Brian first appeared in Mega CD, and went on to appear in several other games. His super form is shown below, and his theme song is Endless (Possibilities?). He is the creation of Mega.
Friends: Speed the Hedgehog
Meeting Story: First met Speed while in Cold Mega City, were he witnessed a plane starting to crash. Brian saw Speed inside the doomed plane, and sped up to try and get on before it exploded. When he was close enough, he jumped onboard and successfully rescued the other Hedgehog.
Family: Speed the Hedgehog (Godbrother)
Appearances: Sonic Heroes, My Sims, Sonic and the Black Knight
Misc: His suit is the Ironhog.