You never see her face, but Cathy Munro played two different characters in The Empire Strikes Back. Bounty Hunter Zuckuss and the short Wiorkettle in Cloud City (who you’ll probably only see in Empire merchandise).
I also found this interview with Cathy Munro from the Lexington Comic and Toy Convention Video in 2017.
And here’s Cathy Munro’s personal website.
Check out the entire list of women in 365 Days of Star Wars Women in the Women in Star Wars Index. It includes highlights from each post plus notes which posts include new 365 interviews with actresses, writers, artists, and more.