In "Prey," Ultra Magnus tells Jack and Arcee that he detected five Autobot life signatures that remained online. Ultra Magnus also mentioned that he had encountered other Autobots during his travels, many of which perished in Decepticon attacks. Later, he helps Bulkhead, Wheeljack and Miko escape from the Predacon named Predaking before finding Ratchet, Bumblebee and Raf at the Harbinger and meeting Agent Fowler and June Darby. Ultra Magnus decides that the Autobots must defeat Megatron once and for all and, after taking command, offers them a large supply of weapons to assist in the fight.