Goth (Silverwing)

Goth is the main antagonist in the Silverwing book series. He is a giant cannibal bat.

Silverwing
Goth had been captured by humans along with another cannibal bat named Throbb, and they were both given bands. Goth was able to escape with Throbb's help but didn't understand the Northern stars and didn't know how to get home. He decided he would have to get a bat guide. He saves two bats, Shade and Marina, from an owl and pretends to be their friends, while in reality wanting to find Shade's colony and eat them. Goth commands Throbb to kill Marina after she becomes suspicious, but Throbb instead killed a bat he thought was Marina. Shade saw Throbb eat the bat and was able to escape from Goth with Marina when Goth and Throbb are tranquilized by humans.

Goth and Throbb escape and follow Shade and Marina. He eventually finds a colony of banded bats and eats them, taking their bands as trophies. He eventually captures Shade and Marina and attempts to get them to reveal the location of Shade's colony. However, Sgade is able to drug Goth and Throbb and they escape.

Goth wakes up and he, along with Throbb, chase after Shade and Marina and finds them in a electric tower. He takes Marina's band and just as he captures Shade, the electricity hits his and Throbb's bands and electricutes them, killing Throbb but Goth survives. After eating a bird he swears revenge on Shade and his colony.