Simeon

Simeon is an E.S. unit that appears in the Xenosaga series. It is piloted by Albedo.

Episode I
Simeon is used by Albedo when he visits Pleroma and is used by him for transportation throughout the remainder of the game, when he heads to the Kukai Foundation, Song of Nephilim and Proto Merkabah. He is at times accompanied by a Kirschwasser co-pilot. The party does battle with Simeon while at the Song of Nephilim, with Albedo retreating afterwards due to the appearance of the Blue Testament.

Episode II
Simeon continues to be used by Albedo until he opens the path to Old Miltia. At the end of the game when Albedo is welcomed by Wilhelm as the White Testament, he appears a top a redesigned version of Simeon, which is no longer humanoid in appearance.

As a boss

 * Simeon