A super genius hacker. Member of the SSS.
Takeyama is the most intelligent member of the SSS and is brought in when they attempt to hack Angel's computer to discover the secrets behind her abilities.
Takeyama was responsible for writing the briefing system that is used by the SSS before their operations. He's a mastermind behind the scenes and does not involve himself in the combat situations.
He is often seen walking around with a laptop, and seems to be bothered by people calling him by his given name. He will often state that he wishes to be referred to as "Christ", which is also his user name. However, no gives a crap about calling him "Christ."