Atha Prime

Atha Prime was a "genetics master", ruler of the dark worlds, and one of the architects of the Clone Wars.

History
During the war, he worked as a CIS genetics terrorist, and his attempt to destroy Skye was defeated by Kharys, Obi-wan Kenobi, Anakin Skywalker, and Halagad Ventor.

He was exiled to a remote part of the Galaxy for providing Grand Moff Trachta with altered clone stormtroopers for his attempt to kill both Darth Vader and Palpatine, but was eventually freed by the death of the Emperor.

While there, he developed elite shock troopers known as Clone Warriors which he used to decimate several Rebel Alliance outposts in an attempt to crush the Rebel Alliance. He performed these attacks from his mobile base, the Annihilator, which resembled two Star Destroyers joined together.

Prime's personal starfighter, the Apex Invader, was able to attach atop the Annihilator which gave him the ultimate command vantage point for battles, as well as a personal fighting vehicle which was piloted by his droid Blue-Four who was also Prime's personal attendant and confidant.

Behind the scenes

 * Although Atha Prime was originally designed to be a new villain after the death of Palpatine by Kenner, Abel G. Peña later attempted to reuse the character as part of Grand Moff Trachta's betrayal against the Empire. He wrote the character as part of an article in The Official Star Wars Fact File 122, but the mention to Atha Prime was never printed. In Aliens in the Empire, Peña mentioned a "genetics terrorist" during the Clone Wars that was intended to reference Atha Prime. Additionally, in 2004 Peña and Dan Wallace worked on a Polyhedron article on Warlords that was never published due to the company's collapse that would have established Atha Prime and Shadowspawn as being the same.
 * Atha Prime's look was inspired by concepts of the Royal Guard, and later reused for the Imperial sentinels.