Charal was a witch (retconned into a Nightsister from Dathomir) in the 1985 TV movie Ewoks: Battle for Endor. She also appeared in the comic Star Wars: Ewoks – Shadows of Endor, the children’s book The Ring, the Witch, and the Crystal: An Ewok Adventure, and MMORPG game Star Wars Galaxies.
Actress Siân Phillips played Charal in Ewoks: The Battle for Endor. Marianne Horine played a younger version of Charal in the same film. You can read all about Charal’s history on her Wookieepedia page (which is also where I found the two images of her which were by far better than anything I could find anywhere else).
There’s also quite a bit of Charal in the Battle for Endor trailer below.
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.