Observer

Observers are Pre-Hardmode minibosses that spawn during Blood Moons. They have basic Hovering AI along with the ability to shoot Death Lasers.

Trivia[]

Observers somewhat resemble the Guardian from Minecraft, whereas Elder Observers resemble Elder Guardians.

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Characters:

Bosses •

Pre-Hardmode enemies

Abomination • Arch Demon • Armored Jellyfish • Atis • Banshee • Bicholmere (Corrupted • Crimson) • Bloodmoon Warrior • Bone Archer • Bone Fish • Buckethead Zombie • Cave Golem • Coldtrap • Conjurer Skeleton • Cloud Slime • Core Slime • Coretaur • Deepwater Vilefish • Dungeon Keeper • Flaming Reaper • Forest Spirit • Flying Bones • Flying Leech • Frostbyte • Geerd • Gelateen • Glacier • Gloomy Seer • Granite Beetle • Granite Bowman • Gurd • Headless Zombie • Heavy Zombie • Hivehead Zombie • Hoplite Archer • Hoplite Officer • Ice Wolf • Ice Mother Slime • Infected Zombie • Jungle Spirit • Knight Zombie • Leprechaun • Minotaur • Orc (Champion • Skeleton • Warrior) • Parasprite • Peepers • Pyramid Head • Pyramid Rider • Ruin Ghost • Rogue • Sand Thing • Shnoot • Skeleton Knight • Snow Eater • Space Bug • Squid Zombie • Thief • Thunder Bones • Undead Archaeologist • Undead Musketeer • Undead Warlock • Undead Warrior • White Walker • Wolves (Alpha • Beta • Omega) • Woodling (Warrior) • Woody • Zarprite • Zootaloo (Matriach)

Hardmode enemies
Surface	Gray Raven • Grood • Heavy Zombie • Iron Giant • Magium Flyer • Magium Keeper • Magium Sword • Night Walker • Phabor • Supreme Possessed Armor
Underground	Agloomination • Scary Bat • Zarprute
Cavern	Dragon Skull • Flayer • Ghost Knight • Zarprute
Ocean	Giant Crab
Desert	Desert Princess • Desert Wasp
Snow	North Wind • Polaris • Snow Bat
The Crimson	Crimer
The Hallow	Hallow Slimer
The Underworld	Blazer • Devil Tortoise • Hellgron

Tremode enemies
	Ancient Cursed Skull • Astrofly • Avenger • Barmadillo • Beetle (Dread • Fire • Frost) • Brute • Colossal Tortoise • Comet Head • Creator of Nightmare • Deimos • Devourer of Planets • Dranix • Dread Beetle • Enraged Bat • Evolved Zombie • Exuberant Hound • Fallen Warrior • Fat Flinx • Galasquid • Ghost Warrior • Giant Gastropod • Giant Slime • Hallower • Hellhound • Ice Blazer • Lihzahrd Warrior • Luminion • Mechanical Firefly • Night Terror • Phobos • Possessed Hornet • Quartz Beetle • Rich Slime • Screamer • Shadow Ripper • Sighted • Skullker • Squoma • Supreme Possessed Armor • Temple Slime • The Axeman • The Girl • The Thing • Thin Man • Twilight Bat

Event enemies
Rain	Mighty Nimbus
Blood Moon	Bloodmoon Warrior (Elite) • Phantom
Night of the Undead	Arsonist • Bonecing • Corpse • Dapperblook • Deadling • Dice Zombie • Dopelganger • Farmer Zombie • Fat Sack • Ghoul Officer • Painmaker • Petrified Zombie • Scourge • Spear Zombie • The Haunt • Zombat • Zombeast • Zombomber
Lunar Events	Nova Alchemist • Nova Flier • Nova Kamikaze • Yuwarkee • Warkee
Paradox Cohort	Forgotten Creature • Paradox Bat • Paradox Soul • Paradox Soul Warrior

Bosses
Pre-Hardmode	The Rukh • Tiki Totem (Tiki Soul • Tiki Warrior • Soul of Happiness • Soul of Indifference • Soul of Anger) • Evil Corn • Ancient Dragon (Baby Dragon) • Storm Jellyfish • Fungus Beetle (Great Fungus Bug) • Heater of Worlds (Magma Leech)
Hardmode	Alchemaster (Plague Soul) • Motherboard (Clamper • Signal Drone) • Pixie Queen (Pixie Queen Guardian) • Frost King • Wall of Shadows (Shadow Hand • Shadow Steed) • Cog Lord (Cog Lord Probe) • Cyber King • Mothership
Tremode	The Dark Emperor (Dark Servant) • Brutallisk (Naga • Quetzalcoatl) • Space Whale • The Trinity • Andas
Event	Almagron • Cryptomage (Bonecing • Dapperblook • Scourge • The Haunt) • Dark Druid (Dark Druid Minion) • Nova Pillar • Observer (Elder) • Violeum
Minibosses	Biome Mimic (Desert • Ocean)