The Colossus is a Space Pirate battleship that was commissioned during the passing of events in Metroid Prime 2: Echoes and Metroid Prime 3: Corruption. It is used for battle and storage purposes. It has only been mentioned in Space Pirate Data in Corruption.
Before the Phazon Incident
Following the events of Metroid Prime 2: Echoes, the crew of Colossus was planning on commencing an attack on the Galactic Federation forces on Planet Aether. The Federation was stationed on the planet to secure any deposits of the Phazon toxin remaining at the Space Pirate Facility of Agon Wastes and containers of the material all across the planet. The discovery of Phazon here led to the development of the Phazon Enhancement Device. The attack was then changed to a mere signal interception job against the G.F.S. Anhur, but the operation was unsuccessful. It turns out that the Federation left a great supply of Phazon behind them as they departed, and the Pirates immediately salvaged what they could. However, they also acquired the remains of Dark Samus, who, in the storage chambers, revived herself by absorbing Phazon. She consumed all of the toxin and wiped out a third of the Colossus' crew in a matter of minutes. The remaining troopers were succumbed by her Phazon-beguiling tactics and became under her control.
After the Incident
After Dark Samus's takeover, the Colossus was highly improved with the leader's knowledge of Phazon enhancement. Dark Samus did not approve of the Colossus, for it was not as intimidating as she had hoped. The crew ended up implementing cybernetic weapon systems and command consoles into a Leviathan of Planet Phaaze. It is not known what happens to the Colossus after this, although it is purported that the vessel was scrapped in order to outfit the Leviathan with its mechanical material.
- "Phazon was discovered two stellar years ago, and since that moment, Command has been driven to control it all. Two operations have been established, at tremendous cost. Both have failed, thanks to the accursed Hunter, Samus Aran. Her Federation allies now move to secure what little Phazon remains on the planet Aether. This we cannot allow. We, the crew of the battleship Colossus, swear to take that Phazon or die trying." —Space Pirate Data-Our Mission (Metroid Prime 3: Corruption)
- "Planet Aether, home of the Luminoth, was struck by a “Phazon Meteor” five decades ago. The impact had catastrophic effects on the already unstable planet, creating a “dark twin” of the planet and a fierce race known as the Ing. A brutal war between the twin planets took place, with the Ing gaining the upper hand. The G.F.S. Tyr went to the sector to investigate pirate activity, but were forced to make an emergency landing on Aether. Shortly after, the entire crew of Tyr was attacked and annihilated by the Ing. Hunter Samus Aran was sent to investigate, and wound up entangled in the local conflict. Aran fought against both Space Pirates and Ing, and arose victorious. Aether’s “dark twin” vanished, taking with it the Ing horde, and the planet’s peace was finally restored. After the Aether incident, the Federation sent the G.F.S. Anhur back to Aether to deal with the pirate base. Upon arrival, the crew and marines of the Anhur assisted the native Luminoth in dismantling an abandoned Space Pirate mining facility. During the operation, the crew detected the presence of Phazon. The ship’s crew investigated and collected several kilograms of ore, which would later lead to the development of the PED." —Galactic Federation Data-Anhur Incident (Metroid Prime 3: Corruption)
- "Our attempts to intercept the Federation ship departing Aether were unsuccessful. With them went a collection of Phazon, the first to fall into Federation hands. They foolishly left most of the Phazon behind, allowing us to quickly collect what we could. But in our haste we took more than mere Phazon. Our scanners have detected the remains of Dark Samus, who has revived herself within our Phazon storage. Surely, we are cursed. The fiendish shrew consumed all of the Phazon, then wiped out a third of the crew in a matter of minutes. Now she moves at will through the halls of Colossus, using her witchery to beguile the minds of the crew. We are unable to call for aid, and only a few of us remain to stand against her. All is lost." —Space Pirate Data-Stowaway (Metroid Prime 3: Corruption)
- "Our leader provided us with great wisdom on many subjects, including the improvement of our mighty battleship, Colossus. We followed her teachings, and turned our vessel into a ship without peer. But more work remained! Dark Samus required a mighty flagship, one to strike terror in the hearts of her enemies. The might of Colossus was not enough. She demanded more! Her solution was unique and most excellent. We took her great star-beast and fitted it with cybernetic weapon systems. Crew quarters and command consoles were placed within the beast's skull. In time, we created a mighty dreadnought, and called it Leviathan. The great leader was pleased." —Space Pirate Data-The Leviathan (Metroid Prime 3: Corruption)