Had to remind myself who middle left was. Parell from DS9 s5e22 “Children of Time.”

Weird how often someone’s existence is simply erased in the various Trek timelines.

Do bottom right and top right count? I mean, I’m pretty sure top right does, less sure about bottom right given the extent of procedures
They still count. Voq/Ash Tyler from DISCO is Klingon “at heart,” just wildly altered and brainwashed.
Klingons of Theseus
What happened? Some kind of genetic engineering?
Top left is the result of a failed enhancement virus whose cure left a large portion of the population without ridges. A weird means to explain the transition from TOS to TNG Klingons.