Celesteon

Celesteon (pronounced "Seh-LESS-tee-on") is a dual-type Electric/Ghost legendary Pokémon.

While it is not known to evolve into or from any Pokémon, it can assume a second Forme under currently unknown circumstances. This second Forme is known as Universal Forme, while Celesteon's natural Forme is called Intergalactic Forme.

Celesteon is the master of the Astral Trio, which also includes Stratotheon and Cometheon.