Hybrid drone ship

The Romulan/Federation/Borg drone ship was an unusual remote controlled starship which attacked the USS Enterprise-D in 2370.
 * As the vessel was unidentiefied it was given no specific name.

The ship was a mixture of Romulan, Federation and Borg technologies, the warp core and disruptor nacelles of a Romulan warbird, a Starfleet style saucer section and the shield structure of a Borg Cube. Visually the main hull of the vessel appeared to be wing section of a D'deridex class warbird with the Starfleet saucer attached to the front of the upper wing with a Starfleet like neck connecting down to the lower wing and a green deflector dish held within a Starfleet stardrive like unit which merged into the lower wing. From the bottom of the stardrive section a large spike protruded. Borg components surrounded much of the aft of the vessel and seemed to fill much of what would usually be void between the warbird wings. The ship had no crew, instead being remote controlled via sub-space communications.

The ship made it's first attack on the Enterprise-D when it was mapping the remote Bandor system. It's first sneak attach disabled the Enterprise's warp drive, sub-light engines and communications, reduced shields to twenty-four percent and momentarily took out sensors. Once the Enterprise returned fire the ship turned tails and warped out of range.

Analysis of the attack by Worf and Data concluded it was aimed at Deanna Troi, who had indeed been injured in the first disruptor barrage. When the ship returned for a second attack Troi was able to detect it had no crew, revealing it was remote controlled. Knowing this the Enterprise crew were able to create an inter-receptive network by firing a series of sub-space beacons around the ship, thus blocking of it's remote communications. In response the vessel self destructed.

Captain Picard hypothesised following the first attack the vessel could indicate a Borg Romulan alliance, he later surmised the vessel had been created specifically to destroy the Enterprise, though who their assailant was, they could not tell. (TNG comic: Strategy)