Editing Terraria (section)

===Prehardmode===
* King Slime: It's a ''big'' fucking slime. Kill it and you're rewarded with a piece of the Ninja outfit. It spawns little slimes as you hit it. Great for getting early game gold. It is unique in that it has two spawn conditions: either very rarely on the outer edges of the world or after killing 150 smaller slimes during a Slime Rain. Very likely to be the first boss the player encounters if a Slime Rain occurs before the Eye of Cthulhu spawns for the first time.
* Lepus: An old boss from the old Mobile version, now only fightable on 3DS. Summoned with a Suspicious Looking Egg. Notoriously spawns more of itself during its fight, which can get very annoying - killing it fast is recommended. Drops its own boss item too, since Diseaster Bunnies no longer spawn and Corrupt Bunnies no longer drop the Egg as soon as it dies.
* Eye of Cthulhu: A giant eyeball ripped straight from Cthulhu's socket that eats people. It also spews out smaller Eyeballs. Will drop either Crimtane or Demonite ore depending on how the world was generated. Farmed for ore. It spawns at night after a certain amount of progression is reached (200 HP, 4 town NPCs, and 10 defense) if it hasn't been killed already. Typically the first boss a player will encounter unless a Slime Rain happens first.
* Eater of Worlds: A game of centipede gone wrong. The Corruption boss. Each segment has its own health pool, and you'll need to kill all of them. And that's a hard task because it'll split into more of itself if you cut it in two. Drops Shadow Scales and Demonite Ore, and farmed for both. 
* Brain of Cthulhu: A flying brain that amalgamated with the gross shit around it after being torn from its original owner, with tons of miniature eyeballs surrounding it. The Crimson boss. It will only reveal its weak point ([[What|a heart with an eye]]) when all the eyeballs are gone. Tougher than the Eye of Cthulhu by virtue of the fact that the first time you fight it will likely be underground. The eyes are the biggest rewards as they are the only enemies that drop Tissue Samples to make Crimson gear. Farmed for Tissue samples and Crimtane ore.
* Queen Bee: A giant motherfucking bee, what else need be said. It can drop weapons which shoot BEEEEES, parts of the bee outfit, and the rarest pre-Hardmode pet. [[Derp|The only boss whose summons are non-renewable without creating multiple worlds or mods]] - those being larvae found in beehives in the Underground Jungle, or the Abeemination item.
* Skeletron: You have to kill it to go into the dungeon (well, without [[rape|encountering a Dungeon Guardian]]). It's huge and you need to kill it before dawn, or you ''die''. Will smack you with bony hands and ram its skull into yours. Summoned at the dungeon entrance by invoking the Old Man's curse at night, or stabbing his Townfolk version, the Clothier, to death using the Clothier Voodoo Doll at night. Previously optional, but now required if you want the Lunatic Cultist fight to be accessible.
**While technically not a boss, the Dungeon Guardian can be considered a superboss-like enemy due to its ridiculous defense (''all'' attacks against it are reduced to 1-2 damage) and large healthpool (9999 HP on normal difficulty). Killing one invariably requires you to know what you're doing, prepare, and have some luck on your side, since otherwise [[Anal circumference|it's going in dry]]. If you manage to whittle it down completely, it drops the hardest-to-get pet in the game. The most reliable (and safest) method for taking it down requires abusing intentional collision logic with a little thing called a Hoik, which says a lot about how easy it is for it to kill you under normal circumstances.
* Deerclops: A crossover boss from Don't Starve, and the only boss for the Snow biome. A giant bipedal deer monster with a single eye, it spawns at night during a blizzard if the player is considered strong enough (200 hp, 9 defense) and there aren't any townsfolk nearby. Drops items relating to the crossover.
*Turkor the Ungrateful: Another old boss from the old Mobile version, now only in the 3DS version. Summoned by using Cursed Stuffing on a pet Turkey, angering PETA in the process. [[Meme|In Soviet Russia, turkey eats you.]]
* Wall of Flesh: The boss of hell is an inescapable nightmare that takes fuckhuge amounts of firepower to bring down. Summoned by <s>releasing it from its vessel via</s> sacrificing the Guide to the Underworld's lava, either directly by [[meme|Sparta kicking]] him in or indirectly via a Guide Voodoo Doll. Killing it gives the player the Pwnhammer that can destroy Demon Altars which create Deposits of Hardmode Metal for each Altar broken by it at the cost of spawning Wraiths and allowing the Mechanical Bosses to spawn. Farmed for various accessories. Also irreversibly starts Hardmode, obviously. Will instakill you if you let it reach the edge of the world or if you try to escape using teleportation.