Hellcow, one of Marvel’s lesser-known characters, first appeared in a comic book in 1975.
Bessie, a prized cow living on a farm belonging to a Swiss farmer named Hans, falls prey to Count Dracula after he can’t find any humans to feed on.
After her vampire transformation is complete, Hellcow’s abilities include shifting into a half-cow, half-bat creature.
A mad scientist named Dr. Kilgore believed her vampiric milk could cure his tuberculosis and give him immortality.