Jadar

Commander Jadar was a Klingon who served the Empire's Defense Force as a starship captain, in command of Jadar's battlecruiser in the 2270s.

History
In the 2270s, Jadar's battlecruiser was chosen to test an experimental gravitational field weapon, a device which produced a substantial gravitational field comparable to a small quantum singularity.

After USS Enterprise (NCC-1701) was snared within the gravity field, Jadar gloated at Captain James T. Kirk, pleased to have caught the famous starship commander. Unfortunately, a blast of antimatter destroyed the weapon and heavily damaged his ship.