While Scallion's hair is fixed and more of an updated design, Fin just has a different outfit entirely along with a more femboyish appearance. I mean same goes to Fishy vise versa, they both use the more opposite sex appearance and charm to try to win over their crushes who happen to be Christian. Fin, while still doing masculine activity, appears to be more female and would happily take over as the wife (if happened to have kids lmao). His symbol is inverted, he's now wearing somewhat of a crop top with fish nets (get it lmao I ain't funny) and he has a necklace.

Anyways enjoy this image