The Chimerian Hammer is Vilgax's ship. It is called the Chimerian Hammer because Vilgax's species is called Chimera Sui Generis
It looks like a big massive space ship with all kinds of alien tech. Its main color is brown and orange. It has a red light coming out of the end of the ship and in the front are some orange lightning bolts across the two main parts of the ship.
Its shown to have many different weapons and guns. Its able to take down almost any other ship in space.
It first appears in the episodeAnd Then There Were 10, when Vilgax is trying to recover the Omnitrix from Xylene and her ship. It was easy for The Chimerian Hammer to take down her ship but he failed to get the Omnitrix.