Sgt. Hound, as a scout for Optimus Prime throughout the third Cybertronian war, was instrumental in the victory of the Autobots over the brutal Decepticons. Along with Special Operations Officer Autobot Jazz, Sgt. Hound presented the General with precise intelligence that allowed the newly-reconstituted Autobot Firestormers to route Megatron's expansion of the Decepticon Star Empire before it could attack any other worlds. The battle ended when the experimental energon refinery that Sgt. Hound had forewarned about was struck by a Decepticon missile. The Decepticons destroyed themselves, but the explosion also cast Sgt. Hound and General Optimus Prime through a rupture in reality.
With the war over in his own universe, Sgt. Hound attempted to find peace in his new home. Unfortunately millions of years of conflict, honed military skills and alertness prevented him from finding it. When General Optimus Prime joined Security Administration Officer Cheetor's task force, Sgt. Hound once again enlisted under his commanding officer. Even with war and military service being all that he can remember, Sgt. Hound is still as friendly and compassionate as the day he came online. He befriended many Low-Techs, including fellow former soldiers Dia and Cline.