White dragons, also known as ice dragons or glacial wyrms, were the weakest and most feral among the classic chromatic dragons. They were physically the smallest of the chromatic dragons and appeared in shades ranging from white to grey and ice-blue. In arctic environments, this appearance served as good camouflage.

White dragons were physically distinguished by several features. They had short necks and a flap of skin, called a dewlap, lined with spines beneath their chins. Their heads were very streamlined, and they had high crests atop their skulls. They had a crisp, vaguely chemical odor.

White dragon toes were spaced more widely than those of other dragons, with barbed claws that helped them move on ice. Their very thin eyelids prevented snow blindness while observing arctic landscapes.

When in the stage of being a wyrmling, white dragons had a less pronounced crest and small stubs where their future horns would be. They completely lacked the dewlap, and their bodies were protected by a leathery white hide in place of scales.

A dragon egg could be identified as belonging to a white by the greenish-white tinge seen when held in front of an intense white light. However, this trait was shared with green dragons and any dragon breed with a gas or vapor breath weapon.