From the game guide:
“(Cater’s) hairstyle is not half-up, it is a pompadour. Snaggletooth character. His right canine tooth is generally visible.
Drooping eyes. Both ears pierced. His face looks a little older than that of Ace and Deuce, as he is a third-year student.
He tucks his hair over here behind his ear, so it curls forward. Look at the overall balance and give him something of a sexy look with the angle of the curl.”
During the Firelit Sky event we learn that while Cater “always thought the Scalding Sands was a cool place”, he doesn’t “exactly have the money for vacations”, so he never expected to ever be able to actually visit.
Cater’s unique magic Split Card (In Japanese: Fluttering Hand (of Cards)) creates identical clones of Cater himself, though using the spell for an extended period of time is apparently very taxing.
It is unclear if there is a limit to how many copies Cater is capable of producing at one time. In-game he has only created four at once, but it has been hinted that he can do more, and he creates many at once in the manga.
The copies may be capable of dying, with one sacrificing itself to save Deuce during Riddle’s overblot in the manga adaptation (not canon to the game).
