Red: While lulling its enemies with its vacant look, this wily POKéMON will use psychokinetic powers.Yellow: Always tormented by headaches. It uses psychic powers, but it is not known if it intends to do so.Gold: It has mystical powers but doesn't recall that it has used them. That is why it always looks puzzled.
Prof. Lotus' Notes: Despite the Psy- prefix in the name coming from Psychic, Psyduck is not a has no Psychic partial typing. I think this is a nod to how confused this Pokemon is. You heard it here first.