An awesome array of military might. In transport mode, able to easily scale steeply graded hills and rocky, brush-filled terrain. Converts into stationary battle platform for quick-strike, counterattack maneuvers. Platform equipped with dual gun emplacements, heavily protected Micromaster Combiner vehicle and hydraulic boarding ramps. Also changes into two cybernetically superior micro robots in Combiner mode. Specially programmed for Decepticon surveillance and Autobot infantry support. Retro and Surge, two tough tenacious fighters, command this hard-hitting battle unit.
Retro appeared in the following 4 comic books: