Vinteralf

A monster first described in 01 Stellarium of the Vinteralf and also appearing in 10 Circle of Wolves.

Glacier-dwellers from the far north. 6' tall, seal-faced and bull-headed, muscular and wrapped in blubber. Inventive and determined in battle.

In 5e Dungeons & Dragons

The stats for white-dragon dragonborn probably work reasonably well, possibly even including a breath weapon (in this instance, fire, since other things in the cold won't care).