Xyz Pendulum Monsters

Xyz Pendulum Monsters are a special category of Pendulum Monster that also count as an Xyz Monster, and can therefore return to the Extra Deck face-up when they would be destroyed, and can then be Pendulum Summoned in certain conditions after a proper Xyz Summon. In very rare cases, "Xyz Pendulum Monsters" can also place themselves into a Pendulum Zone via an effect and serve as a Pendulum Scale.