Bat

Bats were winged, nocturnal creatures that tended to roost in caves or dark forests.

History
Bats were apparently quite common in the northern parts of the Whispy Woods. As Finn Cooper wandered through the Weeping Willow, he heard the squeaking of bats in his ears so often that it ceased to startle him.

Bats were most famous for taking the part of the goblins during the Great War, in which they served as aerial mounts. They flew together in "great black clouds" over the battlefield, so densely that no light escaped between their wings.

One of them collided with a gryphon, which caused both of them to fall down to the ground and die.