Cosmetics in Brawl Arena are element-locked and bought per character — every fighter has a fixed signature element, so cosmetics always match it (never fire on an ice fighter). There's no free theme choice: you buy and equip up to three cosmetic slots per character with in-game Coins.
▶ Play nowEvery fighter's cosmetics render in one of six elemental colours:
See the fighter roster for which element each character carries.