Prime soon had other things to worry about, as Magnus arrived on Earth with the intention of taking the Matrix, which he believed was rightfully his, at all costs. Prime, who refused to fight back, was seriously injured by Magnus. Magnus tracked Optimus to a desert island, where he pretended to offer him the hand of friendship, only to attempt to absorb the Matrix for himself. During the struggle, the brothers combined into the form of Omega Prime, also known as the God Fire Convoy. Through this link, Magnus was also able to channel the power of the Matrix, which he used to supercharge the into newly colored forms. Prime went on to battle the Decepticons on many other occasions. Although Magnus remained a free agent, refusing to take orders from his brother, over time, his animosity dwindled, and he frequently helped the Autobots by combining with Prime to battle the Predacons and Decepticons. During the final battle with Megatron's new form, Galvatron, the two brothers finally reconciled. Together, they faced Galvatron at the Earth's core and defeated him once and for all.