King Cola is the ruler of Kiddie Kingdom in Nuka-World.
Background
King Cola was created to function as one of the mascots for Nuka-World, with a special focus on Kiddie Kingdom. In 2077, Leo Mendoza was selected to play him for the show at Kiddie Kingdom.
Appearances
King Cola is only mentioned in the Fallout 4 add-on Nuka-World.
Behind the scenes
He is in the same family as Cappy and Bottle.[1]