Tyrraz

In alternate realities, Tyrraz was a planet located somewhere in the space of the galaxy, a body that was gutted and reconstructed with technology to be a mobile attack platform.

Alternate reality
In one version of reality, Tyrraz was assimilated by the Borg. and became their mobile homeworld in their ongoing attempts to dominate the galaxy. In the 23rd century of this timeline, Tyrraz was tracked by the Imperial Planets as an example of the ongoing threats faced to their expansion. 


 * The time travel-distortion caused an "evil" variation of reality that was similar in respects to Star Trek's mirror universe, but with elements of DC Comics characters from the Legion of Super-Heroes. In an unaltered version of events, Tyrraz was a mobile planet that was the base of operation for the Legion's foe, Tyr in the 30th century.