Lock, Shock, and Barrel are introduced as Oogie Boogie’s not-so-loyal “little henchmen”. The children, Lock, Shock, and Barrel are not completely loyal to Oogie as they are simply making mischief for their own fun.
Lock is supposedly the leader of Oogie’s Boys, but does not always think through things thoroughly and just likes to be in charge.
Shock is the most cunning and intelligent of the three, presumably she is the oldest, and she is the only female of Oogie’s henchmen.
Barrel is Oogie’s “star pupil,” presumably the youngest, and mistakenly considered the stupidest of the three troublemakers, despite his protests to the contrary.
