The Nightmare Before Christmas: Oogie Boogie

Oogie Boogie is the main antagonist of the film. Oogie Boogie is essentially the Bogeyman, resembling a large burlap sack. When Oogie Boogie is defeated, it is revealed that he is a colony of bugs wrapped in sacking. Unlike all the other inhabitants of Halloween Town, who are merely monsters who scare people simply because they enjoy it as a celebration of their skill and fun, it appears that Oogie is truly evil. It is suggested that his sadistic nature had resulted in his exile from the mainstream Halloween Town. He lives in an underground lair full of torture devices, each of which features a casino-like appearance. Red skeletons - implied to be the remains of previous victims - are in several of the devices, and overhanging chains are used as perches by skeletal bats. Oogie-Boogie's lair, during his theme song, is lit with black lights in the style of a cheap funhouse. Under these, Oogie himself glows bright green, similar to a glow stick. After the lights dim, however, the bright color is sapped from his lair, transforming its appearance into that of a dank, cellar-like dungeon. From Wikipedia