Cosmo (Earth-199999)

Cosmo is a sentient dog from Soviet Russia. He was part of their space program before things apparently went horribly awry and he ended up in deep space—by 2014, he was housed in a case by the Collector. Given that this was 25 years after the fall of the U.S.S.R., far beyond the typical lifespan of a dog, it is likely that his aging process was altered somehow. Following the near-destruction of the Collector's residence by Carina and the Power Stone, Cosmo was freed from his confines, but nonetheless hung around the premises, apparently having no place to go, and perhaps even harboring a fondness for the Collector.