Their real name is Eugene. They dislike talking to Frog, likely because they find Frog annoying. They have a soul. They wish they had legs. They don't take up any space. They occasionally get hungry for fish food. They have a larger variant, that of which being BIG Fish, who acts very similarly, but makes a different sound. They occasionally wonder where Finger (possibly being the same Finger from the April Fools update who occasionally fights players in the lobby) is. MR doesn't kill them.