Rook is Unit 118 of the IST project and the supposed leader of Team 117.
Rook was the last unit to be introduced into the IST project, he was the one who lead his team to a high score in the training using his wits and they have been successful since. the adventures remain classified but most recently Rook and his pals have branched of from GUN.
Rook is usually a calm character, but can be easily irritated by nearly anything, but he has the inate ability to shrug it off and continue on the mission.
Two silenced Sub-machine-guns