Bat

A bat is a pre-War creature that lived in Appalachia.

Background
Bats that lived before the war utilized echolocation on a limited scale. After the war, Chiroptera species of bats were exposed to biochemical tests conducted in the Enclave bunker, mutating into creatures known as scorchbeasts. Ella Ames makes this hypothesis, noting that they may have evolved from pre-War pygmy bats.

Former Cutthroats member Carol Sweeney writes about these evolved creatures in their journal, stating that on their way to scavenge in Big Bend Tunnel East, they saw giant bats flying out the ground, and that they were no longer planning on going to that location for scrap.

Appearances
Bats are mentioned in Fallout 76.