The Transformers #38

Direct

The Autobot Headmasters arrive on Earth, and track Goldbug's distress signal to the former Ark site, where they find Spike Witwicky and the small toy car that holds Goldbug's brain. Fortress Maximus has been upgraded where his head is now another Autobot named Cerebros and Galen is the head of Cerebros. The Decepticon Headmasters also arrive on Earth, and track the signal to the same site. As a battle erupts between the two warring factions, Galen and Lord Zarak detach from their respective Transformers to fight, but Galen sacrifices his life to save Spike.