Estimated 20+ (2015 Anime short)
|Home world:||Earth (Gridman Universe)|
|Series:||Denkou Choujin Gridman|
|First appearance:||Denkou Choujin Gridman Episode 1: "The Birth of a New Century Hero!" (1993)|
|Last appearance:||Denkou Choujin Gridman: "Boys Invent Great Hero" (2015)|
|Number of appearances||39|
|Type:||Villain (Under control of Khan)|
|Affiliation||Khan Digifier (formerly)|
Gridman Sigma (Host)
|Portrayed by||Tsuyoshi Sugawara (Gridman)|
Koichi Yamadera (2015 short, voiced)
Denkou Choujin Gridman
A classmate of Naoto Sho and his friends, Takeshi always left out and felt alone, finding solace in making monsters on a PC Game known as "The Castle of Torture". He was later placed under control by Khan Digifier and thus created monsters based on every grudges he developed in his daily lives. Among the motivation he used is also his affection for Yuka, one of Naoto's friends and thus having sent some of his monsters against her in certain occasions. After he was freed from Khan's influence, Takeshi helped Naoto in supporting Gridman and thus helping him defeating Khan Digifier.
Denkou Choujin Gridman: "Boys Invent Great Hero"
Several years after Khan Digifier's demise, mirages of his past monsters appeared and terrorized the city. As an adult Takeshi entered a dump area filled with computer monitors, a strange light radiated him, granting him an Acceptor and transformed him into Gridman Sigma to fight against the mirage monsters.
Powers and Weapons
- Enhanced Intelligence: Takeshi seemed to be incredibly smart in computer engineering.
- Acceptor: Using the Acceptor, Takeshi can transform into Gridman Sigma.