Shouko's father. He was supposedly kidnapped by the Tetsumen Tou; however, this is just a ruse, as he was just possessed by the Sigma Computer. He also was the overseer of the Battle Royale, although no-one suspected it. As Kaizer, he basically ordered his army to capture both Shouko and "Red Baron". He basically employed his 3 henchmen to try to take it, but as these failed, he was forced to fire them, replacing them with Shadow. His identity was revealed in Episode 33, to which Shouko reacted in a shocked way. He confessed to Shouko the extent of his crimes since he was possessed by the Sigma Computer. Shouko pleaded him to come back, but refused, as he had one task to do: destroy the Sigma Computer. He supposedly died while the Sigma Computer was being destroyed, but, in reality, he survived, along with the Sigma computer, which then gained 2 separate identities: one male, one female. He helped train Ken and the others in the final episodes of the Sigma Computer story arc. (Source: Wikipedia)