Yeto

From Memory Alpha, the free Star Trek reference.

Yeto was a 24th century Klingon mercenary. In 2370, Yeto and T'Kar were hired by Verad, to steal the Dax symbiont from Jadzia Dax. They traveled to Deep Space 9 aboard the Ekina. He was assigned to guard Julian Bashir in the infirmary, but was finally knocked out by Bashir. (DS9: "Invasive Procedures")

Yeto was played by Steven Rankin.