Durillia is the evil crocodile counterpart of Evershell. She agrees to tell Eva how to perform the Unfriendliness Ritual if she'll get her some of Kate and Magic's hair and the legendary Never Alone flower.
Once she does, Durillia explains that there's a secret place in the Evergrey Swamp called the Valley of No-One,where Eva must find two black communication shells, one for her and one for whoever goes to the Big City. When that's done, she's to throw the hair samples into the murky water and create her own spell. Only then will the ritual work.
She’s as wise as Evershell, but she’s evil and dislikes him. She’s ruthless, omninous and mysterious. She’s greedy as she only gives secret information in exchange for favors, unlike Evershell.