Eater of Souls

The Eater of Souls is a hostile monster found prominently in The Corruption (though once found, it will follow fleeing players into non-corrupted areas). It flies in an arc-like pattern, similar to Demon Eyes, and will bounce off of any solid objects that it touches. It closely resembles the Big Eater and Little Eater, due to them being in the same monster family.

The Eater of Souls can spawn from either Ebonstone or corrupted Dirt, with large groups usually coming from Chasms. Since an Eater of Souls can cause a lot of damage, and due to the fact that they tend to spawn in groups, newer players are advised to avoid The Corruption until they obtain more powerful weapons and defense.

On death, an Eater of Souls has a chance to drop Rotten Chunks which, when combined with Vile Powder at a Demon Altar, creates Worm Food to summon the Eater of Worlds, which is a Corruption-themed boss monster.

The Eater of Worlds is a tunnelling boss monster with many individual body components, each resembling an Eater of Souls. The similarity in names suggests that this was a deliberate decision.

In addition, once you have collected 5 rotten chunks, you can make Leather at a crafting table, which is used for certain vanity items.