A yellow-skinned thrall on Triskelion who is given the task of training Ensign Chekov for the Providers' games and takes an enthusiastic liking to him.
Tamoon is a drill thrall on Triskelion in the second-season Original Series episode The Gamesters of Triskelion. The part was played by Jane Ross.
After Kirk, Uhura and Chekov are snatched from a transporter beam and fitted with collars of obedience, each is handed over to a trainer. Tamoon, a deep-voiced and powerfully built woman of an unnamed species, is assigned to Chekov. She assures him cheerfully that she will teach him well so that the Providers do not have him destroyed.
She also informs the alarmed ensign that she has been chosen as his mate. Chekov later takes advantage of her trust to overpower her during the landing party's brief escape attempt. Like the other thralls, she is set free to learn self-government once Kirk wins his wager.