Lock (Character)

Info
A member of the mischievous trio Lock, Shock, and Barrel (Enemies) made his first series appearance in Kingdom Hearts by helping steal Jack Skellington's heart experiment.

Kingdom Hearts
''The ringleader of the trio that includes Shock and Barrel. Their walking bathtub helps them get around while they commit all kinds of mischief. They sometimes help Oogie, but they're not really fond of him.''

Kingdom Hearts II
The Nightmare Before Christmas (1993)

''A member of the prankster trio that includes Shock and Barrel. Their walking bathtub helps them get around while they commit all kinds of mischief''.

They sometimes help Oogie, but they're not really loyal to him.

Kingdom Hearts
In the first game, he stole an artificial heart from Dr. Finkelstein to give to Oogie Boogie. However the trio was soon caught even though the heart was gone.

Kingdom Hearts 358/2 Days
The three will appear in this game, as they are seen in screenshots playing a trick on Roxas.

Kingdom Hearts II
In Kingdom Hearts II, he becomes one of Dr. Finkelstein's pranky assistants. While playing, 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.
 * First Visit

In the second visit, Lock, Shock, and Barrel were blamed for stealing Christmas presents from Santa. In the inevitable chase afterwards, the heroes discovered the truth when they told them about Dr. Finkelstein's Experiment.
 * Second Visit