Golbat

Golbat is a Flying/Poison-type Pokémon that evolves from Zubat. It is marked as No. 042 in the National Pokédex.

Pokédex Data
When Zubat evolves into Golbat, it gains sight as it develops a pair of eyes with slit pupils. Most of Golbat's body is all mouth and it has four fangs: two on the upper jaw, two on the lower jaw. Female Golbats have slightly shorter fangs than the males.

Like the vampires of folklore, Golbats feed on the blood of their prey, whether that prey be Pokémon or human. A Golbat can consume up to ten ounces of blood in one feeding, though if it consumes too much it will become too heavy to fly.

Abilities

 * Supersonic - A disorienting soundwave that leaves the opponent confused.
 * Poison Fang - A powerful bite attack that inflicts the opponent with a potent toxin that saps health over time.
 * Mean Look - A sinister glare that goads the opposing Pokémon into staying in battle rather than fleeing.
 * Air Slash - Golbat strikes the opponent with a blade of air that inflicts moderate damage.

Evolution
Golbat may evolve into Crobat if it forms a close friendship with its Trainer.