"A cursed energy permeated the stuffing of a discarded and forgotten plush doll, giving it new life as Banette. The Pokémon's energy would escape if it were to ever open its mouth. Banette generates energy for laying strong curses by sticking pins into its own body."
He appeared briefly when Lexi visited the Kalos Ranch again, in which she mused that she hadn't bonded much with him and that she'd bring him back onto her team soon. He returned near to the end of the series when Lexi decided to bring him back to her team with the intent of trying to evolve him. After hard training, he eventually did so, finally becoming Banette.
As a Shupper and as Banette, he is a very playful and mischievous Pokémon who likes to pull pranks and trick people in order to get a laugh. It seems very attention seeking, however he also understands when he's being too forceful and full on.
Banette performs acts of voodoo. It generates energy for laying strong curses by sticking pins into its own body.