Gwilanna is a sibyl, who is first introduced in The Fire Within. She is only seen in David's dream where she joined David to Gadzooks in water, and advised him to join Gadzooks in fire. In Icefire, she is given a larger role as Elizabeth "Liz" Pennykettle's 'Aunty Gwyneth'. She wanted to raise Grockle as a dragon baby instead of a normal baby boy, but the plan was later foiled when she could not drain the auma from Liz's body into the dragon's.