Dunstan was a kindly giant originally from Hibestian Range. He met Kuzgu who pretended to be his friend invited him to live in Sorrowing Court and keep it as his own. While Dunstant lived at the court he began to feel much sadness, and Kuzgu tricked Dunstan into imprisoning Ahi'aorina in the castle as he was told it would help bring happiness to Dunstan and the court. This resulted in unbalance in nature causing winter to continue in the land. Both Dunstan and Ahi'aorina's energy was being fed upon by Kuzgu, causing a deep melancholy in Dunstan, and almost killing Ahi'aorina. Later he learned about Kuzgu's treachery and that Karn Megiddo was behind the plot, and was collecting their energy so that he could become the most powerful wizard in the world. The Queen, Dunstan, and a few other allies were eventually rescued by King Graham.
Giants from the Hibestian range have a unique ability of creating sparks by rubbing their beards between their hands. Dunstant used this ability to create a fire for his new friends after the escape from Sorrowing Court.