Omega (Unlimited)

Omega is an entity of pure destruction in the anime Final Fantasy: Unlimited. It is the consumer of worlds, made up of anti-matter. Earl Tyrant desires to control Omega and orders his Lords of Gaudium to find it.

Omega was initially one whole entity, but it was broken apart somehow and its pieces are strewn all over the Wonderland. Some of the Omega pieces lay dormant and appeared as crystals, while other active Omega pieces continue to wreck havoc as they search for its lost pieces to become one being again.

Pieces of Omega have continued to appear upon the protagonist's path. The Ghost Train which the Hayakawa twins Yu and Ai and Lisa Pacifist took was attacked by Omega's Nail, before Kaze successfully defeated it with Ifrit. Then Omega's hair attacked, only to be defeated by Titan. But once Omega's Fin destroyed the train, it turned out to be powered by one of the Omega pieces.

Clear
In their journey towards Gaudium, the protagonists lost track of Ai, who falls into a barren world. There she meets with Clear, an iridescent boy. Clear turns out to be a piece of Omega, specifically the Omega's heart. The Gaudium Lords manage to capture Clear and bring him to Earl Tyrant.