Cosmog

Cosmog is a Psychic-type legendary Pokémon introduced in Generation VII, making its debut in the Alola region. Known as the Nebula Pokémon, Cosmog is an ethereal creature composed of gaseous matter, resembling a small, swirling nebula. Its body is primarily dark blue and purple, with bright yellow crescent moon shapes adorning its head and base. Cosmog is the pre-evolution of Solgaleo and Lunala, the majestic Box Legendaries of Pokémon Sun and Moon, respectively, evolving into Cosmoem and then into one of the two legendary forms depending on the game version. This makes Cosmog a crucial part of the Alola region's cosmic lore, deeply tied to the Ultra Beasts and the fabric of space and time. In the anime, Cosmog is famously known as "Nebby" by Lillie, a prominent character, and plays a significant role in the plot of the Sun and Moon series, showcasing its endearing yet mysterious nature. Its ability to absorb light and grow, despite its seemingly fragile form, highlights its extraordinary potential as a legendary Pokémon. Cosmog's design evokes a sense of wonder and cosmic beauty, reflecting its origins as a creature from another dimension or the very stars themselves. Its passive and curious demeanor in both games and anime makes it a beloved, albeit rare, encounter.