Maltz

Maltz was a male Klingon who lived in the 23rd and 24th centuries.

As a young man, Maltz was an officer in the Klingond Defense Force, serving on board Commander Kruge's Bird-of-Prey. When the ship was taken by then Admiral James T. Kirk, Maltz was taken prisoner. (Star Trek III: The Search For Spock).

It was believed after the incident that Maltz had committed suicide. (TOS novelization of Star Trek IV: The Voyage Home). However Maltz had survived as a prisoner of the Federation. During his imprisonment, Maltz assisted Federation linguists in learning even more about the Klingon language. (ST Reference Book The Klingon Dictionary).

Maltz eventually returned to the Klingon Empire. For many years he struggled with the shame of being defeated by Admiral Kirk. When the Genesis Wave was propelled through the Alpha Quadrant, Maltz emerged to help track the wave to its source. Shortly before his death, he met Carol Marcus, the mother of David Marcus - who had been killed at the order of Kruge many years before. Maltz died holding Carol Marcus while the space station they were on self-destructed, ensuring that the knowledge of Genesis that Marcus had could never be used again. (TNG novel The Genesis Wave).