The Tavleks are a race of aliens that use a weapon called the gauntlet. Bekhesh was the well known leader of a mercenary group of Tavleks encountered by Moya.
Terry Ryan explained that "the idea for the Tavleks was that they came from their own army once, but they don't have a home. Basically, they're a transient nomadic species that go from one place to another just looting and getting everything they can." ("Farscape Chronicles" - Starburst Edition DVD v1.1)