Ratatosk

From a hidden burrow somewhere in the boundless expanse of the World Tree's mighty trunk, Ratatosk presides. Though he chooses to surround himself by the eldest and most honoured of his squargon brood, the Guardian's verminous agents ceaselessly patrol Yggdrasil's trunk and branches, often catching the unwary off guard with their ferocity. The lair of the Guardian can only be entered by those with the fortitude of heart to conquer a tithe of Yggdrasil's many dangerous challenges.

"The hunter never sleeps, his victory only serving to ensure yet more quarry."