Koutarou Takamiya
高宮 鋼太郎
Teppei's older brother. He's a 16 year-old Professor in Robotics who upon releasing a thesis in AI Robot Technology, got kidnapped by the Machine Empire.
(Source: TVTropes)
(Source: TVTropes)
Grelle, Josh
English
Sasaki, Nozomu
Japanese
Connolly, Kevin M.
English
De Angelis, Vittorio
Italian