This man-sized, slavering wolf has the glint of feral intelligence in its eyes.
Fenrir is a child of Loki and his children are numerous.
Like the original, fenrir grow rapidly upon eating. They are fond of swallowing creatures whole and it is written that one day a fenrir will grow so large it will swallow the sun.
The only way to truly defeat a fenrir is to confine it, something few are willing to do given the possibility of losing life and limb.
Children of Jotunheim. Only in Jotunheim could creatures like fenrir to flourish; only jotun could decisively deal with them so that they do not grow to monstrous proportions. A fenrir on Midgard can threaten to swallow the sun if given enough corpses to eat.