Prime universe
(Capcom's primary storyline)
Further notes

This Tyrant, code named "T-002", was part of the Arklay Laboratory's quest to develop the "ultimate life form".


In the late 1980s, Umbrella USA's bioweapons project had reached an impasse. While their β ("Beta)" strain could create mutants like the Hunter and Cerberus which could be trained in the manner of dogs, the Arklay Laboratory team under Dr. William Birkin advanced their research towards B.O.W.s of human intelligence. The new ε ("Epsilon") strain was developed to limit the amount of intelligence lost during t-Virus mutations in humans. With this new strain, the Tyrant Project was born, named after the virus.

Though the research team had hopes their Tyrants would far outclass any bio-weapon, the ε strain would only mutate humans if they possessed a certain gene only present in one in ten million people. Umbrella was lucky enough to find several candidates for the Tyrant Project under the development code "T-002". These men, prisoners, were each infected with the virus and subjected to surgeries to help their bodies cope. Only one survived the process.[excerpt 1]

Research on T-002 continued for the next several years, even after the Collapse of the Soviet Union provided Umbrella with Col. Sergei Vladimir, who's clones were participants in the T-103 project. As late as 1998, the Arklay team now under Dr. John Clemens had full expectations T-002 would be tested against trained soldiers.[2]

In mid-1998, a substrain of ε was leaked, leading to the entire Arklay Lab staff being infected or killed and their experimental bio-weapons escaping. During the events of the "Mansion Incident", Dr. Albert Wesker tried to program it to slay the remaining members of Raccoon City's Special Tactics And Rescue Service (S.T.A.R.S.). As the Tyrant awoke from its slumber, it proceeded to impale him first, seriously injuring him.[3] With the help of Brad Vickers, S.T.A.R.S. officers Chris Redfield and Jill Valentine destroyed it on the rooftop with a rocket launcher.[4]



  1. Excerpt from Inside of BIO-HAZARD: "ラクーン施設では数々の生物兵器開発実験が行なわれていたが、 そのなかでも最高機密とされていたのがタイラントプロジェクト、 クレイウィルスε型を用いた究極的なB.O.W.の開発である。 だが惜しくも研究完成前に事故が発生してしまったため、 事故直前に提出された資料を残すのみで、 最終的なタイラントプロジェクトの報告はなされていない。 クレイウィルスε型は同化した生物を瞬時に進化させる画期的な性質を持っていたが、 投与された生物が劇的な身体の変化に耐えきれず死亡してしまうケースが多かったため、 当初実用性を疑問視されていた。行き詁る研究の打開策として考案されたおんが、体力的に優れた成人男子に肉体強化手術を施し、 クレイウルスε型の宿主に使うという方法である。 素体には健康な囚人が選ばれた。 数体の実験体のうち1体の手術は見事成功し、順調な経過を見せていた。"
  1. Takeo (ed.), Inside of BIO-HAZARD, p.56
  2. GameCube Biohazard Kaitai Shinsho. Enterbrain. 
  3. Resident Evil: The Umbrella Chronicles (2007), level: "Rebirth 1".
  4. Chris Redfield file from Resident Evil 5.