CR-S01 (1996-???) is a prodigy surgeon and main character of the Surgery section of Trauma Team. He was serving a prison sentence of 250 years due to alleged bioterrorism, but thanks to the efforts of Holden, CR-S01 was given temporary release and resumed his career as a surgeon in exchange for reduced sentence time. His true name was never revealed during the entire course of the game. However, in the official Famitsu-released Japanese guidebook of the game, his name is stated to be Erhard Muller.