Elfrun is a female elven archdruid that has been corrupted by the Broken Bones Coven who sealed her spirit to protect the coven in the Winterwald.
Elfrun used to to live in the Winterwald with her husband Siegbert and their 10 children. Her children were killed and reborn as hags, which killed Siegbert when they became adults, and Elfrun barely escaped. This trauma allowed the coven to take control on Elfrun's actions, and force her to protect them in the woods from any threats.