Surtur was depicted as an immense and malevolent elemental fire demon whose power was of apocalyptic proportions. Standing over 1,000 ft. in height, Surtur possessed strength and durability far surpassing that of Thor; the ability to generate intense heat, flames or concussive force; molecular manipulation such as transforming his fingers into serpents; levitation and inter-dimensional travel. Surtur's scale of power is usually shown to equal that of Odin. He is a skilled warrior and swordsman, and has a prehensile tail. He possesses a great intellect, and has vast knowledge of ancient and arcane wisdom. He is vulnerable to intense cold, and can be imprisoned by certain magical spells or by other beings wielding cosmic energy powers equaling his own.