Barrel is one of the three mischievous trick-or-treaters who serve Oogie Boogie in Tim Burton's "The Nightmare Before Christmas." He is part of the trio known as Lock, Shock, and Barrel. Each of them wears a distinct mask that reflects their personality and role:

• Lock wears a devil mask.
• Shock wears a witch mask.
• Barrel wears a skeleton mask.

Barrel's mask is a white skull with big, hollow eyes and a wide grin, which complements his overall skeleton-themed appearance. This mask, like the others in the trio, contributes to their eerie and playful demeanor in the movie.