An Enterprise yeoman in 2267 whom the capricious being Trelane dressed in a ball gown and made his dancing partner on Gothos, giving Kirk a pretext to provoke him into a duel.
Yeoman Teresa Ross appears in The Squire of Gothos. She is on the bridge when Trelane, having lost his first set of captives, transports the senior officers to his drawing room for a banquet, and she is swept along with them.
Trelane is delighted to have a woman to play the gallant to. He waltzes her about the room while Uhura is made to play the harpsichord, and with a gesture changes her uniform into an elaborate period gown, likening her to Helen of Troy.
Kirk uses the situation, feigning jealous outrage and slapping Trelane with a glove. The resulting duel lets him destroy the mirror that hides Trelane's machinery. Ross returns to duty still in the gown. She was played by Venita Wolf.