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Gackpoid
DeveloperInternet Co., Ltd.
Initial releaseJuly 31, 2008
Stable release
Gackpoid V4 / April 30, 2015
Operating systemWindows, OS X 10.8 or better
Available inJapanese
TypeVocal Synthesizer Application
WebsiteVOCALOID4 がくっぽいど

Gackpoid (がくっぽいど, Gakuppoido), is a software product developed by Internet Co., Ltd. for the Vocaloid software. Gackpoid's voice is sampled from Japanese singer and actor Gackt. The mascot of the software is named Camui Gackpo (神威 がくぽ, Kamui Gakupo), after Gackt's alias name. Gackpo's names are sometimes spelt as Kamui and Gakupo.

Development

[edit]

Gackpoid was developed by Internet Co., Ltd. using Yamaha Corporation's Vocaloid 2 synthesizer software as their first venture into the voice synthesizer industry.[1] The initial version was released on July 31, 2008. The name "Gackpoid", meaning "Gackt-like Vocaloid", was chosen by Gackt himself during the voice recording process.[2] Camui Gackpo, the software's mascot, was designed by manga artist Kentaro Miura (notable for manga Berserk) and chosen by Internet Co. from a pool of several competing designs.[1][3]

His vocals were one of the Vocaloid 2 male vocals, which were used in the creation of VY2.[4]

Additional software

[edit]

V3 Gackpoid, an update to the original Gackpoid using the Vocaloid 3 synthesizer software, was released on July 13, 2012.[5] It was released as a package with three different vocal tones: Native (the basic voice), Power, and Whisper.[5][6]

On July 25, 2013, Internet Co., Ltd. announced that Mac OS X versions of all of their software, including Gackpoid, were in development using the Vocaloid Editor for Cubase NEO software for Macintosh.[7][8] The OS X versions were rolled out as a free download for all registered users in October 2013, though Internet Co. advised users to choose only one version—Mac or Windows—due to only one license being available per user.[9][10]

On December 2, 2014, Noboru Murakami, president of Internet Co., Ltd., stated that an update of Gackpoid from Vocaloid 3 to Vocaloid 4 was forthcoming, but declined to specify release dates or schedules.[11] Gackpoid V4, an update to the voice library using the Vocaloid 4 synthesizer software, was released on April 30, 2015. It added growl samples to each of the three voice banks and contained general improvements to the V3 program.[12]

Both Vocaloid 3 (once imported into the newer engine) and Vocaloid 4 versions of the software have access to the new Vocaloid 4 "Cross-Synthesis" system, though the vocals can only cross with their respective engine versions.

Noboru had expressed hope to one day make a Gackpoid English.[13] He noted, however, English vocals could only occur if they were profitable.[14]

V3 Gackpoid and VY2v3 were also the focus of vol.4 of the Vocaloid-P data series.

Characteristics

[edit]

Gackpo is designed to resemble a samurai clad in a jinbaori, a type of kimono which was used as a battle surcoat along with parts of traditional armor, while carrying a katana.[3]

Name Gackpoid (software)
Kamui Gakupo (mascot)
Release July 31
Suggested Tempo 60-150bpm[6][15]
Suggested Vocal Range A1-C4 (NATIVE, POWER), A1-G3 (WHISPER)[6]

Contest

[edit]

On June 12, 2009, Nico Nico Douga announced a "Gackpoid Contest", in partnership with Dwango and CELL, to encourage song creators to use Gackpoid for the creation of quality, original songs.[16] Gackt had previously hinted at the contest on June 10 during a Nico Nico live broadcast challenge, where he announced that he would not appear in another broadcast until viewers created "spirited" music using the software in an upcoming competition.[17] Competitors were asked to attach a "Gackpoid Contest" tag to their submitted videos to compete in the contest, which accepted submissions until the end of August. Finalist entries would be awarded 100,000 yen (US$1,220) each.[17] Gackt promised viewers that he would choose one or more of the winning songs to cover for eventual recording and release.[18]

On December 15, Nico Nico Douga aired a live broadcast announcing ten finalists for the contest, which would win "Excellence Prizes".[18] The official winning entry was declared to be Episode.0, by mathru/Kanimiso-P, during the "NicoNico Daikaigi 2011 in Taiwan" event, where Gackt announced that Episode.0 and another finalist, natsu-P's Paranoid Doll, had been covered by him and would be released together as his thirty-ninth single.[19] Kanimiso-P was awarded 300,000 yen (US$3,660) and the nine other Excellence Prize winners 100,000 yen.[20] The single was released on July 13, 2011.[21]

See also

[edit]

References

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

Gackpoid

View on Grokipedia
from Grokipedia
Gackpoid, also known by its character name Camui Gackpo, is a Japanese masculine voicebank for Yamaha's vocal synthesis software, developed by Internet Co., Ltd. and featuring voice samples from the singer and actor . Released on July 31, 2008, as the first male voice product for the VOCALOID2 engine, it enables users to create singing vocals by inputting lyrics and melody, replicating Gackt's distinctive for music production and creative applications. The launch of Gackpoid marked a significant expansion in 's offerings, with its product packaging featuring an illustration by manga artist , which drew widespread attention and contributed to its rapid popularity. Within just three days of release, nearly 200 original songs utilizing the voicebank appeared online, highlighting its immediate impact on the digital music community. Subsequent updates adapted Gackpoid for later versions, including enhanced libraries for and that introduced specialized voicebanks such as "Power" for dynamic expressions and "Whisper" for softer tones, alongside features like improved word connection and growl effects. Gackpoid's character design portrays Camui Gackpo as a samurai-inspired figure with long hair, often associated with symbolic items like an and a sword. As a cornerstone of the ecosystem, it has supported broader accessibility through services like the NetVOCALOID for mobile creation on flip phones and remains available as a downloadable library compatible with modern editors, recommended for tempos between 60–150 BPM and vocal ranges of A1–C4 for Native and Power voicebanks or A1–G3 for Whisper.

Introduction

Overview

Gackpoid is a male Japanese voicebank developed for Yamaha's VOCALOID2 singing synthesizer software by Internet Co., Ltd., and was released on July 31, 2008. It serves as a virtual vocalist, allowing users to input melodies and to generate synthesized in Japanese. The software was initially marketed as the first VOCALOID2 voicebank based on a professional singer's voice, aiming to deliver high-quality synthesis that faithfully reproduces the vocal of Japanese artist . This positioned Gackpoid as a pioneering entry in the series, expanding the technology's appeal by incorporating a real-world performer's vocal characteristics for more expressive and authentic outputs. In the broader historical context, Gackpoid emerged as part of Vocaloid's growth following the 2007 launch of , which popularized the platform among music creators and fans. It marked the introduction of the first male voice specifically for the VOCALOID2 engine, facilitating professional-level collaborations and enabling users to produce songs with a distinctive male vocal style suited for rock, pop, and other genres. The voicebank's core purpose is to empower amateur and professional musicians alike to create original compositions featuring a mature, versatile male singing voice.

Naming and Mascot

The name "Gackpoid" derives from a combination of "," the Japanese singer and actor whose voice provided the basis for the software, and elements of "," the vocal synthesis platform, with "Gack" reflecting Gackt's name and "poid" abbreviating "Vocaloid-like." The official character name is Kamui Gakupo (神威がくぽ), which was later stylized by developer Internet Co., Ltd. as Camui Gackpo to align with 's artistic alias. This naming choice, selected during the voice recording process, emphasizes the character's connection to Gackt while integrating it into the ecosystem. The mascot's design was created in 2008 by renowned manga artist , best known for his work on , who contributed the illustrations voluntarily to support the Nico Nico Douga community. Miura's artwork depicts Camui Gackpo with long purple hair styled in a high ponytail, clad in samurai-inspired attire featuring a jinbaori battle surcoat, trousers, and elements of traditional Japanese armor, all unified by a striking purple color scheme that mirrors Gackt's visual persona. The character's sword is stylized as a , with a resembling piano keys and a blade etched with sound wave patterns, blending martial aesthetics with musical themes. The design draws cultural significance from , particularly the Ainu concept of "," a term for god-like spiritual entities possessing supernatural power, which informs the character's name and evokes a mysterious, authoritative presence. Initially realized through Miura's 2D concept sketches and package art, the mascot evolved to include 3D models for immersive applications, such as holographic projections in live concerts like the 2024 "Lively Paradise" event and various merchandise items including figurines and apparel. This progression from static illustrations to dynamic 3D representations has enhanced the character's versatility in performances and fan engagement.

Development History

Origins and Collaboration

Gackpoid's development originated as Co., Ltd.'s inaugural foray into the ecosystem, initiated in collaboration with following the release of the VOCALOID2 engine in 2007. The project was suggested by Co., Ltd., leading Co., Ltd. to approach Gackt. As a music software developer established in 1988, Co. sought to leverage Yamaha's synthesis technology to create a new voicebank, with the company overseeing the voice database assembly and tuning processes while Yamaha supplied the underlying engine. This partnership aligned with the broader expansion of offerings after the platform's growing traction in . The project's core motivation stemmed from a desire to diversify the lineup, which had been dominated by female voices such as since her debut, by introducing the first male voicebank for VOCALOID2 targeted at the Japanese market. By incorporating the voice of prominent singer and actor , Internet Co. aimed to elevate 's appeal from hobbyist users to professional musicians, fostering a bridge between digital synthesis and established standards. This approach was intended to capitalize on the surging popularity of Vocaloid creations online, enhancing the technology's versatility for song production. The initiative was publicly announced in mid-2008, reflecting strategic timing to build anticipation amid the boom, and culminated in the software's full release on July 31, 2008. Through this , Internet Co. positioned Gackpoid as a competitive entry that combined celebrity endorsement with advanced synthesis capabilities, setting the stage for subsequent developments by third-party providers.

Voice Sampling Process

The voice for Gackpoid was provided by Japanese singer and actor Gakuto Oshiro (大城 ガクト, Ōshiro Gakuto), known professionally as Gackt Camui, selected for his distinctive vocal style and established popularity in the J-rock scene. Recording sessions began in December 2007 at a studio in , , managed by developer Internet Co., Ltd. The first session lasted 4 hours with no breaks, followed by a second session in January 2008 to select the best samples. Gackt performed scripted articulations of isolated phonetic elements, including combinations of vowels and consonants (such as "epp" or "pep"), across three distinct pitches to build a versatile sample set. These sessions yielded approximately 3,800 samples that were meticulously captured to reflect natural vocal transitions. Internet Co., Ltd. then processed the raw recordings—trimming and compressing them into a precise database compatible with the VOCALOID2 synthesis engine—for use in generating synthesized singing. Gackt actively participated beyond recording, providing input on the project's direction, including selecting the software's name, "Gackpoid" (meaning "Gackt-like "), during the sessions to align it with his artistic identity.

Software Releases

VOCALOID2 Version

Gackpoid was launched on July 31, 2008, exclusively for Windows systems and compatible with the 2 editor software. Priced at an open rate with an estimated retail of approximately ¥18,900 (tax included), it marked Internet Co., Ltd.'s entry into the market as the first male-voiced library for the engine. The software included a single voicebank derived from samples of Japanese singer Gackt's voice, offering a standard clear tone suitable for versatile singing styles, with growl effects available via parameters for more intense expressions. Limited to Japanese lyrics at launch, it integrated seamlessly with the VOCALOID2 , including tools like Piapro Studio for production. Bundled demo songs, such as covers of Gackt's tracks like "RETURNER ～闇の終焉～" and "島唄," showcased its capabilities right out of the box. Despite its innovative male vocal synthesis, the initial release exhibited limitations, including noticeable breathiness in higher notes that could affect clarity, often necessitating manual tuning and parameter adjustments for optimal performance in complex melodies.

VOCALOID3 and Updates

On July 13, 2012, Internet Co., Ltd. released the VOCALOID3 edition of Gackpoid, featuring three distinct voicebanks derived from the original samples: Native as an enhanced iteration of the V2 voicebank for clearer articulation, Power for a more dynamic and forceful delivery, and Whisper for subtle, breathy expressions suitable for intimate or atmospheric passages. The V3 edition expanded compatibility with the VOCALOID3 engine's advanced synthesis capabilities, enabling smoother transitions between and improved expressiveness compared to prior versions. Subsequent updates included the VOCALOID4 edition released on April 30, 2015, which updated the voicebanks with enhanced growl effects and additional parameter controls like velocity and timbre adjustments for greater expressiveness. V3 voicebanks are compatible with the VOCALOID4 editor. Additional integrations extended to mobile and app-based workflows through services like NetVOCALOID, facilitating on-the-go tuning and rendering on devices. Bundles such as Gackpoid V4 Complete packaged all three voicebanks with supplementary tools like demo tracks and preset libraries.

Vocal Characteristics

Voice Profile

Gackpoid's voice embodies a deep with a smooth and bold quality, drawing directly from the vocal samples of Japanese singer , known for his low-pitched and emotionally resonant delivery. The voice's versatility spans from soft whispering in the dedicated Whisper voicebank to powerful, belted expressions in the Power voicebank, allowing creators to capture a wide spectrum of vocal dynamics. Expressive features enhance its adaptability, with the Power voicebank supporting and growl effects.

Technical Specifications

Gackpoid's voice synthesis capabilities span a of A1 to C4 in the Native and Power voicebanks, enabling a broad spectrum suitable for various musical expressions within the framework. The Whisper voicebank, introduced in later updates, maintains the lower limit at A1 but extends upward to G3, providing enhanced performance in softer, lower registers for more nuanced deliveries. These ranges are optimized for natural tonal transitions across the specified octaves. The suggested for Gackpoid ranges from 60 to 150 beats per minute (BPM), with optimal performance in mid- genres such as rock, allowing stable synthesis without significant artifacts at these speeds. This flexibility supports dynamic song structures while preserving vocal clarity. support encompasses the full set of Japanese katakana and hiragana characters, facilitating accurate reproduction of standard Japanese in synthesis. Cross-synthesis (XSY) functionality, available in and later versions, enables blending between compatible voicebanks like Native, Power, and Whisper for varied timbres. For VOCALOID3 and VOCALOID4 editors (as of June 2020), system requirements include Windows 8.1 or later (32/64-bit), Intel Dual Core CPU, a minimum of 2 GB RAM (4 GB recommended), and at least 500 MB of hard disk space for the editor plus additional space for voicebanks (approximately 5 GB for the complete set). Gackpoid voicebanks are compatible with the VOCALOID6 editor (as of 2024), which requires Windows 10 version 22H2 or later or Windows 11 version 22H2 or later (64-bit only), Haswell (4th generation) or later CPU, 8 GB RAM minimum, and 30 GB or more hard disk space; Mac OS support is also available. Editing occurs in the .vsqx file format, compatible with VOCALOID editors and digital audio workstations.

Reception and Usage

Commercial Performance

Gackpoid demonstrated strong initial commercial traction following its release as the first male voicebank for the VOCALOID2 engine, with nearly 200 user-created songs appearing online within three days, reflecting immediate user engagement and adoption. This early success was amplified by the voicebank's basis in samples from popular Japanese singer , leveraging his established fanbase to drive interest and sales in both physical and digital formats. Positioned as a pioneering male option in a market dominated by female voicebanks, Gackpoid contributed to broadening the appeal of Vocaloids, which had faced slower uptake prior to its launch. Its professional-grade vocal synthesis and celebrity association helped it secure a prominent place among top offerings, sustaining updates through VOCALOID3 and VOCALOID4 versions. Revenue was generated primarily through software sales, supplemented by expanded digital access via the 2009 NetVOCALOID mobile service, which broadened distribution channels. Merchandise further diversified income streams, including official figures like the Kamui Gakupo produced by , along with apparel and accessories targeted at fans. Despite challenges in matching the explosive popularity of female Vocaloids, the 2012 VOCALOID3 update introduced enhanced synthesis capabilities, such as cross-synthesis (XSY) for improved multilingual compatibility, which aided global accessibility primarily through Japanese vocals.

Notable Songs and Popularity

Gackpoid's popularity surged through a series of iconic songs that showcased its versatile vocal capabilities, particularly in the Japanese Vocaloid community. The demo song "Episode.0", composed by mathru (also known as Kanimiso-P), served as an early highlight when it won the grand prize in a song contest tied to Gackt's 2011 single of the same name, blending Gackpoid's synthesized voice with themes of drama and emotion. Similarly, "Dancing Samurai", another mathru composition uploaded in 2008, became a viral hit by 2009, capturing Gackpoid as a rhythmic samurai character with upbeat electronic elements and achieving widespread acclaim on video-sharing platforms. In 2010, "The Evil King Venomania" (known in Japanese as "Venomania-hou no Kyouki") from mothy's Evillious Chronicles series featured Gackpoid voicing the lustful duke in a narrative-driven rock track, contributing to the software's role in storytelling within Vocaloid music. Collaborations like "ggrks" (or "Go Google It"), a 2009 duet by AaminP with Megurine Luka, highlighted Gackpoid's interplay with other Vocaloids in humorous, tech-themed pop songs. The software's fan-driven success is evident in its extensive use for original compositions, with numerous user-created songs uploaded to Douga, fostering a dedicated following through viral videos and remixes. Gackpoid has been prominently featured in live concerts, including performances at events like Nico Nico Chou Party 2015, where it shared the stage with other synthesizers to enthusiastic crowds. English-language covers of its hit songs, such as "Dancing Samurai", have further boosted international appeal, attracting global fans via platforms like and expanding Gackpoid's reach beyond . In media, Gackpoid's voice appears in various anime-inspired works and fan projects, underscoring its crossover influence. These appearances, combined with inspired fan art and at conventions, have solidified Gackpoid's presence in culture. As of 2024, Gackpoid continues to be featured in new compositions, such as "Morning Star" from the album -Saints and Devils-, demonstrating its enduring popularity in the community. Gackpoid's legacy lies in popularizing male voices, as one of the first major releases sampled from a celebrity like , whose endorsement lent professional credibility and encouraged broader adoption of synthesized male vocals in music production. This foundation helped shift the landscape toward diverse gender representations, influencing subsequent software and community creations.

Community Engagement

Song Contests

The inaugural song contest for Gackpoid, held to celebrate its first anniversary in 2009, was organized by Nico Nico Douga in partnership with and music label CELL, with direct involvement from singer , who provided the voice samples for the software. Announced on June 10, 2009, following a live broadcast by , the contest invited users to submit original songs created using the Gackpoid voicebank, with a deadline of August 31, 2009, resulting in 255 entries. Submissions were judged primarily by himself on criteria including creativity, vocal tuning quality, and thematic alignment, often incorporating samurai motifs reflective of Gackpoid's character design as a purple-haired . The grand prize winner was "Episode.0" by producer KanimisoP (also known as mathru), which earned 300,000 yen and the unique honor of being covered and released by as his 39th single in July 2011; excellence prizes of 100,000 yen each went to eight other entries, such as "Paranoid Doll" by natsuP. Subsequent contests evolved into annual anniversary events, particularly from the 10th anniversary onward, managed by VOCALOTRACKS, a platform under Internet Co., Ltd., Gackpoid's developer, to foster around the character's "birthday" on July 31. These events maintained the core format of submitting original songs utilizing any Gackpoid voicebank variants, with requirements for audio files in format (up to 6 minutes), accompanying , and thumbnails, emphasizing originality and no issues. For the 12th anniversary contest in 2020, entries were accepted from July 8 to July 29, limited to two per participant, with winning works distributed commercially on platforms including , , and . With the release of Gackpoid V3 in 2012, contests adapted to highlight the updated voicebanks, including a promotional event tied to the launch where selected winning songs were added to the database for wider exposure. Later iterations, such as those for V3 and beyond, incorporated categories accommodating the software's expanded capabilities, including English support in the Power voicebank, allowing for bilingual or international-themed submissions. These contests, aligned with promotions around late , have continued to encourage creative use of Gackpoid, contributing to its enduring popularity in user-created songs. For the 17th in 2025, VOCALOTRACKS hosted a contest from July 1 to 31, accepting original songs in the standard format to celebrate the milestone.

Fan Culture and Events

Fans of Gackpoid, known as Kamui Gakupo, form a dedicated segment of the community, actively participating in online content creation and live events that highlight the character's samurai-inspired design and versatile voice. Online communities thrive on platforms like NicoNico Douga and , where fans upload videos, covers, and artwork. For instance, the iconic song "The Madness of Duke Venomania" featuring Gakupo has amassed over 5 million views on NicoNico Douga as of 2025, since its 2010 upload, exemplifying the enduring popularity of fan-produced and original content. Similarly, hosts thousands of illustrations under tags like "vocaloidgakupo" and "ガクポイド," with fan art often emphasizing Gakupo's purple ponytail and motifs. Reddit communities, such as r/Gakupo, further foster discussions and shares of fan creations, though activity remains niche compared to more prominent characters. Live events showcase Gakupo through hologram performances in official concerts, a tradition dating back to the early with the rise of 3D projections. Gakupo has appeared in collaborative shows blending technology with J-rock elements, occasionally crossing over with voice provider Gackt's performances at festivals. A key example is the Lively Paradise series, the first official birthday live for Gumi, Gakupo, and Una, held on August 10, 2024, at a streamed 3D event featuring hit songs and the theme track "Lively Paradise 2024." The 2025 edition, themed around "Sweets," was held on October 12 at harevutai in , continuing the hologram format to engage global audiences via streaming. Merchandise and fan modifications extend Gakupo's appeal, with official products like voicebanks and apparel available through Yamaha's shop, including the Gackpoid V4 Complete bundle priced at USD 99. Fans produce custom voice mods for alternative engines such as and V, adapting Gakupo's timbre for new compositions, while and —often portraying the samurai aesthetic—feature prominently at conventions like . costumes, including wigs and outfits, are sold on specialized sites, enabling fans to embody Gakupo's elegant, purple-clad persona. Gackpoid's fanbase has achieved global reach, with English translations of songs and lyrics facilitating adoption outside . By 2025, fan videos collectively have garnered millions of views across platforms, underscoring the character's international resonance.

References

  1. https://www.vocaloid.com/en/anniversary/history
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  3. https://www.ssw.co.jp/products/vocal/gackpoid/hb/index.html
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  6. https://www.skullknight.net/forum/index.php?threads/an-illustration-by-kentarou-miura-for-gackpoid.9178/
  7. https://www.akarenga-h.jp/en/hokkaido/ainu/a-03/
  8. https://www.zan-live.com/en/live/detail/10430
  9. https://www.animenewsnetwork.com/news/2008-05-07/singer/actor-gackt-lends-voice-for-next-virtual-singer
  10. https://www.animenewsnetwork.com/news/2008-06-20/berserk-miura-draws-virtual-gackt-for-voice-software
  11. https://vocaloid.fandom.com/wiki/Gackpoid
  12. https://www.thomasconner.info/uploads/1/2/8/3/12837634/conner_thomas-ma_thesis.pdf
  13. https://www.animenewsnetwork.com/news/2008-06-24/virtual-gackt-software-maker-to-allow-derivative-works
  14. https://av.watch.impress.co.jp/docs/20080703/internet.htm
  15. https://internet.watch.impress.co.jp/cda/news/2008/07/31/20444.html
  16. https://www.itmedia.co.jp/news/articles/0807/03/news051.html
  17. https://www.vocaloid.com/en/learn/ln6105
  18. https://www.imdb.com/name/nm1374680/bio/
  19. https://www.vocaloid.com/en/products/show/v4l_gackpoid_native_en
  20. https://www.vocaloid.com/en/articles/xsy_group_list
  21. https://www.vocaloid.com/en/support/faq/586
  22. https://www.vocaloid.com/en/support/faq/585
  23. https://www.vocaloid.com/en/vocaloid6/specs
  24. https://www.amiami.com/eng/detail/?gcode=FIG-IPN-4227
  25. https://vocaloid.fandom.com/wiki/V3_Gackpoid
  26. https://www.animenewsnetwork.com/interest/2011-07-18/gackt/gackpoid-cd-is-gackt-39th-top-10-single
  27. https://music.apple.com/gb/album/dancing-samurai-feat-camui-gackpo/1763976259
  28. https://music.apple.com/us/album/evils-forest/385692022
  29. https://open.spotify.com/track/2DxOKTkXeA4PJNvrztyRV7
  30. https://vocaloid.fandom.com/wiki/Camui_Gackpo
  31. https://www.gacktitalia.com/en/category/eventi/nico-nico-supreme-party-2015/
  32. https://www.animenewsnetwork.com/interest/2011-11-03/gackt-graffiti-music-video-for-sket-dance-streamed
  33. https://music.apple.com/no/artist/kamui-gakupo/1353136645
  34. https://vocaloidism.com/2011/06/16/gackpoid-contest-grand-prix-winner-kanimisops-episode-0/
  35. https://vocasphere.net/2020/07/gackpos-12th-anniversary-song-contest-commencement/
  36. https://vocaloidism.com/2012/08/
  37. https://vocasphere.net/2025/07/gackpo-17th-anniversary-contest/
  38. https://www.nicovideo.jp/watch/sm10837381
  39. https://www.pixiv.net/en/tags/vocaloidgakupo
  40. https://www.pixiv.net/en/tags/%25E3%2582%25AC%25E3%2582%25AF%25E3%2583%259D%25E3%2582%25A4%25E3%2583%2589
  41. https://www.reddit.com/r/Gakupo/
  42. https://www.zan-live.com/en/live/detail/10659
  43. https://www.amazon.com/gakupo/s?k=gakupo
  44. https://www.fm-anime.com/gackpoid-332-venomania-cosplay-costume.html
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