Kloog

From Memory Alpha, the free Star Trek reference.

Kloog was a drill thrall on the planet Triskelion. He was killed by Captain Kirk when the two fought each other in 2268. (TOS: "The Gamesters of Triskelion")

Kloog was played by actor Mickey Morton. Due to their similar appearance, it has been suggested that Kloog may be a Kaylar from Rigel VII; however, slight differences in his disheveled appearance, such as Kloog's thick eyebrows and longer teeth, have caused further speculation.