A scout under the command of Optimus Prime, B-127 was part of the final battle for Cybertron — a battle that ended with the Autobot position overrun by the Decepticons and necessitating a full-scale Autobot evacuation of Cybertron. As part of this evacuation, Prime tasked him with a reconnaissance mission to the distant planet of Earth—its location hidden from the Decepticons—in the hopes that the scout could establish a base for the Autobots to regroup and strike back. Launched off-planet aboard an escape pod, B-127 crash-landed in California in the year 1987, having the bad fortune to land in the woods where Sector Seven agent Jack Burns had been conducting a training exercise.