Spirit of Fire

The Spirit of Fire was a massive UNSC ship, converted from a cruise liner and fitted with deployable bases, allowing for a ship-to-surface deployment of masses of weapons, facilities and soldiers to wage massive war against the Covenant. The Spirit of Fire was lost near the start of the war after it was grounded on a Flood-controlled Shield World, which the Prophet of Regret wanted for the Covenant's own use. The Spirit of Fire was able to vanquish the Flood and defeat the Covenant, but at the price of being lost from Human Space. The Spirit of Fire continued to fight the Covenant in remote locations across the Galaxy, and its constantly-renewing supply reactors allowed it to create masses of military machines to aid in the fight against the Covenant.

It took the ship years to reach Earth again, and when it did, the war was long since over.

The crew of the Spirit of Fire include: the Captain, a moustached man who shoots MAC blasts at people, a Professor who's research meant that she was a prime target for the Covvies, three Spartans, a clothed version of Cortana and a bald Sergeant, who gets killed fighting an evil Arbiter, who he kills in the process.