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Jack Gleeson
Jack Gleeson
Jack Gleeson
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Jack Gleeson (born 20 May 1992) is an Irish actor. He is best known for portraying Joffrey Baratheon in the HBO television series Game of Thrones (2011–2014). Following this role, Gleeson took a six-year hiatus from screen acting. He returned to the screen in 2020 and has since appeared in the Irish film In the Land of Saints and Sinners (2023) and the series The Sandman (2025) and House of Guinness (2025).

Key Information

Early life and education

[edit]

Gleeson was born in Cork, Ireland, and raised in Ranelagh, Dublin, where he attended Gonzaga College. Both of his parents are lawyers. He has two older sisters, Rachel and Emma, who are also involved in Irish theatre.[1] He attended drama classes with them when he was young, and also performed in youth theatre.[2][3]

Gleeson attended Trinity College Dublin between 2010 and 2015.[4] He studied philosophy and theology and was elected a scholar in 2012.[5][6] At Trinity, Gleeson was a member of DU Players, where he met his future co-founders of Collapsing Horse Theatre Company.[1]

Career

[edit]

Gleeson began acting at the age of eight in the Independent Theatre Workshop.[3][7] His first roles were in films such as Reign of Fire (2002), Batman Begins (2005), Shrooms (2007), and A Shine of Rainbows (2009). In 2010, he played a leading role in the film All Good Children, which was selected for the Directors' Fortnight at the Cannes Film Festival.[8] A reviewer for Variety considered Gleeson "the pic's big discovery".[9]

In 2011, Gleeson starred as Joffrey Baratheon in the HBO fantasy drama Game of Thrones.[10] His performance received critical acclaim, and his character is widely regarded as one of television's best villains.[11] In 2012, Gleeson expressed his intention to step back from professional acting to pursue an academic career once his work on the series was finished.[6] He retired from screen acting in 2014 after concluding his work on Game of Thrones, but stated that while he had previously been interested in pursuing academia, he had since "gone off that idea".[12] TVLine named Gleeson "Performer of the Week" for his work in the episode "The Lion and the Rose".[13]

Throughout the 2010s, Gleeson was a member of the Dublin-based Collapsing Horse Theatre Company, of which he was a co-founder and producer.[14] He was in the original cast of the company's first production, Monster/Clock, a puppet show that premiered in Dublin in 2012.[15][16] His next appearance was in "lo-fi comedy", Bears in Space, which premiered in Dublin in July 2014 and was part of the 2014 Edinburgh Festival Fringe.[17] The show received positive reviews and was revived in Dublin and London in 2015, as well as Off-Broadway in New York in September 2016.[18][19] In 2017, Collapsing Horse was appointed artistic director of the Cat Laughs comedy festival; Gleeson gave a four-hour performance "as a cat from the 9th-century absurdist poem".[20] Collapsing Horse came to an end in November 2019.[21]

Gleeson made two public appearances in 2019. In June, he was featured in the musical comedy program AMUSICAL at the Cat Laughs festival.[22][23] Then, in August, he made a surprise appearance at Trinity Brawl 2, a wrestling event in Dublin.[24]

Gleeson returned to the screen in Sara Pascoe's 2020 series Out of Her Mind.[25][26] In 2023, he appeared alongside Liam Neeson in the film In the Land of Saints and Sinners,[27] and guest-starred in season four of Sex Education and in the BBC adaptation of The Famous Five novels.[28][29] In 2025, Gleeson reunited with fellow Game of Thrones alum Alfie Allen in the Dutch–Belgian thriller Safe Harbor.[30] He also appeared as Puck / Robin Goodfellow in the second season of the Netflix series The Sandman and as Byron Hedges in the historical drama House of Guinness, which is loosely based on the history of the Guinness family.[31][32]

Personal life

[edit]

Gleeson divides his time between London, where he moved in 2015, and Dublin.[33] On 27 August 2022, he married his long-time girlfriend Róisín O'Mahony in a small Catholic ceremony in County Kerry.[34]

Gleeson publicly supported the successful campaign to legalise abortion in Ireland in 2018.[35]

Acting credits

[edit]

Film

[edit]
Year Title Role Notes Ref.
2002 Reign of Fire Kid Uncredited [36]
2003 Fishtale Boy with fish Short film [37]
2004 Tom Waits Made Me Cry Young Vincent [38]
Shaving the Baby [39]
2005 Batman Begins Little Boy [40]
2007 Shrooms Lonely Twin [36]
2008 We Are Munster Short film [41]
2009 A Shine of Rainbows Seamus [42]
2010 All Good Children Dara [43]
2012 Chat Adam Short film [44]
Electric Burma Himself Documentary [45]
2014 Ringsend Short film [46]
2021 Rebecca's Boyfriend Rory [47]
2023 In the Land of Saints and Sinners Kevin Lynch [48]
2025 With Compliments from the Gentlemen Across the Bar in Oman Himself Short film [49]
Learners Charlie Voice, short film [50]

Television

[edit]
Year Title Role Notes Ref.
2011–2014 Game of Thrones Joffrey Baratheon Main role (seasons 1–4) [51]
2020 Out of Her Mind Casper 2 episodes [52]
2023 Sex Education Dodgy Mo 2 episodes (season 4) [53]
2023–2024 The Famous Five Thomas Wentworth 3 episodes [54]
2025 Safe Harbor Farrell Walsh Main role [55]
The Sandman Puck / Robin Goodfellow 5 episodes (season 2) [56]
House of Guinness Byron Hedges 6 episodes [57]

Theatre

[edit]
Year Title Role Venue Notes Ref.
2002 A Christmas Carol Tiny Tim Gate Theatre [58]
2007 Great Expectations Young Pip [59]
DNA Riverbank Arts Centre [60]
2009 The Giant Blue Hand Timmy Time The Ark [61]
2011 Spurt Various Cork Midsummer Festival [62]
2012 Monster/Clock Toby Smock Alley Theatre Also associate producer [15]
2013 Distance from the Event — Dublin Fringe Festival Associate producer [63]
Human Child — Smock Alley Theatre Co-producer [64]
2014–2016 Bears in Space Nico/Skin Project Arts Centre [17]
Edinburgh Festival Fringe
Smock Alley Theatre
Soho Theatre
59E59 Theaters
2017 The Water Orchard — Project Arts Centre Dramaturg [65]
2018 Collapsing Horse Science Fiction Radio Hour Performer Set Theatre Episodes: "Yokespiracy" & "The Irrational Number" [66]
The Sugar Club
2020–2022 To Be a Machine (Version 1.0) Mark O'Connell Dublin Theatre Festival [67]
Némo Bienniale Internationale
Hong Kong Arts Festival
2021 The Seagull Constantine Galway International Arts Festival [68]
2023 To Be a Machine (Version 2.0) Mark O'Connell Dublin Theatre Festival [69]

Accolades

[edit]
Award Year Category Nominee / Work Result Ref.
1st Irish Theatre Festival 2016 Special Jury Prize Bears in Space Won[a] [70]
IGN Awards 2011 Best TV Villain Game of Thrones Nominated [71]
2012 Best TV Villain Nominated [72]
2013 Best TV Villain Nominated [73]
IGN People's Choice Awards 2012 Best TV Villain Won [72]
2013 Best TV Villain Won [73]
Portal Awards 2012 Best Young Actor Nominated [74]
Russian National Movie Awards 2015 Best Foreign Villain of the Year Nominated [75]
Saturn Awards 2013 Best Performance by a Younger Actor in a Television Series Nominated [76]
Scream Awards 2011 Best Ensemble Nominated [77]
Screen Actors Guild Awards 2011 Outstanding Performance by an Ensemble in a Drama Series Nominated [78]
2013 Nominated [79]
Young Hollywood Awards 2014 We Love to Hate You Nominated [80]

Notes

[edit]

References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Jack Gleeson

View on Grokipedia
from Grokipedia
Jack Gleeson (born 20 May 1992) is an Irish actor renowned for his portrayal of the tyrannical King in the series from 2011 to 2014. Born in Cork, , Gleeson began his at the age of eight, appearing in films such as (2005) before achieving breakout success with , where his depiction of the sadistic character earned widespread acclaim for its intensity despite the role's villainy. Following the conclusion of his tenure on the series, Gleeson largely withdrew from screen in 2014, citing a diminished personal enjoyment in the profession after years of early immersion, rather than backlash against his character, and instead pursued academic studies at and stage performances. He made a notable return to television in 2025, starring as Byron Hedges in the miniseries House of Guinness and appearing as Puck in season 2 of The Sandman, marking his first major onscreen roles in over a decade.

Early life and education

Childhood and family

Jack Gleeson was born on 20 May 1992 in Cork, . He grew up in a family without connections to the entertainment industry, alongside two older sisters, and Emma. Gleeson's parents encouraged participation in extracurricular activities, enrolling him and his sisters in drama classes from a young age as a means to channel their energy. This early involvement fostered his interest in within a conventional Irish family setting, emphasizing routine childhood experiences over professional ambitions.

Formal education and academic pursuits

Gleeson attended Gonzaga College, a Jesuit secondary school in Dublin, from 2004 to 2010, during which he began participating in youth theater productions while maintaining his academic commitments. In 2010, he enrolled at Trinity College Dublin to pursue a two-subject moderatorship in philosophy and theology, continuing his studies amid rising demands from his acting career on Game of Thrones. In April 2012, as a second-year student, Gleeson was elected one of 103 Scholars by the college, an honor awarded for demonstrated exceptional proficiency in his subjects, joining a record number of recipients that year. Gleeson graduated from in with a degree encompassing philosophy, theology, and world religions, having balanced coursework with filming schedules that often required travel abroad. His academic focus on philosophical inquiry provided a counterpoint to the public scrutiny of his on-screen , aligning with his expressed interest in exploring questions of ethics and existence independently of professional acting.

Acting career

Early roles and child acting

Gleeson began acting at the age of eight through the Independent Theatre Workshop in Cork, , initially focusing on stage performances before transitioning to screen work. His screen debut occurred in 2002 at age ten, with an uncredited role as a small boy in the post-apocalyptic film Reign of Fire, directed by Rob Bowman and starring and . In 2005, Gleeson appeared as a little boy in a brief scene set in the Narrows during Batman Begins, Christopher Nolan's origin story for the DC Comics character, marking one of his earliest credited film roles at age thirteen. He followed this with the role of Blane, a supporting character in the horror film Shrooms (2007), filmed in Ireland and involving a group of American students encountering supernatural events in a forest. By 2009, at age seventeen, Gleeson took on another minor role in the Irish crime comedy Perrier's Bounty, directed by Ian Fitzgibbon, which featured a cast including Cillian Murphy and Jim Broadbent. These roles, primarily supporting or background parts in international and local productions, allowed Gleeson to gain practical experience in film sets while still a child and adolescent, without earning significant awards or widespread recognition at the time.

Breakthrough as Joffrey Baratheon

Jack Gleeson was cast as , the sadistic heir to the Iron Throne, for HBO's fantasy series in 2011. The character, drawn from George R.R. Martin's A Song of Ice and Fire novels, served as a primary whose cruelty drove key conflicts in the . Gleeson, then 18 years old, portrayed Joffrey across 27 episodes spanning the first four seasons, from the series premiere on April 17, 2011, to the character's poisoning death during the Purple Wedding in season 4, episode 2, aired on , 2014. The role demanded sustained immersion in a relentlessly villainous persona, requiring Gleeson to deliver unlikable traits without redemption to maintain narrative tension. Filming primarily occurred in , where principal photography for early seasons involved extended shoots at locations like the and , amid grueling schedules that intensified during the show's rising popularity. Gleeson has described the audition process as involving scene readings that emphasized Joffrey's petulance and volatility, challenges compounded by the need to evoke visceral audience revulsion without personal identification. Gleeson's depiction amplified Joffrey's book-rooted antagonism, contributing to the character's status as television's most reviled figure and bolstering the series' engagement through polarizing villainy. His performance earned a 2013 Saturn Award nomination for Best Performance by a Younger Actor in a Television Series, recognizing the portrayal's impact on the ensemble-driven drama. The role's intensity, marked by scenes of arbitrary brutality, underscored Gleeson's ability to embody unmitigated malice, aiding Game of Thrones' ascent to cultural phenomenon with viewership peaking at over 10 million U.S. households by season 4.

Retirement from screen acting

Following the airing of the fourth season of in 2014, in which his character met his demise, Jack Gleeson announced his retirement from screen . He had begun at age eight primarily for recreational enjoyment but found that professional demands altered his relationship with the craft. In a contemporaneous , Gleeson stated, "I've been since age 8. I just stopped enjoying it as much as I used to... When you make a living from something, it changes your relationship with it. It's not like I hate it, it's just not what I want to do." He described screen work on the series as having become "just a job," prioritizing learning lines and fulfilling obligations over intrinsic passion. Gleeson's decision aligned with his academic interests, as he was then a student at and planned to pursue postgraduate studies, potentially including a master's or PhD, to engage deeply in philosophical inquiry. This shift allowed full-time dedication to intellectual pursuits rather than sustaining a career in screen performance, reflecting a deliberate reevaluation of priorities after early professional success. The resulting hiatus from screen roles spanned six to seven years, during which he avoided scripted television and film projects. Persistent narratives attributing Gleeson's retirement to fan hatred or typecasting fears lack substantiation from his own accounts. He has explicitly debunked such claims, noting that while some viewers conflate with villainous roles, he experienced no abuse: "Thankfully, it wasn’t because I received any sort of abuse from anybody... People confuse the character with the ." Gleeson described fan encounters as generally positive, countering assumptions of external pressures overriding personal choice in his withdrawal from screen work.

Theater work during hiatus

During his screen acting hiatus following the conclusion of Game of Thrones in 2014, Gleeson returned to the stage with the Dublin-based theater company Collapsing Horse, focusing on experimental and collaborative productions that emphasized puppetry and surreal comedy. He starred in Bears in Space, a hour-long show featuring live actors manipulating bear puppets in a narrative about cosmonaut bears evading interstellar villains, which premiered at Dublin's Project Arts Centre in 2014 and toured through 2016. The production achieved sold-out runs at the Edinburgh Festival Fringe and London's Soho Theatre before transferring to New York's 59E59 Theaters as part of Origin's 1st Irish Festival, where it received praise for its "endearingly shaggy" whimsy and inventive staging. Gleeson's involvement in Bears in Space—co-written and co-produced by the company—highlighted his preference for intimate, artist-led projects over large-scale commercial theater, with no evidence of major international tours or extended West End/Broadway commitments. This engagement, alongside his concurrent philosophy studies at , served to sustain his performance skills in a controlled, non-screen format amid a deliberate step back from fame-driven roles. In 2017, Gleeson contributed to Collapsing Horse's The Water Orchard at Project Arts Centre as dramaturg, aiding the development of its kaleidoscopic, genre-bending comedy about societal change, though he did not perform on stage. He also appeared as a performer in select episodes of the company's Science Fiction Radio Hour series at Dublin's Set Theatre, including "Yokespiracy" and "The Shape of Flarp to Come," further demonstrating selective participation in niche, Irish-rooted ensemble work. These limited credits underscore a pattern of theater as a craft-maintenance outlet rather than a career pivot, aligned with his low-profile ethos during this period.

Return to screen roles

Gleeson's first screen role following his hiatus from acting was as Casper Lawlor in the miniseries Out of Her Mind, which aired in 2020. The six-episode comedy series, created by and starring , depicted Gleeson in a supporting role as a university acquaintance of the . In 2023, Gleeson appeared as Kevin in the Irish action In the Land of Saints and Sinners, directed by and starring as a former assassin confronting his past in 1970s Donegal. The film premiered at the on September 10, 2023, and received a in the United States on October 6, 2023. That same year, he portrayed the antagonist Wentworth in the adaptation of Blyton's The Famous Five, a three-part series directed by that aired starting December 24, 2023. These roles marked a departure from his earlier , featuring characters in more grounded, period-specific contexts. By 2025, Gleeson had taken on several high-profile projects, including the role of Puck in season 2 of Netflix's The Sandman, adapting Neil Gaiman's comic series, with production images released in June 2025. He also stars as Byron Hedges in the Netflix period drama House of the Guinness, a Steven Knight-created series set in 19th-century Dublin focusing on the Guinness family's rise, which premiered on September 25, 2025. Additionally, Gleeson appears as Farrell Walsh in the eight-episode crime drama Safe Harbor, centered on young hackers in 1990s Dublin, slated for release in 2025. In interviews promoting House of the Guinness, Gleeson explained his selective return to screen work, stating he had stepped away earlier because he "stopped enjoying it as much as I used to" but later "got back into it" on terms allowing greater personal balance. He emphasized choosing projects that align with his interests rather than pursuing constant visibility, reflecting a matured approach evidenced by his varied, less villainous characterizations and altered physical appearance, including that distinguishes him from prior roles.

Reception and legacy

Critical reception of performances

Gleeson's breakthrough role as Joffrey Baratheon in Game of Thrones (2011–2014) garnered widespread critical acclaim for his ability to portray the character's sadistic cruelty with layers of petulance and vulnerability, making the villain both detestable and psychologically believable. Reviewers highlighted his command of subtle physical tics and vocal inflections that amplified Joffrey's unhinged entitlement without descending into caricature. For this performance, he received a nomination for the Irish Film and Television Academy's Rising Star Award in 2013. In his early career, Gleeson's minor role as a young boy in (2005) drew positive notices for his natural, unforced delivery in a pivotal scene interacting with the protagonist, showcasing poise beyond his years despite the brevity of the part. Following his screen hiatus, Gleeson's return in roles such as in In the Land of Saints and Sinners (2023) was received favorably for grounding the antagonist in restrained menace amid the film's thriller elements. Subsequent appearances, including Puck in The Sandman (2022), earned praise for demonstrating emotional range and versatility, allowing deeper exploration of whimsy and compared to his prior villainous turns. Critics noted his sustained captivation in limited across these projects, affirming adaptability without reliance on . Overall, Gleeson's output, though selective, has avoided significant critical misfires, with reviewers crediting his deliberate pacing for preserving intensity and nuance.

Public perception and debunked myths

Public perception of Gleeson has long distinguished the actor from his most famous character, with fans and colleagues praising his ability to evoke intense disdain for while encountering no widespread hostility in person. In a September 2025 interview, Gleeson emphasized that interactions with viewers were "thankfully" positive, countering assumptions that the role's villainy spilled over into real-life treatment. A persistent myth holds that Gleeson retired from screen acting due to fan backlash or abuse stemming from Joffrey's unpopularity, but he has repeatedly debunked this claim with direct evidence from his experiences. In the same 2025 discussion with The Hook, Gleeson clarified that he faced no such negativity, attributing his hiatus instead to a desire to explore theater, academics, and personal interests after forming a theater company with friends. This narrative, amplified online despite lacking substantiation, overlooks his continued stage work and voluntary return to varied roles without reported incidents of harassment. Perceptions of Gleeson as typecast in villainous parts have been challenged by his 2025 screen comeback, where audiences noted his "unrecognizable" appearances in projects like The Sandman and House of Guinness, featuring altered hairstyles and builds that diverged sharply from Joffrey's image. These transformations, combined with roles in fantasy and period drama, demonstrate his range beyond antagonism, shifting focus from to appreciation for his versatility. In a 2015 interview, Gleeson offered an analytical perspective on Game of Thrones' depictions of and violence toward women, describing them as potentially "unfair or unjust" to represent in such detail, though he clarified the show did not implicitly condone them. This view, expressed as a non-viewer reflecting on his own scenes' challenges, represented a thoughtful critique rather than a call for cancellation, aligning with his broader interest in ethical storytelling without alienating his professional ties.

Impact on acting career choices

Gleeson's decision to step away from screen following the conclusion of his role in Game of Thrones in 2014 represented a deliberate pivot toward personal fulfillment, driven by a waning enjoyment of the profession rather than external pressures such as fan backlash, which he explicitly debunked in a 2025 interview. This hiatus facilitated deeper academic engagement, including studies in and at , where he was elected a in 2012, allowing him to prioritize intellectual pursuits over the relentless demands of fame. In contrast to contemporaries who pursued continuous exposure amid rising stardom, Gleeson's choice reflected a causal commitment to , viewing sustained as dehumanizing and superficially driven by rather than intrinsic value. This period of withdrawal enabled a recalibration of his professional motivations, culminating in a selective return to by the early , informed by restored personal satisfaction rather than market imperatives. By channeling energy into theater and academics during the break—including co-founding a theater company—Gleeson cultivated a framework for evaluating roles based on artistic merit and work-life balance, eschewing the "Hollywood grind" that often correlates with burnout among peers. His trajectory underscores a prioritizing long-term and selective engagement, evidenced by limited but purposeful screen appearances post-2014 that avoided or overexposure. As of 2025, Gleeson's sustained relevance without perpetual industry immersion positions him as a to fame-chasing norms, maintaining career viability through disciplined restraint and intellectual depth. This approach yields ongoing opportunities while preserving privacy and fulfillment, signaling no intent for full recommitment to high-volume production, but rather a model of causal realism in balancing vocation with life priorities.

Personal life

Privacy and relationships

Gleeson has consistently maintained a low public profile regarding his personal affairs, avoiding social media accounts and rarely discussing off-screen matters in interviews. He resides in Dublin, Ireland, prioritizing seclusion from celebrity culture following the intense fame from his role in Game of Thrones. In a notable exception to his privacy, Gleeson participated in humanitarian efforts by visiting Haiti in November 2013 with the Irish aid agency GOAL, touring projects in Port-au-Prince aimed at supporting communities affected by the 2010 earthquake. Gleeson married actress and comedian Róisín O'Mahony, his long-time partner, on August 27, 2022, in a small ceremony at Sacred Heart Church in Ballinskelligs, County Kerry, Ireland. No public records indicate children or prior marriages. The couple's relationship has remained largely out of the spotlight, aligning with Gleeson's expressed aversion to the intrusions of fame.

Interests beyond acting

Gleeson has pursued extensive studies in and , expressing a desire to in the field and potentially pursue advanced degrees, including a master's in ancient Hebrew and a PhD. His philosophical interests extend to , with admiration for thinkers like , which have informed a critical emphasizing empirical on personal fulfillment over external rewards such as financial success. This engagement has fostered a pronounced toward , which Gleeson has publicly critiqued as superficial and akin to "religious hysteria," arguing it fills minds with inconsequential thoughts about fame at the expense of substantive pursuits. In a 2014 speech, he described societal obsession with celebrities as vapid, drawing from philosophical disdain for unexamined adulation to prioritize intrinsic motivations like intellectual passion. Beyond academia, Gleeson co-founded the Collapsing Horse Theatre Company in Dublin around 2015 with Trinity College classmates Aaron Heffernan, Eoghan Quinn, and Dan Colley, focusing on innovative productions such as the puppet comedy Bears in Space, which he helped produce and which toured to London and New York. This endeavor reflects a hands-on commitment to creative writing and production in theater, prioritizing collaborative, low-stakes artistic experimentation over commercial opportunities. Gleeson has also engaged in humanitarian initiatives, visiting Haiti in November 2013 with the Irish aid organization GOAL to inspect projects aiding vulnerable populations post-earthquake, motivated by a family connection to early medical responders there. In February 2023, he traveled to Kyiv, Ukraine, delivering a pickup truck for military use, auctioning a Joffrey Baratheon figurine to fund the 5th Separate Assault Regiment, and participating in workshops to raise additional support for defenders amid the ongoing conflict. These efforts underscore a pattern of leveraging visibility for tangible aid, grounded in direct assessment of needs rather than performative gestures.

Filmography

Film roles

Gleeson's film debut occurred in the 2002 fantasy action film Reign of Fire, directed by Rob Bowman, in which he appeared uncredited as a young survivor in a crowd scene featuring Irish child actors. His first credited role followed in Christopher Nolan's Batman Begins (2005), where he portrayed a little boy interacting with the young Bruce Wayne during a flashback sequence set in Gotham. In 2007, Gleeson appeared in the Irish-American horror film Shrooms, directed by Paddy Breathnach, playing the character known as the Lonely Twin in a story centered on hallucinogenic mushrooms and supernatural events in an Irish forest. He next starred as Seamus, an emotionally withdrawn orphan, in the Irish drama A Shine of Rainbows (2009), directed by Vic Sarin, which explores themes of foster care and family bonds on the Aran Islands. Gleeson took a leading role as Dara, a grieving Irish boy relocated to rural France after his mother's death, in the 2010 Irish independent drama All Good Children, directed by Alicia Duffy in her feature debut; the film, a co-production involving Irish and French elements, follows the protagonist's cultural adjustment and budding romance. After a hiatus from screen , Gleeson returned in the 2023 Irish action thriller In the Land of Saints and Sinners, directed by , portraying Kevin, a young IRA operative and antagonist opposing the protagonist played by in a 1970s Donegal setting. This , a co-production emphasizing Irish locations and talent, marked his re-entry into feature films following theater work.

Television roles

Gleeson portrayed the tyrannical King Joffrey Baratheon in HBO's Game of Thrones, appearing in 27 episodes from the series premiere on April 17, 2011, through season 4, episode 2 ("The Lion and the Rose"), aired on April 13, 2014, where his character met his demise. Following a self-imposed hiatus from screen acting after Game of Thrones, Gleeson resumed television work with a guest role in the third season of Netflix's Sex Education, appearing as Larry in the episode "Chapter 3: Episode 3," released September 17, 2021. He then starred as Casper, the quirky boyfriend of the protagonist, in all six episodes of BBC Two's comedy series Out of Her Mind, which aired from February 5 to March 11, 2020. In 2023, Gleeson played the antagonist Thomas Wentworth in the BBC adaptation of The Famous Five, appearing in the episode "Five Go to the Demon's Rocks," which premiered on December 24, 2023. Gleeson's 2025 roles include the faerie Puck (also known as Robin Goodfellow) in five episodes of Netflix's The Sandman season 2, released in two parts on July 3 and July 24, 2025. He also portrayed Byron Hedges, a distant cousin entangled in the dynamics, across all six episodes of Netflix's House of the Guinness, which debuted on September 26, 2025. Additionally, he is set to appear in the upcoming series Safe Harbor in 2025.

Theatre roles

Gleeson began performing in theatre at age eight through the Independent Theatre Workshop in Dublin, where he received early training in stagecraft alongside film auditions. In 2012, following the conclusion of his major screen commitments, he co-founded the Dublin-based Collapsing Horse Theatre Company with university peers, focusing on original, puppetry-infused works for diverse audiences including children and experimental crowds. His first credited role with Collapsing Horse was Toby, a humanoid monster and apprentice clockmaker, in the company's debut production Monster/Clock, a steampunk puppet play exploring themes of time and otherness, which premiered at Smock Alley Theatre in March 2012 for a limited run of several weeks. Gleeson also contributed as associate producer, handling aspects of the intimate production that blended live action, music, and handmade puppets for capacities under 100. The company’s subsequent output included Bears in Space (2015), a surreal science-fiction adventure that Gleeson helped develop and in which he performed during its Dublin origins before international transfers to New York’s New Ohio Theatre in September 2016 and London’s Soho Theatre in August 2015, emphasizing low-fi effects and ensemble physicality over large-scale spectacle. In 2020, amid pandemic adaptations, he took the lead role in To Be a Machine (Version 1.0) at the Dublin Theatre Festival, portraying a TED-style lecturer on transhumanism in a solo-format piece constrained by social distancing protocols at the Project Arts Centre. These engagements, primarily in Ireland with select tours, highlight Gleeson's preference for collaborative, venue-scale theatre over commercial West End or Broadway pursuits.

References

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  32. https://www.nytimes.com/2016/09/12/theater/bears-in-space-review-jack-gleeson.html
  33. https://www.59e59.org/shows/show-detail/bears-in-space/
  34. https://playbill.com/article/jack-gleesons-surreal-bears-in-space-transfers-to-londons-soho-theatre-today-com-355538
  35. https://ew.com/article/2016/08/09/games-thrones-jack-gleeson-play-us/
  36. https://nomoreworkhorse.com/2017/07/21/the-water-orchard-project-arts-centre-review/
  37. https://www.dancolley.com/theatre/thewaterorchard
  38. https://www.imdb.com/title/tt15782690/
  39. https://www.rottentomatoes.com/m/in_the_land_of_saints_and_sinners
  40. https://www.theguardian.com/tv-and-radio/2023/jul/26/jack-gleeson-game-of-thrones-return-screens-famous-five-bbc
  41. https://www.bbc.com/mediacentre/2023/the-famous-five-cast-with-first-look-images
  42. https://www.radiotimes.com/tv/drama/house-of-guinness-cast/
  43. https://www.imdb.com/title/tt30221618/
  44. https://hbowatch.com/story/jack-gleeson-from-batman-begins-child-actor-to-gots-joffrey/
  45. https://www.hotpress.com/music/ifta-announce-irish-film-board-rising-star-nominations-2013-9519123
  46. https://www.theguardian.com/film/2024/apr/25/in-the-land-of-saints-and-sinners-review-liam-neeson-kerry-condon
  47. https://www.tvfanatic.com/jack-gleesons-best-performance-wasnt-on-game-of-thrones-but-in-the-sandman/
  48. https://ew.com/tv/game-of-thrones-joffrey-jack-gleeson-no-negative-fan-experiences/
  49. https://www.yahoo.com/entertainment/tv/articles/game-thrones-actor-jack-gleeson-174208506.html
  50. https://7news.com.au/entertainment/game-of-thrones-star-jack-gleeson-unrecognisable-as-he-sets-the-record-straight-on-why-he-really-retired-from-acting--c-20147012
  51. https://screenrant.com/the-sandman-season-2-jack-gleeson-game-of-thrones-villain/
  52. https://www.salon.com/2015/07/28/game_of_thrones_joffrey_says_he_doesnt_watch_the_show_criticizes_unjust_misogyny/
  53. https://time.com/3977050/game-of-thrones-joffrey-misogyny-male-nudity/
  54. https://creators.yahoo.com/lifestyle/story/jack-gleeson-king-joffrey-reveals-real-reason-he-quit-acting---i-just-stopped-enjoying-it-as-much-as-i-used-to-193553040.html
  55. https://dailynous.com/2018/09/25/joffrey-baratheon-become-philosophy-professor/
  56. https://www.goalcast.com/why-jack-gleeson-game-of-thrones-actor-king-joffrey-actor-disappeared/
  57. https://www.upworthy.com/an-actor-who-got-super-famous-overnight-has-some-profound-thoughts-on-celebrity-worship
  58. https://www.eonline.com/news/500333/game-of-thrones-jack-gleeson-slams-superficial-celebrity-culture-watch
  59. https://www.unilad.com/film-and-tv/jack-gleeson-working-on-game-of-thrones-lost-passion-434673-20230220
  60. https://www.dailymail.co.uk/tvshowbiz/article-11164453/Game-Thrones-Jack-Gleeson-marries-girlfriend-Roisin-OMahony-dignified-ceremony-Ireland.html
  61. https://www.bbc.com/news/uk-24849274
  62. https://www.thejournal.ie/jack-gleeson-game-of-thrones-goal-1159391-Nov2013/
  63. https://people.com/tv/game-of-thrones-star-jack-gleeson-weds-roisin-omahony/
  64. https://www.goalcast.com/king-joffrey-actor-jack-gleason-small-irish-wedding/
  65. https://www.whosdatedwho.com/dating/jack-gleeson
  66. https://www.hellomagazine.com/film/857985/house-of-guinness-cast-love-lives-off-screen/
  67. https://www.vanityfair.com/hollywood/2013/11/game-of-thrones-king-joffrey-quit-acting
  68. https://her.ie/life/game-of-thrones-jack-gleeson-slams-superficial-celebrity-culture-in-oxford-speech-94273
  69. https://www.vulture.com/2015/07/jack-gleeson-theatre-company-bears-in-space.html
  70. https://www.standard.co.uk/showbiz/celebrity-news/game-of-thrones-jack-gleeson-i-turned-down-hollywood-to-run-theatre-company-10401539.html
  71. https://playbill.com/article/game-of-thrones-star-turns-down-film-offers-to-run-a-theatre-com-353567
  72. https://www.weareukraine.info/game-of-thrones-actor-jack-gleeson-visits-ukraine-and-delivers-a-pickup-truck-for-ukrainian-army/
  73. https://good-time-invest.com/blog/jack-gleason-came-to-ukraine/
  74. https://www.tvguide.com/celebrities/jack-gleeson/credits/3000313785/
  75. https://irishplayography.com/company/collapsing-horse-theatre
  76. https://www.dancolley.com/theatre/monsterclock
  77. https://irishplayography.com/play/monster-clock
  78. https://www.youtube.com/watch?v=YEBQE8C2Ids
  79. https://www.theguardian.com/stage/2020/oct/09/dublin-theatre-festival-review-citys-players-adapt-to-age-of-covid
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