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: Dark of the Moon million) and Japan ($54.2 million). During Hasbro Investor Day, it was announced that the DVD and Blu-ray Disc would be released in the fourth quarter of 2011. The NTSC home release for the film was released on September 30, 2011, with a Blu-ray 3D version of the film slated for release in "the coming months". However, the first home release was criticized for the lack of bonus features. A Walmart exclusive edition of "Transformers: Dark of the Moon" also was released on September 30, 2011. The PAL DVD and Blu-ray Discs of "Transformers: Dark of the Moon" was released on