Monsters

There are many different types of enemies in the world of Terraria, ranging from the lowly Slime all the way to bosses like Skeletron. Some enemies only appear at night, such as zombies, while some appear during the day, like slimes. Some bosses can be summoned. All of them are slightly dangerous, so watch out!

The Corruption monsters

 * Devourer
 * Eater of Souls

Dungeon monsters

 * Angry Bones
 * Burning Skull
 * Dark Caster

Underground Jungle monsters

 * Hornet
 * Man Eater

The Underworld monsters

 * Bone Serpent
 * Fire Imp

Goblin Army spawns

 * Goblin Warriors
 * Goblin Sorcerers
 * Goblin Thieves
 * Goblin Peons

Others

 * Demon Eye
 * Giant Worm
 * Meteor Head
 * Skeleton
 * Slime
 * Green Slime
 * Blue Slime
 * Purple Slime
 * Red Slime
 * Yellow Slime
 * Black Slime
 * Mother Slime
 * Baby Slime
 * Pinky
 * Zombie

Bosses

 * Eye of Cthulhu
 * Servant of Cthulhu
 * Eater Of Worlds
 * Skeletron
 * More to come in the following months