Toral

Toral, son of Duras, was a Klingon warrior in the 24th century and a member of the House of Duras. He was the illegitimate son of Duras, kept in the custody of his aunts Lursa and B'Etor. He was likely named for his 22nd century ancestor. The 24th-century Toral was used by his aunts in an attempt to gain control of the Klingon Empire. After it was revealed that the House of Duras was receiving help from theRomulans during the Klingon Civil War, Toral's claim was severed, and he was convicted of treason. Gowron offered to let Worf kill the boy, but Worf refused, unwilling to kill him as he was only a pawn of his aunts. (TNG: "Redemption", "Redemption II")

Toral attempted to take over the Klingon Empire again in 2372, this time on his own, as his aunts had been killed in the Battle of Veridian III the prior year. He met the Dahar Master Kor onTorna IV, where Kor drunkenly told him he had discovered theShroud of the Sword and that it would lead him to the Sword of Kahless. Toral sent Soto, a Lethean, to probe Kor's mind onDeep Space 9. Using the information Soto retrieved, Toral traveled to the Gamma Quadrant where Kor discovered the sword. Toral believed that if he could wield the sword he could take over the Empire. The sword was later jettisoned into space, thwarting another attempt of the House of Duras to conquer the Empire. (DS9: "The Sword of Kahless")

In the computer game Star Trek: Armada, Toral returns in yet another attempt to take over the Empire, but is defeated by Sela with help from the Borg and is killed.