In the comics, he appears as a large, muscled, bipedal, furry white creature, pointed teeth, red eyes and claws, most often with long white hair.
The wendigo was first encountered in Incredible Hulk issue #162. In this incarnation, the wendigo inhabits the character Paul Cartier after he eats his dead friend's body to keep from starving on a camping trip in Canada.
There are a total of 12 different incarnations of the wendigo throughout Marvel comics. It appears in The Incredible Hulk several times, as well as Captain Marvel, Wolverine, Sabertooth, and others.