Each character is set with one costume.
■ Costume Lv.
Costumes have their own levels. Maintenance Wrenches, Maintenance Drills, and Gold can be used to increase a costume's Lv. and increase its character's stats.
As a character's rarity increases, the max Costume Lv. also increases.
■ Costume Skills
In addition to enhancing the character set with the costume, Costume Skills can also strengthen all characters on the team.
New skill effects are also unlocked by raising a costume's Lv.