Moon Biome

Moon Biome is an underground biome unleashed when the Eater of Suns is killed. It is very rare when first spawned, but it can spread like the Hallow, Corruption and Crimson, though it can never rise above the Cavern level. It is the most dangerous biome because it can take over any ore or liquid and turn it into Moonstone and Moonliquid respectively.

Appearance
The Moon Biome consists of Moonstone and has Hanging Moon Pearls. It has a bluish stone background and the water is poisonous.

Enemies
The following enemies can spawn:
 * Gravitant
 * Moon creeper
 * Teleporter

Boss
A Boss, Gravitron can be summoned using the Suspicious Looking Pearl which can be crafted using 15 Souls of Right, 15 Moon Pearls and 10 Demonite Bars.

Trivia

 * The Moon Biome can only spawn in Hardmode.
 * A Lunar NPC will spawn who will sell Moon Weapons and other items.