Lock, Shock and Barrel

Lock, Shock, and Barrel are the (former) secondary antagonists from Tim Burton's 1993 animated film, The Nightmare Before Christmas. They are Oogie Boogie's former henchmen.

Lock is voiced by Paul Reubens, Shock is voiced by Catherine O'Hara, and Barrel is voiced by Danny Elfman.

Kingdom Hearts
As well as their role in the film, Lock, Shock, and Barrel has also appeared as bosses in various video games, the more notable probably being Kingdom Hearts.

Kingdom Hearts
In Kingdom Hearts, they stole an artificial Heart from Dr. Finkelstein to give to Oogie. However, they were soon captured, without the Heart. After their battle, they reluctantly revealed tips on how to defeat Oogie. It was assumed that they left the mansion afterwards, since they were seen in Kingdom Hearts II.

First Visit
In Kingdom Hearts II, it was revealed that they became Dr. Finkelstein's assistants. When they went out to play, they came across Maleficent and told her of Oogie Boogie's fate. Maleficent revived Oogie and gave them control of the Prison Keeper Heartless as a distraction for Sora and company.

Second Visit
In the second visit, they were blamed for stealing Christmas Presents from Santa. In the inevitable chase afterward, the heroes discovered the truth when they told them about Dr. Finkelstein's experiment.

Trivia

 * Their names were a play on the figure of speech lock, stock, and barrel, meaning "all", "total", and "everything".
 * In Kingdom Hearts, after the mutation of Oogie's lair, it is unknown what happened with Lock, Shock, and Barrel, because they were defeated by Sora inside Oogie's lair. However, in the other games of the series, it is revealed that they survived.
 * In The Nightmare Before Christmas: Oogie's Revenge, it is unknown what happened with Lock, Shock, and Barrel, because, after they transport Jack to the Christmas Town, they aren't seen again in the videogame. However, they could be probably exiled from Halloween Town by Jack.
 * In a deleted scene of the film, Lock, Shock, and Barrel are surprised by Jack while they are in the elevator cage. For this reason, they chip vacuum, leaving their fates unknown. This deleted scene also explains because Jack found the elevator cage under the bridge entrance.
 * In the Russian version of the film, Shock was voiced by the male voice actor.