Oogie Boogie is the main antagonist in the animated film 'The Nightmare Before Christmas.' He is a sinister, boisterous villain who resides in his lair underneath the town of Halloween Town. Known for his gambling obsession and love for the macabre, Oogie Boogie is made of a burlap sack filled with bugs, which he uses to intimidate others. His role in the series is to disrupt the plans of Jack Skellington, the Pumpkin King, and to create havoc in Halloween Town. Oogie's sadistic nature and fearsome appearance make him a memorable villain.