cosmog
A Psychic-type Legendary Pokémon, #0790 in the National Pokédex.
A specific Cosmog named "Nebby" plays a major role in Pokémon Sun and Moon and Ultra Sun and Moon. Lillie keeps it in her bag for most of the story.
Evolves into Cosmoem, then Solgaleo or Lunala.
Japanese name: Cosmog