Thyssen is probably best remembered for her appearances in the Three Stooges films Quiz Whizz, Pies and Guys and Sappy Bull Fighters. In her brief stint with the Stooges, she endured a cream pie to the face in the second film. From 1956-1958, Thyssen was the original Pirate Girl on the game show Treasure Hunt, assisting host Jan Murray with presenting prizes hidden in miniature treasure chests. After appearing in the musical comedy Cottonpickin' Chickenpickers (1967), she retired from acting.