Purgatory

The Imperial Star Destroyer Purgatory was the home of Xenocide Squad during all of its operations. For a brief time, it was commanded by Lennox during the Invasion of Abraxin in 1 BBY.

History
The Purgatory was the first home of Xenocide Squad. During all of X Squad's planetary operations, the ship acted as a deployment point, extraction point, and transport. During X Squad's long episodes of R & R, they would leave the Purgatory and then return to it when they were once more on duty.

Invasion of Abraxin
The Purgatory acted more or less as an orbital control ship during the Invasion of Abraxin. Xenocide Squad was deployed from the Purgatory via Imperial Gunship at the start of the conflict.

At the end of the conflict, Xeelo Xuz was held prisoner by Lennox after being captured by Xenocide Squad. This was only for a short time, as he escaped with the help of X Squad members Krax Craz and Vlad Stardemon.

Post-Abraxin
As soon as 0 BBY, Lennox became the Captain of the Tyrant, which would be his flag ship for the rest of his career.

Behind the Scenes
Purgatory is a befitting name for the ship considering that while Xeelo is held prisoner on the ship, his fate is being decided in a very limbo-like fashion, hence 'purgatory'.

Appearences

 * Star Wars: The Hegemony of Species