Cosmo

A telepathic Russian space dog who serves as the Head of Security of Knowhere. He has proven to be an invaluable ally to the Guardians of the Galaxy.

Cosmo is a Golden Retriever/Labrador cross-breed dog that was a former test animal of the Soviet Space Program. He was launched into Earth's orbit as part of an experiment at some point during the 1960s, ending up drifting into deep space. Somewhere along the line, Cosmo was mutated and developed telepathic abilities, and he wound up arriving on Knowhere. He eventually took the position as head of security of the space station.

Cosmo has since become the liaison to the new Guardians of the Galaxy and has helped them plot their passport destination and travel to trouble-spots in the universe via the Continuum Cortex.

In addition to a dog's standard sense of enhanced hearing and smell, Cosmo has psionic abilities, including high-level telepathy and telekinesis. He has shown to be capable of creating defensive shields strong enough to deflect energy-blasts, as well as project mind-blasts of tremendous force. His exact power levels are unknown, but he has shown to be strong enough to take on a being such as Adam Warlock by himself, and powerful enough to unleash a telekinetic blast able to disable two separate teams of superhumans.

Along with these abilities, Cosmo seems to have a considerably extended lifespan, especially for a dog, since he has been around since the Soviet Union.

Cosmo speaks using telepathy. Cosmo speaks in third person.

Knowhere is the severed head of an ancient Celestial in free orbit, and served as a mining colony and trading outpost on the very outskirts of known space.