Unlike many alien superheroes, who either come to Earth accidentally, get assigned to the planet as law enforcement agents, or come as part of an invading force and generally reside on the planet as technically illegal immigrants, Grey moved to Earth completely legally and of his own free will. When he was a young boy, his parents came to the planet as part of a diplomatic envoy, with him tagging along, and he fell in love with the general mishmash of food and culture of New York (Or Paragon City, or Titan City, depending on the universe), and as an adult moved there permanently, eventually becoming a naturalized citizen.

Currently, he operates as the owner of a comic shop in Brooklyn, and also as a legally licensed superhero, with the power of superhuman leaping ability and wielding a pair of pulse pistols usually set on stun obtained on his home planet.

Not currently a member of a team, but is close friends with and regularly teams up with Alex LaChance to_endure: codename Durandal.