Leviathan Battleship

Samus enters the Leviathan Battleship.

The Leviathan Battleship was an organism from Phaaze outfitted with technology by the Space Pirates after the race was under control by Dark Samus. Samus briefly visited this organic battleship in orbit around the Pirate Homeworld, via a warp site on the planet, to gain control of the vessel but when Samus arrived she needed a Pirate Code. She searched the G.F.S. Vallhalla for it, which she employed to gain control of the Leviathan.

Later on, this battleship was seen under the command by Fleet Admiral Castor Dane of the Galactic Federation, warping an entire fleet (including the G.F.S. Olympus) to Phaaze. Its last act was to open a warp field, which the Federation used to escape, however this living spacecraft was too slow to escape in time (or was merely left behind to be destroyed), just as Phaaze exploded. The Leviathan Battleship was last seen disintegrating in the blast.