Undertale - ...

"I want to fuck that fish"
-Uncle Jobel

Alphys is definitely bi (every answer except "the human" is correct, and Mettaton even understands why you would take that answer-- I just think she wants affection really, in a sort of "Tomoko Kuroki" way).

Undyne seems… "passion-sexual"-- I'm bloody analyzing the precise sexualities of a lizard/dinosaur and a fish. What have you gotten me into?