Igglybuff

It has a very soft body. If it starts to roll, it will bounce all over and be impossible to stop.

Pokemon Power — Gaze: Once during your turn (before you attack), choose 1 of your opponent's Benched Pokémon that has a Pokémon Power. That power stops working until the end of this turn. This effect ends if that Pokémon leaves the Bench. (Pokémon Power)