Lock, Shock, and Barrel are a mischievous trio of trick-or-treaters, who often serve as Oogie Boogie's henchmen.

Although they are always seen together, the trio appears to have trouble with one another from time-to-time, seeming to disagree and argue over little problems.

Lock’s voice should at least come close to sounding like either Paul Reubens or Jess Harnell.