Rampage

A former Cybertron (Autobot), Rampage (Wheeljack in English version) wears the scarred insignia as a constant reminder of what he left. He believes the supposedly-noble Cybertrons left him on the field of battle to die, and particularly blames his former friend Hot Rod. He is a fierce soldier with a lot of tricks up his sleeve.

He's accompanied by his Micron (Mini-Con) partner Hawk (Wind Sheer in English version), who also used to be allied with the Cybertrons, but followed Rampage over to the dark side.

(Source: TF Wiki, edited)