Kaaj, son of Torg

Kaaj, Son of Torg was the Klingon commander of the battlecruiser IKS Varchas during the 2250s, despite having a crippled left arm since birth. In 2254, Kaaj launched attacks on Starbase 13 to drive the Federation off Pharos and gain the planet's dilithium reserves. He was thwarted by Captain Christopher Pike of the USS Enterprise, who destroyed the reserves to keep them out of Klingon hands. Kaaj swore a blood oath against Pike, and tried to kill him later that year. (EV [comic]]: "The Fires of Pharos")