Koloth, son of Lasshar

Captain Koloth was the Klingon commanding officer in charge of a space station and its battlecruiser squadron residing within wormhole space in 2285. Koloth orchestrated several incursions into Federation space with one incursion resulting in the destruction of the USS Gallant. When his space station was forced back into normal space due to sabotage, Koloth opted to destroy the station instead of surrendering.

This Koloth cannot be the same as the Klingon ship captain from 2267, as that man turned up alive on Star Trek: Deep Space Nine.