David Caldwell

"'You can torture me, you can break me, hell you could even kill me but if you even think of laying a finger on her I'll turn your entire orginization against you with the push of a button.'""—David Caldwell to Aleksandr Petrov"David Caldwell (born March 29, 1992) is the son of Paul and Heather Caldwell, younger brother of Scott Caldwell, and the best friend of Melanie Prewitt. He nearly died protecting Melanie but was saved by Aleksandr Petrov. He became S.C.A.R.'s best assassin and Aleksandr's right hand man.

Biography
David's parents were involved in illegal operations from the start. Scott practically raised David. Sometime around the time David was eleven his parents were imprisoned and Scott moved to Prime City, where he got a job and began taking care of David.

Not too long after he moved he befriended his neighbor and classmate, Melanie Prewitt. The two were practically inseparable

SCAR
After David was shot, Aleksandr himself took David back to S.C.A.R. Headquarters where they used experimental drugs to keep him alive. Aleksandr had found out about Melanie's betrayal and David was the perfect way to get back at her.