The Arctic Profeser indroduced in Icefire. He is the one who allowed Zanna and David Rain to go to the arctic. Bergstrom is the owner of the dragon Groyne who is animated and can turn invisible or change shape and form from dragon (more birdlike then the pennykettles') to a narwhale tusk talisman. In Fire Star Bergstrom was willing to use force to defeat Gawain in Fire Star if Gwillana suceeded in bringing Gawain alive (which she didn't because Fain interfered). Bergstrom was lost in the Arctic near the middle of Fire Star. He did not appear in The Fire Within, Fire Eternal, or Dark Fire.