Cosmog

Cosmog (コスモッグ) is a -type Legendary Pokémon introduced in Generation VII.

Anatomy
Cosmog resembles a floating cloud colored in dark blue and purple. Two light-blue cloud-like formations stem upward from Cosmog's body and seem to be similar to a pair of arms. It has a gold crescent-shape around its body and its face is black with blue cheeks.

Behavior
As seen in Lillie's Cosmog Nebby, it appears to be a curious and playful Pokemon. It also is overly trusting and naive, carelessly approaching even people who may not have the best intentions.

Natural abilities
Under stress and pain, Cosmog can create Ultra Wormholes in an attempt to escape its tormenter(s).

Cosmog evolves into Cosmoem, which evolves into a different form depending on the version of the game. If it evolves in Pokémon Sun, it will become Solgaleo; whereas if it evolves in Pokémon Moon, it will become Lunala.

Evolution
Cosmog is the first evolutionary form of Solgaleo or Lunala. Cosmog can evolve into Cosmoem at level 43 which evolves into Solgaleo (Sun) or Lunala (Moon) at level 53.

By TM
This Pokémon learns no moves via TM/HM.

Trivia

 * A Cosmog named Nebby features prominently in the games' main plot, under the ownership of Lillie. A running gag in the story is Nebby frequently escaping from Lillie's handbag and getting itself into trouble, hence spawning the Internet meme "Get in the Bag, Nebby".
 * Cosmog is the first Legendary Pokémon to have an evolution family.
 * Based on the event in the Altar of the Sunne/Moone it appears that Solgaleo and Lunala can "create" Cosmog together. Whether this is their method of reproduction is unknown.

Origin

 * Cosmog is based on a nebula.

Etymology

 * Cosmog comes from cosmos and fog. It could also involve smog.
 * Cosmovum, the German name, comes from the official romanization of the Japanese name.