Masks

Boss Masks are vanity items dropped by all non-event bosses. They are worn in the social head slot. Each boss has a 14.29% chance to drop its own mask.

Trivia

 * Any boss exclusive to an event will not drop a mask (eg. Ice Queen, Santa-NK1, Pumpking, Everscream, Mourning Wood, Flying Dutchman, Martian Saucer, and all 4 Celestial Towers). All (except the Celestial Towers) will still drop Trophies.
 * It is rumored that the Lunatic Cultist was originally going to be called the Ancient Cultist, as seen how the Mask dropped by the Lunatic Cultist is called Ancient Cultist Mask.

History
보스 가면 Masque