Prisoner CR-SO1 is one of the six playable characters in Trauma Team
. Voiced by the prolific Nolan North
in the North American release, he is a prisoner serving a 250 year sentence, having been convicted of a bio-terrorism attack. He has amnesia and does not recall whether he committed the crime or not, but he is a skilled surgeon. In return for a reduced sentence, he has been allowed to perform surgical procedures on patients at Resurgam First Care, one of the nation's top hospitals.His real name,not revealed in the game is ''Erhard Muller''.