Tonar was a large, muscular Klingon serving in the Klingon Defense Force in the 23rd century.
In 2265, Lieutenant Tonar was assigned to the IKS Zin'za as tactical officer. Under the command of Captain Kutal, he bombarded the planet Palgrenax with photon torpedoes to rid it of Shedai Sentinels. (VAN novel: Summon the Thunder)