Harbinger (Sith dreadnaught)

The Harbinger was a Sith dreadnaught active in 5000 BBY during the Great Hyperspace War. Its commander was Saes Rrogon, a Jedi-turned-Sith Lord. The Harbinger and another dreadnaught, the Omen, were carrying Lignan ore to Sith Lord Naga Sadow when a Jedi starfighter ambushed them. Relin Druur, Saes' former Jedi Master, infiltrated the Harbinger and sabotaged its hyperdrive, while Druur's Padawan, Drev Hassin, held off several of Harbinger's own fighters. Eventually, Hassin rammed the Infiltrator into the Harbinger's bridge, making the Harbinger crash into the Omen just as the vessels escaped into hyperspace. The collision knocked the Omen off course and sent it crashing into the remote planet of Kesh.

Harbinger itself passed through an unstable hyperspace tunnel, which caused it to travel through time to the year 41.5 ABY. There, Relin again faced Saes and used the Lignan ore's power to kill Rrogon. Druur then sent the Harbinger crashing onto the surface of the frozen moon below, destroying the ship and killing Druur.