Chiroptera

The Chiroptera were a species resembling giant bats which guarded Hellmouth.

Biology
The Chiroptera resembled giant bats. They had dog-like teeth with vampire fangs capable of ripping open Dalekanium. They could fire psionic energy from their blood-red eyes to turn ships to dust.

History
The Chiroptera guarded the Hellmouth Wormhole, believed to lead to Nosfera II, home of the ancient Vampire Gods and their Vampire Weapon-Worlds. The Daleks travelled to the wormhole to see if the legends were true. The Dalek Fleet were ordered to fly through the Hellmouth, conquer Nosfera II and take control of the mythical Vampire Weapon-Worlds. As the fleet prepared to enter the wormhole, a hundred thousand Chiroptera came shrieking out. They tore the fleet to pieces, ripping open the Dalek casings and consuming the Kaled mutants within. The Daleks were soon reduced to dust, though legend says their screams could still be heard echoing through the Astral Fog. (DWBIT: #37)