Groyat, the Blind Hunter

Groyat, the Blind Hunter is a giant albino bat in Razorfen Kraul. It appears that the reclusive Blind Hunter has at last surfaced from the darkest reaches of the cave to feed on the corpse of the recently slain Agathelos. Speculated to be blind as its name suggests, it emits sonic pulses to detect trespassers and prey.

Adventure Guide
''After years of seclusion, a monstrous creature from deep inside the dark grotto emerged. This gargantuan bat continually feeds on the boar once named Agathelos the Raging, whose dark power was once fueled by continual consumption of bat guano.''