This horrific, hulking beast is only barely humanoid, with large claws, warty skin, and a terrifying visage.

A whirlwind of teeth and claws, grendels are spawned by ketta and used by them to exact revenge upon all that is good. As fiends, they have an innate hatred of song and revelry; the grendel particularly so. It strikes in the dead of night, murdering as many humanoids as it can, greedily gulping down those it can eat quickly and carrying off any others for devouring later. These victims are shared with the ketta that spawned it, and in this regard the grendel regards the ketta as its “mother.”