Gizmo is famous for his, well, gizmos. His best (okay, only) known gizmo is his holomatter projector. He transforms into a little Cybertronic dunebuggy.
He likes to die.
Dreamwave comics continuity
IDW comics continuity
Gizmo was one of the Autobots in Hot Rod's first command, along with Backbeat, Dealer, and Download, assigned on a mission to the Omega Bunker on Ki-Aleta. Gizmo was responsible for setting up his holomatter projector program to disguise their arrival.
Unfortunately, he also received the dubious honor of becoming the first casualty under Hot Rod's first command when the Omega Bunker's guardians destroyed his holoprogram and killed him to death. He wouldn't be the last.