The players can change and upgrade the skin of a character inside the game. Still, skin rarity can be upgraded only in terms of visuals such as additional hats, glasses, or variations in the color scheme. Each rarity level has a list of predefined skins. Buying an additional skin does not increase the rarity parameter such as max hero level, max ability level, and OPAL earning battles. The player can improve the character's appearance through OPAL and by completing missions.