Well, Ivaze looks like this:maybe its because the generic imps are so ugly(not the artstyle they are just bald ugly little weirdos to me), i cant imagine a cute femboy imp for the life of me
So I'd imagine her twin would look an awful lot like her. If boi wins (which isn't looking likely), I'd imagine long-but-shorter-than-Ivaze's hair, flat chest, big dick and balls... and probably with just as much eyeliner.