Grand Maximus

Grand Maximus is the Cybertron Solar System Commander and Fortress Maximus's little brother. He changes into a base, a starship, and a robot. His Headmaster component was a robot named Grand. Grand was a human Pretender and also had a human Headmaster partner named Gran.

Cartoon Bio (Japan):

Grand Maximus was first seen giving the Cybertrons the technology for Godbomber. He later rescued God Ginrai from Black Zarak and Overlord on Earth's moon. For a while, Maximus spent his time preventing Zarak from entering Earth's atmosphere. Later Zarak trapped him in an electromagnetic field. Ginrai rescued him. Maximus then sends him in to space once more. Maximus then takes the Cybertrons to destroy the Destron weapon. Zarak then sends him crashing to Earth. He is saved by Ginrai and GoShooter. Maximus then sets up a strikeforce to destroy Destron Headquarters. Maximus then defeats King Poseidon. Maximus later frees Shooter from the Destrons. Maximus then saves the Cybertrons from Zarak and Overlord. Grand then returns Maximus to Seibertron after destroying Devil Z.