Cosmo

Cosmo is a Soviet space dog who was launched into orbit during the early days of the space race and somehow ended up at Knowhere, the severed head of a Celestial used as a deep-space mining colony, where he serves as its chief of security.

Bursting onto the scene in 2008's Nova #2, courtesy of Dan Abnett, Andy Lanning, and Wellinton Alves, Cosmo is one of the Modern Age's most distinctive and beloved corners of Marvel's cosmic universe. This charming character shares adventures with an extraordinary roster — Nova, Rocket Raccoon, Gamora, Groot, and Drax the Destroyer — placing Cosmo squarely at the heart of Marvel's wildly imaginative outer-space storytelling across Nova, Guardians of the Galaxy, and Rocket Raccoon. It's a compact but meaningful presence in the catalog, and every appearance carries the infectious energy that made Marvel's cosmic revival of the late 2000s such a landmark era for fans who love their superheroes with a little interstellar flair.