Little is known of C's background. Angry about the pollution in cities and the dull, grey world, he considers himself to be an environmentalist. However, his methods of returning London to an older time are unorthodox, requiring elite zombies to murder all opposition, including AMS agents. G believes that C has "as much authority as a pocket calculator", alluding to the fact that he merely seems to follow orders.
C was the man behind the attack on Thomas Rogan and his team in One Canada Square. Despite subjecting the AMS to several losses, C was eventually defeated when Lisa Rogan obliterated the area with C4. After the AMS escaped, C used his pistol to knock out a fallen soldier.