Cosmog is available in Pokemon GO via Special Research quests. This is the only way to catch the Nebula Pokemon, originally released in September 2022 as part of the Season of Light. Pokemon GO ...

Cosmog will join your party ... Talk to the Looker at the motel to the left of the Pokemon Center on Route 8 on Akala Island. Ultra Beast Location: It is a random encounter in Diglett Tunnel ...

After defeating the Elite Four and completing the Ultra Beast side quest ... locations to find the corresponding Legendary Pokemon: Cosmog: You can get it after the previous one evolves.