Star Trek III Search for Spock, whatever happened to the last surviving Klingon? Kirk threatened to kill him if he refused to help cooperate to move the stolen ship away from the exploding planet. He refused and was later locked up. After that we never see him or hear of him.

Is he still in the brig the whole time including The Voyage Home, in which case he drowned when the ship sank? Or is he still on Vulcan as a permanent resident? I have no doubt his honor is ruined because he was captured shamefully and never had the opportunity to defend or die trying.