The Prison Keeper is a Heartless boss battle, featured in the video game, "Kingdom Hearts 2". A Heartless Emblem, controled by the pranksters, Lock, Shock and Barrel. The Prison Keeper makes a brief appearance in Animated vs. Video Game Villains War.
Animated Vs Video Game Villains War
The Prison Keeper is summoned by Maleficent, to aid Lock, Shock and Barrel, in their fight against Vanitas, while she would take Oogie Boogie, the master of the trio, to parts unknown. The Prison Keeper does not last for long, as Vanitas easily takes out the Heartles with a single blast. Despite it's annihilation, Lock, Shock and Barrel manage to escape from Vanitas, before they would share the same fate with the Heartless