Getter Emperor is a massive, ever-expanding Getter Machine existing in the far future. It signifies the unstoppable force of Getter Rays, and poses a threat to all life in the universe as a result of its sheer size and power. In all appearances of Shin Getter Robo, the Emperor has been alluded to; usually in the form of either the appearance of the Emperor's equivalent of the Eagle Machine or the machine 'evolving' in the case of Shin Getter Robo vs. Neo Getter Robo. It has yet to have made a full anime appearance, though it has had cameos in both Getter Robo Armageddon and New Getter Robo.
Getter Emperor's first official appearance was in the manga Shin Getter Robo. Here, it is depicted in the distant future terrorizing an alien armada prompting one of its smaller vessels to travel back to the era of the creation of the Emperor's larval form: Shin Getter Robo. After a grueling struggle, the enormous vessel is pulled -along with Ryoma Nagare and Hayato Jin in Shin Getter Robo- back to its native era where it is destroyed by Getter Emperor. After Ryoma and Hayato ponder the meaning of this enormous Getter, they are sent back to their own time.
Getter Emperor also made an appearance in Getter Robo Anthology~Will of Evolution~. It appears in chapter 1, 2, 4, 5, and 6. In chapter 1 the Emperor appears in a vision during a battle between a new Mecha Saurus and the original Getter team.  In chapter 2 the team from Getter Robo āḥ while battling a unknown Getter Robo also saw Getter Emperor.
Appearance & CapabilitiesEdit
Getter Emperor has currently only been seen in the form of 'Getter Emperor 1' which follows the traditional Getter 1 design, and expands upon it. Other forms are speculated to follow the same pattern.
Getter Emperor is an ever-expanding mech typically depicted at a galactic scale, which has earned hearty amounts of debate concerning it and other 'almighty' mecha such as Tengen Toppa Gurren Lagann and Demonbane. Weaponry is unknown aside from the Eagle equivalent possessing a Getter Beam capable of producing amounts of energy equivalent to those produced by the Big Bang, the complete machine's own Getter Beam which is capable of traveling over 400 million light-years, and the machine's own size likely due to an enormous gravitational field and the corrosive nature of concentrated Getter Rays.