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 mentioned only in the Fallout 4 add-on Nuka-World.