This fossil beast appeared in episode 11, "The Conspiracy of the Killer Gildeen," and has a form very similar to Raideen.
It was created as a final blow in response to the uproar that ensued when a dam was destroyed following a battle between Raideen, Gante, and Drome, resulting in resentment against Raideen among the surrounding residents.
It is not simply a fake; Prince Sharkin describes it as "a fossil beast that incites hatred in humans." It has not committed any crimes that would damage its reputation like the typical fakes (it could be said that this was no longer necessary). Additionally, in the original work, it is not particularly mistaken for Raideen, and everyone calls it a fossil beast from the beginning, so it is not treated as a fake.
Its armament is similar to Raideen's, and it uses three counterfeit weapons: a Gil Arrow (God Arrow) from its mouth, a Gil Sword (God Breaker), and a Gil Boomerang (God Boomerang) on its arms.