In 1985, to combat rampant Autobot aggression on Cybertron, the Decepticons attempt to engineer a new squadron of aerial fighters. Jetfire was the prototype. Within a few months of being brought online, however, Jetfire learns enough about the Autobots to know where his true allegiance lies. He defects to the Autobots a mere five months after creation. The Old One, deciding the Autobots need more air power as well, sacrifice five Autobot "volunteers" and use their bodies and reformatted cores to create the Aerialbots, using technology brought to the Autobots by Jetfire.