Lady Proxima was the leader of the White Worms on Corellia in Solo: A Star Wars Story. Her character was a crime boss who employed a young Han Solo and Qi’ra. She also appeared in the Solo prequel novel Most Wanted.
You can learn a little bit more about Lady Proxima in this video about the creatures from Solo: A Star Wars Story from Star Wars Explained.
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.