Halloween costume with red horns

DEVIL

This mischievous figure often carries a pitchfork and is said to rule the underworld in many mythologies.

The clue "Halloween costume with red horns" points to a classic spooky outfit people wear during the holiday. The red horns are a key detail—they’re strongly associated with the devil, a common costume choice. Since the answer is a single word, it’s a straightforward definition without wordplay, just a direct link between the visual clue and the character.