Costumes (not to be confused with accessories or the Halloween Costume '17) are unique cosmetic items for the player's character. With this option, the player can completely change the in-game model of the character they are using.
While similar to accessories, costumes are not a cosmetic item in the traditional sense. Costumes are a new character model that the player can select on the bottom left of the cosmetic customization screen. The player can then apply colors and accessories as desired to the new version of the character. All poses, colors, hair colors, and accessories that the player has previously unlocked will carry over to the new version if they are available. However, most costumes have a very limited range of accessories and colors available, with an "X" appearing over most of the other cosmetics. Costumes are by far the rarest cosmetic, with only a few specific characters possessing them.
List of Costumes
|Winter||Own DLC 10.|
|Swimsuit||Beach Party Event & Rerun Event|
Global counter reward. Retired.
|Pig||Beware Pigformation Event|
Free all characters from their Pigformation.
|Swimsuit||Summer Games Event & Rerun Event|
First global counter reward.
|Devourer Poppo||Poppo Event (2019)|
As Tuxedo Poppo, defeat on Normal difficulty or higher.
|Sakura Miko||Own DLC 11.|
|Sakura Miko (New Year's)|
|Mousse Poppo||Bounty Hunters Event |
Reach Rank A in the Guild Ranking.
|Swimsuit||Summer Games (2020 Rerun) Event|
Second global counter reward.
|Swimsuit||Master Anglers Event|
Reach a fishing score of 4000.