Borg renegade ship

Star Trek: The Next Generation
Episode: TNG 252 - Descent, Part I

The rogue band of Borg drones, led by Lore, used this unique design of ship.

Unlike other Borg vessels, which are normally symmetrical, this one had an irregular, multileveled shape. This disjointed appearance was perhaps a result of their disordered state after Hugh "infected" them with a sense of individuality.

Far larger than a Galaxy-class starship, the renegade Borg ship was evidently constructed in less than a year (Hugh returned to the Collective in late 2368 and the vessel was first sighted in 2369), but it is not clear whether the ship was an adapted Borg cube or constructed from scratch. It was eventually destroyed in a solar fusion eruption.