Unidentified Chiropteran (Transformers)

The "Chiropterans" are an unnamed race of bat-like creatures from the planet Cybertron.

Biology
The Chiropterans are organic bat-like creatures that scale around the same size as Humans.

History
The Chiropterans lived on Cybertron roughly many centuries ago, their existence predating the Cybertronians. However, they later went extinct due to unknown causes.

Judging from Nightscream's beast mode, the Chiropterans had grey skin and a long, pointy nose. They could also apparently emit a super loud screech.

Appearances

 * Beast Machines: Transformers episode 10, "Survivor" (1999)