Bosses are aggressive, resilient enemies that offer a substantial challenge to players. Defeating a boss is usually instrumental in advancing the game in some way or another, for example, granting the player a new material for a pickaxe of a higher tier. Each has its own particular way of being summoned. For example, most bosses have associated summoning items that can be used to spawn them manually under certain conditions, while there are others that will appear after the player interacts in a certain way with the environment. Event bosses will only appear during their respective events and leave when the event ends. Mini-bosses also exist and appear only during special events, expressing the same amount of difficulty as many normal bosses. Their health has a huge range. On Classic Mode it ranges from 2,000 to 145,000.
For all non-event bosses, with the exception of the Lunatic Cultist, status messages will appear when that boss is about to spawn or has already spawned. Upon spawning, its particular theme music plays. During events, bosses and mini-bosses can appear multiple times and have no distinct spawn message. In the case of wave events like the Pumpkin and Frost Moons and the Old One's Army, status messages that appear at the start of each wave can indicate whether or not a certain boss or mini-boss will appear. Defeating a non-event boss concludes with a congratulatory message and several reward items.
On the Desktop version, Console version, and Mobile version, bosses will appear on the minimap, each with an individual map icon. On the Desktop version, a boss health bar will appear at the bottom of the screen (it will only show the health of the most recently-attacked boss, if there are multiple).
- However, bosses will still appear as the standard purple blob that signifies enemies on the Old-gen console version.
- 1 Pre-Hardmode bosses
- 2 Hardmode bosses
- 3 Event bosses
- 4 Old-gen console version and 3DS version exclusive
- 5 3DS version exclusive
- 6 Notes
- 7 Achievements
- 8 History
These are the first bosses the player can encounter. Usually, defeating one of these bosses will give the player items and materials necessary to progress in the game, eventually leading to Hardmode. Although there are 7 pre-Hardmode bosses, only 6 can spawn naturally in a world, as the Eater of Worlds is exclusive to worlds containing Corruption, and the Brain of Cthulhu is exclusive to worlds containing Crimson. As of version 18.104.22.168, the Hardmode Dryad can sell opposite evil's seeds, allowing one to be able to fight every boss on every world.
King Slime is a giant blue slime with 2000 / 2800 / 3570 health. It is summoned with a Slime Crown, after killing 150 slimes during a Slime Rain, or can also rarely appear in the outer thirds of the map completely by itself. As with all enemies that can spawn naturally, the King Slime has a better chance of spawning while standing near a placed Water Candle or while under the effects of a Battle Potion. King Slime is a good challenge for a beginning player, and can be easily defeated by tactical use of terrain.
The Eye of Cthulhu is a monstrous unholy eyeball with 2800 / 3640 / 4641 health. It has a 1 in 3 chance of spawning at the beginning of each night once the player has 200 HP or more, 3 or more NPCs living in houses, and over 10 defense. It will continue to do so until defeated for the first time. It can also be summoned using a Suspicious Looking Eye (found in underground chests) at night. If not defeated by the player by the end of the night, it will travel upwards and despawn. This is generally the first boss a player must face. It travels through blocks, and spawns Servants of Cthulhu.
In Expert Mode (and Master Mode), the Eye of Cthulhu will do a fast chain dash in its second phase, using the attack more often the lower health it has. The chain dash attack will also scale in aggressiveness the same way. This can lead to it dashing almost continually at high velocity at very low health, making it especially difficult for players in the early game to finish it off.
The Eater of Worlds is a colossal blighted worm with 7485 / 10479 / 13361 health in total. It awakens after every third Shadow Orb is broken or after Worm Food is used. Shadow Orbs are found in the Corruption chasms, surrounded by Ebonstone, which requires a Pickaxe with 65% power or higher to mine, although explosives or Purification Powder can be used to bypass this. Once within range, Shadow Orbs can be destroyed with a Hammer or explosives. The Eater of Worlds can only be summoned in worlds containing Corruption, and can be summoned at any time of the day. If it manages to escape the Corruption, it will flee and disappear.
The Eater of Worlds can be a challenge even for intermediate players, as it is a large worm-type enemy that travels through tiles, and is made up of multiple sections that can each attack separately (with separate heads, no less) when they are cut off. To defeat this boss, every section must be brought down to less than two body parts to be killed (the smallest possible section is a head and a tail with no body pieces). Due to how helpful corrupted items are, this will probably be the second boss faced in worlds that have Corruption, rather than those who have Crimson.
Eater of Worlds is the only source of Shadow Scales in the game, and drops a large amount of Demonite Ore. They can be combined to make Shadow Armor, but it can also be sold for almost
100000*10 per stack of 99, making this technically the best pre-hardmode boss for farming in the game.
The Brain of Cthulhu is a writhing cerebral mastermind with a mere 1000 / 1700 / 2167 health, giving it the lowest amount of health out of any boss. It appears after every third Crimson Heart is broken or after a Bloody Spine is used. Crimson Hearts are found in the Crimson's chasms, surrounded by Crimstone, which can be bypassed with the same methods Ebonstone can. However, some of the pockets containing these will generate open. Once within range, Crimson Hearts can be destroyed with a Hammer or any tile-breaking explosive. It can only be summoned in the Crimson and can be at any time of day.
The Brain of Cthulhu has two forms. In the first form, the brain cannot be harmed, and Creepers will float around it. After all of these are killed, the Brain of Cthulhu will go into its second form, where it will teleport more frantically and move a lot faster, so a ranged weapon may be needed. The Brain of Cthulhu's second attack form is ramming, like the second form of Eye of Cthulhu. Unlike most other bosses, the Brain of Cthulhu is not immune to knockback.
The Brain of Cthulhu is the only source of Tissue Samples in the game (other than the creepers spawned while fighting it), and drops a large amount of Crimtane Ore, which are their equivalents to the corruption items Shadow Scale and Demonite Ore respectively.
In Expert Mode, the Brain of Cthulhu will have more health, and in its second phase, it will start creating illusions of itself to charge at the player. The lower the Brain of Cthulhu's HP gets, the illusions become much less obvious to the point where they will look exactly like the real Brain of Cthulhu. However, the minimap icon will still show the real Brain of Cthulhu, allowing players to bypass this.
Queen Bee is a relentless maternal monarch with 3400 / 4760 / 6069 health. She is summoned by destroying her larva, encased within the walls of Bee Hives located in the Underground Jungle. She can also be summoned by the use of an Abeemination anywhere in the Jungle biome. She is the only source of Bee Wax. Queen Bee is immune to knockback.
Queen Bee alternates between charging at the player, hovering above them whilst spawning bees, and moving left and right whilst shooting stingers. In Expert Mode, the rate at which she charges the player gets faster as she takes damage.
Defeating Queen Bee will allow the Witch Doctor to spawn; other than this, she doesn't advance the game in a major sense, but she does provide some decent loot that can further help the player prepare for the boss battle against the Wall of Flesh. One such weapon is the beenade that is extremely effective when fighting the Wall of Flesh.
Skeletron is an enormous accursed skeleton with 4400 / 8800 / 11220 health. It is summoned by speaking to the Old Man NPC at the entrance of the Dungeon and activating his curse at night. Skeletron will alternate between attacking the player with its hands and performing a spinning attack. Its hands can be attacked and defeated to make the battle easier, although this is not required. If it has not been defeated before the night is over, Skeletron will attack and kill the player in one hit, despawning afterwards.
Defeating Skeletron will stop the Dungeon Guardians from spawning, allowing free access to the Dungeon. It can be summoned again by killing the Clothier with the Clothier Voodoo Doll equipped at night.
In Expert Mode, the fight substantially increases in difficulty. In the first phase, Skeletron's head is more resistant to damage until its hands are destroyed. Once they are destroyed, it will start shooting homing skulls at the player. Expert mode Skeletron is much faster. Its hands inflict the Slow debuff, and its head inflicts Bleeding. If the player gets caught by its head-spin attack, Skeletron can "stun lock" them, and often kills very quickly unless the player can grapple out.
The Wall of Flesh is a horrific, towering demon lord with 8000 / 11200 / 14280 health. It is awakened by throwing a Guide Voodoo Doll into a pool of lava while the Guide is alive. It is known by most players as the most difficult Pre-Hardmode boss. It is also considered the final boss of Pre-Hardmode, because by defeating the Wall of Flesh it will irreversibly enable Hardmode in that given world. Its defeat will also allow the creation of the summoning items for various Hardmode bosses. It can drop several powerful items, one of them being the guaranteed drop Pwnhammer which can be used to break Demon Altars or Crimson Altars in order to spawn various game-advancing Hardmode Ores, including: Cobalt or Palladium, Mythril or Orichalcum, and Adamantite or Titanium.
Upon summoning the Wall of Flesh, the player will be afflicted with the Horrified debuff, which prevents fleeing from the battle - any attempt to do so will result in severe damage via The Tongue or instant death if the player tries to teleport away. The Wall of Flesh will then sweep across the map, moving faster as its HP gets lower. It must be killed before it reaches the end of the map, otherwise it will despawn and any living players in the Underworld will die instantly. Additionally, the Wall of Flesh's eyes fire lasers, the fire speed increasing as it is damaged, its mouth burps Leeches that will chase the player, and it has small mouths attached to it called The Hungry, which will also move toward and damage the player.
In Expert Mode, The Hungry will rapidly respawn, and the Wall of Flesh will greatly increase its movement speed when it has 500 HP remaining, matching the full speed of Hermes Boots, so it is advised to wear the Lightning Boots or its upgrade Frostspark Boots while fighting him in Expert Mode. The Hungry that quickly respawn will seemingly block the wall from attacks and can deal quite a bit of damage themselves. The faster the Wall of Flesh moves and the quicker the The Hungry respawn, the more the player will have to focus on dealing damage and moving across a decent terrain. This can prove to be difficult to some players.
Hardmode bosses are significantly harder upgrades of and new additions to previous bosses. Defeating them is usually instrumental in advancing the game in some way. Each has its own particular way of being summoned, and warning messages appear whenever one is about to appear. Defeating a boss concludes with a congratulatory message and several items.
During Hardmode, each night has a 10% chance of spawning one of the three mechanical bosses that have not yet been defeated in the current world. This only happens after removing at least one Altar from the world, so it may be advisable to refrain from doing so if the player is not ready for a challenging fight. A recommendation for early hardmode is to challenge the Queen Slime. It is essentially a harder variant of King Slime, and allows for upgraded equipment. However, the fight is entirely optional, and not required for progressing the game.
After the defeat of the three mechanical bosses, the underground jungle begins to spawn Plantera’s bulb. Taking action against these bulbs will promptly spawn Plantera, a plant-like boss inspired by an indie rock band. At the end of the battle, the player receives the Temple Key, which can be used to open the Jungle Temple to combat Golem, gains access to the hardmode dungeon, and Prismatic Lacewings begin to spawn in the hallowed biome, which summon the Empress of Light. Following Golem's defeat, the Cultists spawn outside the dungeon, effectively opening up the path towards Moon Lord, which is considered the final boss of Terraria. It is also recommended to take on Duke Fishron at this time, although available at the start of hardmode via the Truffle Worm.
Queen Slime is a majestic Hallowed slime with 18000 / 28800 / 36720 health. It is available to battle at the start of hardmode, and is summoned in a Plantera-like method from Gelatin Crystals in the Underground Hallow. It is an optional boss fight and small gap to challenge before facing the mechanical bosses, warranting equipment upgrades and other items. There is a very strong resemblance to the pre-hardmode boss King Slime, and is one of two hallowed bosses featured in the game. While its first form is straightforward with attack patterns similar to that of King Slime’s, the second phase poses much more of a threat and the boss begins to fly in the air, shooting Crystal Slimes and projectiles from above.
The Twins are a pair of cybernetic Eye of Cthulhus. They exist as two individual entities, known as Retinazer and Spazmatism, with the former having 20000 / 30000 / 38250 health and the latter having 23000 / 34500 / 43987 health. They are the Hardmode counterpart of the Eye of Cthulhu. Unlike the Eye of Cthulhu, they do not immediately transform at half health - Retinazer transforms at 8000 health and Spazmatism transforms at 9000 health. These values are increased in Expert mode. The Twins are summoned using a Mechanical Eye at night. It is worth noting that The Twins will gain defense in their second forms, unlike the Eye of Cthulhu.
The two eyes have different fighting styles. Retinazer focuses on shooting the player with Death Lasers like the Destroyer's Probes. Once it reaches its second form, it will replace its pupil with a laser cannon. During this form, it will shoot lasers extremely fast, sometimes having the same fire rate as a Megashark.
The other eye, Spazmatism, focuses on slamming into the player and firing cursed flames. Once it reaches its second form, it will resemble a mechanical version of the Eye of Cthulhu's second form. It will deal a lot more damage, and the flames it shoots are more consistent like the Flamethrower instead of the Cursed Flames, but the flames will still inflict Cursed Inferno debuff on the player. The last Twin destroyed will drop all of the loot.
In Expert Mode Spazmatism's charging attack will be similar to the Eye of Cthulhu's chain dash ability in its second form, and Retinazer will shoot lasers almost as rapid as the Wall of Flesh at 500 health.
The Destroyer is a colossal mechanized Eater of Worlds, with a whopping 80000 / 120000 / 153000 health. It is the Hardmode counterpart of the Eater of Worlds. It is considered the easiest Hardmode boss by many players, despite having the second-highest health. Although it is similar to its pre-Hardmode counterpart, the Eater of Worlds, it has some key differences: it won't divide into smaller segments, will shoot lasers from its body if space is available, and will deploy Probes to attack.
The Destroyer is summoned by crafting and using a Mechanical Worm anywhere, but can only be spawned at night. The Destroyer will shoot Death Lasers, increasing in attack speed as it loses health. Weapons that do damage to multiple segments like Flails, Daedalus Stormbow, and the Demon Scythe are recommended, because they will hit multiple sections of The Destroyer at once.
In Expert Mode, The Destroyer shoots rapidly at the player when they have less than half of their maximum health. The head of The Destroyer can also deal damage as high as 280, crippling the player if they are hit head-on.
Skeletron Prime is a weaponized mechanical variation of Skeletron, with the head alone having 28000 / 42000 / 53550 health. Instead of two hands, it has four - a vice, laser gun, saw, and cannon. With the head and all limbs combined, Skeletron Prime has 59,000 HP. However, like Skeletron, only the head has to be defeated. Skeletron Prime can be summoned as many times per world as needed, by crafting and using a Mechanical Skull, but it can only be summoned at night. It is more mobile than its predecessor, and it regularly flies offscreen, making targeting more difficult. It is also worth noting that when its head spins, its defense increases, unlike Skeletron, whose defense is dropped to 0 when spinning.
Skeletron Prime will drop Hallowed Bars and Souls of Fright upon being defeated, which are both used to craft many kinds of armor and tools. Like Skeletron, if Prime is not killed before the night ends, it will spin and target the player, generally killing the player in one hit, and it will then despawn afterwards.
In Expert Mode, Skeletron Prime follows around the same guidelines as Skeletron; it is less resistant to damage after its hands are destroyed, but its skull gains twice the amount of defense compared to normal mode Skeletron Prime when in its spinning attack.
Plantera is an unrelenting, overgrown guardian of the jungle with 30000 / 42000 / 53550 health. She is awoken by destroying a Plantera's Bulb, which is found in the Underground Jungle after defeating all three mechanical bosses. If the player exits the Underground Jungle, Plantera becomes "enraged", gaining a significant boost to her stats. Her name is a reference to the band ‘Pantera’.
Plantera has two stages. In her first stage, she clings to solid blocks using vine-like hooks and fires Seeds (and eventually Poison Seeds), which are much like Spiky Balls. In her second stage, Plantera has increased speed and charges at the player. She will also release tendrils from her main body. In Expert Mode, the seeds can go through walls and the tendrils are attached to each hook instead (3 on each), adding approximately 9 tendrils.
Golem is an ancient Lihzahrdian automaton with a combined total of 39000 / 58500 / 74583 health. It is summoned by using a Lihzahrd Power Cell at the Lihzahrd Altar in the Jungle Temple. In order to access the Jungle Temple, Plantera must be defeated to obtain the Temple Key.
Golem has two phases. During the first phase, its two fists and its head can be attacked. Like Skeletron, destroying the fists is not needed, but can be helpful. Once the head's health is depleted, it begins flying above the body while shooting fireballs and eye beams, leaving the body open to attack. The body will jump around and punch madly in this phase. Defeating the body will defeat Golem.
The Empress of Light is a Hallow-themed boss with 70000 / 98000 / 124950 health. It can be summoned from killing the Prismatic Lacewing, and is one of two hallowed bosses present in the game. This boss is meant to be a small gap in between Plantera and Golem, but can be done later or skipped altogether, as it is an optional fight. However, if you fight it the moment it is available, you will face a major difficulty spike and numerous attack patterns, making this arguably the hardest boss present in the game depending on when you fight it. The Empress is heavily inspired by “bullet hell” games, which can be blatantly seen in the boss’s attack patterns. It also drew much inspiration from one of Terraria’s lead developers, Cenx. This boss can also be fought in the day, which will make her enraged, greatly increasing her attack damage to an instant-kill, but will drop a Terraprisma once beaten in this mode.
In its first stage, Duke Fishron will attempt to ram the player 5 times before either firing explosive bubbles or summoning Sharknados. In its second stage, Duke Fishron gains glowing eyes and a boost to attack and defense. Although its ramming attacks remain the same, instead of shooting bubbles directly at the player, it flies quickly around in circles, sending bubbles everywhere. Instead of summoning Sharknados in this stage, Duke Fishron summons larger Cthulhunados. These remain in place until Duke Fishron is defeated.
In Expert Mode, when Duke Fishron gets to low enough health, he enters its third phase. In this phase the screen turns dark. Duke Fishron becomes invisible, and only its glowing eyes are visible. He teleports and tries to ram the player with high speed few times, before he teleports again.
The Lunatic Cultist is a crazed apocalyptic zealot with 32000 / 40000 / 51000 health. They are summoned by killing the four cultists, which reside at the entrance of the dungeon after Golem is defeated. When the Lunatic Cultist is defeated, the Lunar Event begin.
While the Lunatic Cultist has only one stage, its attacks become more powerful as it loses health. The Lunatic Cultist flies around randomly, cycling between shooting fireballs, creating a ball which shoots lightning at the player, shooting a giant snowflake which shoots ice shards around it, shooting shadowflames, and shooting five destructible projectiles twice in a row. The Lunatic Cultist will also create fake copies of itself, which will summon a Phantasm Dragon when damaged. If a Phantasm Dragon is still alive and the player damages these copies, it will summon an Ancient Vision instead. Waiting too long to attack the real Lunatic Cultist will also cause the Phantasm Dragon or Ancient Vision to be summoned.
Moon Lord is the final boss of Terraria as of version 22.214.171.124, and drops a majority of the endgame items, such as the Meowmere. It also drops the end-game ore, Luminite, used to craft many endgame armor sets and tools. He is summoned by defeating all four of the Celestial Towers from the Lunar Events, or by using a Celestial Sigil. He has a combined health of 145,000 / 217,500 / 277,311, the most health of any boss in the game. He is considered to be the most difficult boss in the game.
Moon Lord has two hands and a head which must be killed by attacking the eyes on them, and when killed will release invincible True Eyes of Cthulhu. When the three eyes are destroyed Moon Lord's core opens up on his chest, which must then be destroyed to defeat the boss.
Moon Lord's hands shoot two projectiles at once which home onto the player, and summon phantom versions of the True Eye of Cthulhu and throwing them at the player. Moon Lord's top eye will occasionally fire a Phantasmal Deathray that will sweep across the entire screen. Being very deadly to players, it can be avoided by hiding under solid blocks, unless you're playing the 1.4 version then it will pass through if its in the way of the player, or by trying to escape its wrath on a flying mount. When the True Eyes of Cthulhu are released, the places where they used to be will inflict minor contact damage. The True Eyes of Cthulhu will fire many of the same attacks as they did when they were still enclosed within Moon Lord, but be a little less damaging.
In Expert Mode, Moon Lord's Phantasmal Deathray attack deals a lot more damage, enough to kill a player in one shot.
The Ogre is a mini-boss that appears during the final wave of the Old One's Army Tier 2 event. The mini-boss has three attacks, consisting of flinging snot at its targets inflicting Oozed, leaping in the air creating a damaging shockwave when landing, and swinging its large club at enemies in front of it.
Betsy is the final boss that appears during the final wave of the Old One's Army Tier 3 event. The wyvern attacks in similar manner to Duke Fishron, dashing at the player and spiting streams of flames. She also has different attacks as well, launching fireballs at its targets and summoning two Etherian Wyverns alongside it.
- Event initiated with a Pirate Map or naturally
The Flying Dutchman is the mini-boss of the Pirate Invasion. It will initially spawn after 65% of the invasion is completed. It spawns various Pirate enemies to attack the player, and has four cannons which fire cannonballs at that must be destroyed before it can die, similar to the Martian Saucer.` The Flying Dutchman does not disappear after the invasion is over, but it will explode if it has not been engaged before said ending occurs. Several Flying Dutchmen can appear at once. When the Flying Dutchman is killed in Master Mode, it may drop the Black Spot, which is a mount similar in function to the Cosmic Car Keys mount.
Pumpking is the second and final mini-boss in the Pumpkin Moon event. Multiple Pumpkings can be out at the same time, up to six at the final fifteenth wave (or even more in multiplayer). The mini-boss possesses two arms with scythes which swing and fire projectiles at the player, similarly to Skeletron. It cycles through modes of attack from swinging at the player to firing jets of flaming spikes, indicated by the face carved in the pumpkin it uses as a head.
Santa-NK1 is a mini-boss that appears during the Frost Moon event. It attacks by rapidly firing bullets from its chain gun at the player, launching presents that rain and parachute from the sky and shooting rockets at the player which pass through blocks. Its face disappears to reveal a robotic one during its second phase.
- Event initiated by letting a Martian Probe escape after a player is detected
The Martian Saucer is a large flying mini-boss that spawns during the Martian Madness event. It has two phases, the first phase requiring its turrets to be destroyed before its core can be damaged. During its first phase, the saucer cycles through three attacks, wherein it either fires a barrage of lasers at the player, fires homing rockets or attempts to disintegrate the player with a large laser from its bottom. Once the turrets have been downed, the mini-boss begins to quickly chase the player, rapidly sweeping and firing its death-ray attack upon them.
The Solar Pillar itself doesn't do much to attack the player, mainly summoning enemies instead, but it does cause solar fragments to rain non-stop from the sky. It is surrounded by a large, impenetrable force field until 100/150 of its minions have been slain. The enemies it spawns are melee-based. It is highly recommended to stay on the ground, as the Crawltipedes it spawns only target airborne players. After 100/150 minions are killed, the force field around it will dissipate, allowing players to attack it. Most players consider the Solar Pillar to be the most difficult to defeat.
The Solar Pillar spawns the following enemies:
While the Nebula Pillar itself doesn't do anything to attack the player, it spawns magic-based enemies. It is surrounded by a large impenetrable force field until at least 100/150 of its minions are slain. After the 100/150 minions are killed, the force field dissipates, allowing the player to attack it directly.
The Nebula Pillar spawns the following enemies:
The Vortex Pillar itself doesn't do much to attack the player, only occasionally spawning a Giant Magnet sphere sort of attack, similar to the Lunatic Cultist's one. It spawns ranged-based enemies. After 100/150 of its minions have been slain, the force field around it will dissipate, leaving it open to the player's attacks.
The Vortex Pillar spawns the following enemies:
The Stardust Pillar itself doesn't attack the player much, but it is the only pillar with a damaging enemy-spawning animation. It spawns summon-based enemies. As with the other pillars, it is surrounded by an impenetrable force field that is only broken when 100/150 or more of its minions are slain. Once the force field is broken, the player can attack the pillar at will.
The Stardust Pillar spawns the following enemies:
Old-gen console version and 3DS version exclusive
Ocram is a boss that exists on the Old-gen console version and of Terraria. It is generally considered the hardest boss of those versions. It is summoned by using a versionSuspicious Looking Skull. The boss attacks by lunging at the player, firing barrages of lasers and summoning Servants of Ocram. After it has taken enough damage, it switches to its second phase, thus increasing its attack rate and damage. Furthermore, its attacks are now initiated closer to the player.
3DS version exclusive
Lepus is a large, rabbit-like, Easter-themed boss exclusive to the of Terraria. It is summoned with the versionSuspicious Looking Egg, which is dropped by Corrupt Bunnies and Diseaster Bunnies during the Easter season. Lepus lays two types of Easter Eggs: small ones that hatch Diseaster Bunnies, and bigger ones that hatch another weaker Lepus. These eggs can be damaged and destroyed by the player before hatching. A maximum of 5 Lepus can be spawned from the large eggs laid by the original Lepus, and after there are five, no more large eggs will be laid. Only the last remaining Lepus will drop items. Its drops include the Suspicious Looking Egg, Egg Cannon, and Boots of Ostara.
- Boss classification is determined as follows:
- Bosses =
this.boss = true;(except for Martian Saucer).
- Mini-bosses = the other trophy-dropping characters.
- Bosses =
- The status messages that appear upon spawn of the bosses are as follows:
- Eye of Cthulhu: "You feel an evil presence watching you..."
- Eater of Worlds and Brain of Cthulhu: "A horrible chill goes down your spine..." after the first and "Screams echo around you..." after the second Shadow Orb/Crimson Heart is broken. The third only produces a standard summon message.
- The Destroyer: "You feel vibrations from deep below..." or "You feel a quaking from deep underground..."
- The Twins: "This is going to be a terrible night..."
- Skeletron Prime: "The air is getting colder around you..." or "You feel the air getting colder around you"
- Moon Lord: "Impending doom approaches..."
- As of 1.2.3, worlds generated in earlier versions, in which a player defeated all mechanical bosses before upgrading, will not have those bosses register as defeated; for instance, Plantera's Bulbs will not spawn, and the Steampunker will not arrive.
- There are currently 34 different/unique bosses ( 31, 29, 26, 19, 21) in the game.
- Despite it being a difficult enemy, the Dungeon Guardian is not classified as a boss and only has one unique drop.
- The Dreadnautilus is not classified as a boss either.
- Desktop 126.96.36.199:
- Desktop 188.8.131.52:
- Desktop 1.2.3:
- Desktop 184.108.40.206:
- Desktop 1.2:
- Added 4 bosses: Brain of Cthulhu, Queen Bee, Plantera, and Golem.
- Each boss has a rare chance to drop a placeable boss trophy.
- Hardmode bosses have a chance to spawn on their own to help players progress through the game.
- Current hardmode bosses now do slightly less damage and have had their health decreased.
- Desktop 1.1: Added 4 bosses: Wall of Flesh, The Twins, The Destroyer, and Skeletron Prime (the three mechanical bosses are Hardmode upgrades of the original ones).
- Mobile 1.1.6255: Added Turkor the Ungrateful.
- Mobile 1.1.91: Introduced Lepus.