Transformers: The Headmasters bot Headmasters, led by Cerebros return to their home planet to aid in its defense. The situation soon gets worse when it is revealed that Vector Sigma, the super-computer at the planet's heart, was destabilizing, and Optimus Prime again sacrifices his life to save Cybertron. This soon proves to be only delaying the inevitable, however, when a bomb attack instigated by Scorponok turns Cybertron into a burnt-out, inhospitable husk. Rodimus Prime departs to search for a new planet for the Transformers to live on, leaving Cerebros in command, operating from the planet Athenia. Meanwhile, Scorponok replaces Galvatron - who had
Transformers: The Covenant of Primus Primus is an actual relic in the Transformers universe. This concept was first introduced in "Beast Wars", where the Covenant is regarded as a sacred text by the Transformers. Several passages of it are quoted in the series finale "Nemesis", and several are known to be modified Bible verses. From 1998 to 2000 the annual Transformers fan convention Botcon had exclusive storyline that included a group of characters known as the Covenant of Primus. This group consisted of Twelve pre-Cybertronian Transformers based on the Zodiac and created by Primus as a last resort defense against the return of his nemesis,