While working closely with Jim Henson and Frank Oz on various projects at the Henson Studios, Froud was asked by the pair to join the team responsible for developing and building the character Yoda for the 1980 Star Wars film The Empire Strikes Back. Her contribution included sculpting the prototype puppet for Yoda. Nick Maley, who worked on Yoda with Froud under Stuart Freeborn, recalled that "Wendy’s contribution creating the character was second only to Stuart who was overseeing all the creatures.
While working closely with Jim Henson and Frank Oz at the Henson Studios, Froud was asked by them to join the team responsible for creating and building Yoda for The Empire Strikes Back. Her contribution included sculpting the prototype puppet for Yoda. Nick Maley, who worked on Yoda with Froud under Stuart Freeborn, remembered that "Wendy’s role in developing the character was second only to Stuart, who was overseeing all the creatures."