K.C. is a character affiliated with Sykes in 2287.
K.C. is an associate of Sykes, owner of a minigun named Fate. K.C. is also the author of Sykes' old letter, which outlines his feelings towards Sykes theft and sale of Fate and his Jet stash.
K.C. is a mentioned-only character in the Fallout 4 add-on Nuka-World.