American actor (1924–2013) who played Galt, the Master Thrall, in The Gamesters of Triskelion and returned for roles in Deep Space Nine, Voyager, Enterprise and Star Trek: Insurrection.
Joseph Ruskin was an American character actor, born in 1924, with a deep voice and a long list of television credits including The Twilight Zone and Mission: Impossible.
In the second-season Original Series episode The Gamesters of Triskelion he played Galt, the cowled overseer who trains Kirk, Uhura and Chekov as gladiators for the Providers. Decades later he played the Klingon Tumek, adviser to the House of Grilka, in the Deep Space Nine episodes The House of Quark and Looking for par'Mach in All the Wrong Places, and a Cardassian informant in Improbable Cause.
He also appeared as a Son'a officer in Star Trek: Insurrection, a Vulcan master in the Voyager episode Gravity and a Suliban doctor in the Enterprise pilot Broken Bow. He died in 2013.