Lock, Shock and Barrel

Lock, Shock and Barrel are three evil little trick-or-treat themed ghouls from the Nightmare Before Christmas notable for being malicious pranksters as well as the henchmen of Oogie Boogie - although unlike Oogie Boogie the three roamed quite freely around Halloween Town, though were definitely some of the more openly wicked of its residents.

Lock wears a devil-mask, Shock resembles a witch and Barrel has a skeleton-mask - these serve to make the three villains rather memorable along with their famous song "Kidnap the Sandy Claws", in which they describe in gruesome detail their plans to kidnap Santa and bring him to Oogie Boogie.

Jack Skellington, the main hero of the story, actually hired Lock, Shock and Barrel to kidnap Santa Clause so he could take over Christmas but he was unaware of how much chaos this would ultimately cause and helped rescue Santa when things got out of hand.

As well as their role in the film Lock, Shock and Barrel have appeared as bosses in various videogames, the more notable probably being the Kingdom Hearts series.