Connor is a fictional character created by Joss Whedon and Tim Minear for the television series Angel. The character is portrayed as an infant by the triplets Connor, Jake, and Trenton Tupen and as a teenager by Vincent Kartheiser. Connor has a recurring role in season 3, becomes a regular in season 4, and has his last television appearance in the series finale as a guest star. He continues his story in the canonical comic book series Angel: After the Fall.

Connor is the son of the title character Angel, who is a vampire. Of vampire descent, Connor's birth is a mystery even to Angel, as vampires typically cannot reproduce, and was born with their abilities, making him superhuman but not a vampire himself and having a human soul like his father, and thus, like him, he struggles with his own dark side and likelihood to become evil, as well as his guilt over his father's demonic alter-ego Angelus along his mother Darla's, who was his father's sire, wicked actions. Introduced in the third season as a newborn, Connor is kidnapped and taken to a hell dimension in an act of revenge against his father. He returns as a battle-hardened, disturbed teenager who has been raised to hate Angel. His consequent violent and estranged relationship with his father and increasing internal conflict make him shift alliances between protagonists and antagonists forms the storyline for his character. Towards the end of season 4, events take their toll on Connor's sanity, and his memories are rewritten to give him a normal life. The next time he appears in season 5, Connor is a well-adjusted person. At the return of his memories, Connor finally reconciles with Angel in the series finale. The comic book series follows Connor accepting his abilities and role of a hero in addition to maintaining a normal life as a college student.

Created to give Angel a paternal bond, the infant Connor was used to develop other characters. After he grows up, he initially becomes a tragic figure and foil for the protagonists before eventually evolving into a protagonist himself. Connor has received attention in academic texts related to family studies and masculinity in fiction. The character proved to be controversial among fans, while critics have given mixed views.

In a seemingly impossible event, vampires Angel and Darla had a child, the end result being Connor, a human-like offspring of vampires and the first of his kind. Connor is introduced in the episode "Lullaby", when Darla sacrifices herself to give birth to him, by staking herself in the heart. Darla's sacrifice for their son allows Angel to make peace with her, and welcomes Connor into his life with hope for their family's future, especially since Angel is prophesied that he eventually become human again and thus one day a normal life as a father. However, Angel is apprehensive of what Connor might become, especially when he notices his son is not just healthy but also much stronger than human infants, which pains him to know that Connor is not normal (thus keeping him from being truly happy with his fatherhood, avoiding the risk of again losing his soul), yet loving him unconditionally. For the first few months of his life, Connor is jointly raised by Angel and his team, including Wesley and Cordelia. Different factions constantly target him. Connor is prophesied to destroy the time-shifting demon lord Sahjhan. In an attempt to negate the prophecy, he travels through time and rewrites the prophecy to read "The father will kill the son" in reference to Angel and Connor, and recruits Angelus's nemesis Daniel Holtz, whose family the vampire killed centuries ago with Darla. Wesley kidnaps the baby in a misguided effort to save his life from Angel, conveniently leading him into the hands of Holtz. Holtz steals the baby and is forced to escape to the hell dimension Quor'Toth: Darkest of the dark world.

Holtz raises Connor as his son and instills him with a deep hatred of Angel, although revealed later that he also occasionally abuses Connor when training him out of his hatred towards Connor's parents. As time runs more quickly in Quor'Toth, Connor ages at an accelerated rate in relation to time on Earth. Surviving the hell, a teenage Connor returns with the goal of avenging the Holtz family by killing Angel. After failing in his first attempt on Angel's life, Connor tentatively begins to reconcile with him. Fearful of the development, Holtz has himself killed by Justine Cooper in a manner that frames Angel for the action. In the finale "Tomorrow", an enraged Connor seals Angel in a metal box and sinks him to the bottom of the ocean.

The opening episode "Deep Down" picks up three months after last season. Angel returns, and Holtz' deception is revealed. Relations are shaky as Angel kicks Connor out of the house in punishment for sinking him, but secretly keeps a protective eye on him from afar. Stricken by the betrayal of his adoptive father and the apparent abandonment by his real one, Connor seeks solace in Cordelia's arms. When an all-powerful demon lord The Beast rises from the ground at the place he was born, Connor feels responsible. As The Beast causes fire to rain from the sky in an apparent apocalypse, Cordelia sleeps with Connor to give him some happiness before the end. While an apocalypse does not occur, Angel (also in love with Cordelia) doesn't take kindly to the development, causing another rift between him and Connor. Unbeknownst to all, Cordelia is possessed to be with Connor by a cosmic entity, Jasmine, looking to give herself birth in this world through their union. As Cordelia becomes pregnant and manipulates Connor into helping her sacrifice an innocent girl for their child, his inhuman actions begin conflicting with his inner good, accelerating his already deteriorating mental health.

Jasmine arrives as a grown woman and immediately bewitches everyone to bask in immense joy and do her bidding. Connor is the only one left in misery because of sharing a blood link with her, which results in his further isolation. As Jasmine enacts her plans for world domination, Angel and his team break free from her spell. Caught between his father and daughter, Connor initially supports Jasmine against Angel, but this conflict, combined with the belief that neither truly cares about him, eventually makes him completely snap. Connor kills Jasmine after Angel manages to break her hold over the city but fails to kill her. An emotional wreck and attempting suicide, Connor wires himself, a comatose Cordelia, and shop full of innocent people to explosives. The season finale ("Home") shows Angel desperate to save his son. Angel agrees to take over Wolfram & Hart in exchange for Connor's life. As per the agreement, Connor is to have a whole new existence as an ordinary boy who is raised in a happy family. Other than Angel, everyone's memories are rewritten to accommodate this new reality.

A few months after the events of season 4, episode "Origin" shows Connor as the son of Laurence and Colleen Reilly. Connor crosses paths with Angel when the demon warlock Cyvus Vail draws him out to make him fulfill his destiny of killing Sahjhan. Angel informs Connor of his special abilities and helps prepare him for the fight, but he does not reveal that he is Connor's real father. As the duel with Sahjhan begins, Connor is outmatched due to having forgotten his formidable fighting skills. Meanwhile, Wesley discovers Angel's deception of altering reality. Distrusting Angel, Wesley shatters the Orlon Window, which restores Connor's, Wesley's, and Illyria's memories. Remembering his old self and discovering that Sahjhan is directly responsible for all the pain he has endured, Connor slips to his original persona of 'demon-killer' and dispatches Sahjhan with ease.