Monsters are minions of Kundun in MU Online that the players' goal is to defeat. They give the player experience and may drop zen, weapons, armor, spellbooks, scrolls and parchments.
Lorencia[]
Spider, Budge Dragon, Lich, Bull Fighter, Giant, Hound, Elite Bull Fighter, Skeleton Warrior.
Noria[]
Chain Scorpion, Goblin, Stone Golem, Agon, Forest Monster, Elite Goblin, Hunter, Beetle Monster.
Devias[]
Yeti, Elite Yeti, Ice Queen, Assassin, Ice Monster, Worm, Hommerd.
Dungeon[]
Ghost, Dark Knight, Cyclops, Larva, Skeleton Archer, Elite Skeleton Warrior, Skeleton Warrior, Thunder Lich, Hell Spider, Hell Hound, Poison Bull, Gorgon.
Atlans[]
Bahamut, Vepar, Valkyrie, Great Bahamut, Silver Valkyrie, Lizard King and Hydra.
Lost Tower[]
Devil, Death Cow, Death Gorgon, Shadow, Poison Shadow, Balrog, Cursed Wizard, Death Knight.
Tarkan[]
Mutant, Bloody Wolf, Iron Wheel, Tantalos, Beam Knight, Zaikan, Death Beam Knight.
Aida[]
Death Tree, Forest Orc, Blue Golem, Witch Queen, Hellmaine, Blue Golem, Bloody Orc, Bloody Death rider, Bloody Witch Queen.
Crywolf[]
Hammer Scout, Lance Scout, Bow Scout, Werewolf, Balram, Soram, Death Sled Death Spirit, Dark Elf, Balgass.
Elbeland[]
Strange Rabbit, Pollution Butterfly, Crazy Rabbit, Werewolf, Curse Rich, Totem Golem, Grizzly, Grizzly Captin.
Swamp of Peace[]
Sapi-Unus, Sapi-Duo, Pawn Shadow, Shadow Knight, Shadow Look, Napin Thunder, Ghost Napin, Blaze Napin, Sapi Queen, Shadow Master, Napin Ice, Medusa (Boss).
Raklion[]
Ice Walker, Giant Mammoth, Ice Giant, Coolutin, Iron Knignt, Selupan, Mammoth Dark, The Dark Giant, Dark Coolutin, The Dark Knight Iron.
Vulcanus[]
Zombie Fighter, Resurgent Gladiator, Butcher Ashes, Blood Assassin, Assassin Blood Cruel, Burning lava Giant ,Outrageous lava Giant.
Karutan[]
Poisonous Scorpion, Bone Scorpion, Orkus, Golog, Crypta, Crypos, Condra, Nacondra.
Icarus[]
Alquamos, Mega Crust, Queen Ranier, Drakan, Alpha Crust, phantom Knight, Great Drakan, Phoenix of Darkness.
Kanturu[]
Splinter Wolf, Satyros, Iron Rider, Blade Hunter, Kentauros, Berserk, Gigantis, Genocider.
Land of Trials[]
Axe Warrior, Lizard Warrior, Poison Golem, Queen Bee, Fire Golem, Erohim.
Kalima[]
Aegis, Lord Centurion, Blood Soldier, Death Angel, Necron, Death Centurion, Schriker, Illusion of Kundun.
Acheron[]
Devil Fairy, Elemental Beast, Elemental Knight, Ubaid Devil Fairy, Ubaid Elemental Beast, Ubaid Elemental Knight, Gnome, Hellraiser, Salamander, Sylphid, Undine.
Nars[]
Nars Devil Fairy, Nars Elemental Beast, Nars Elemental Knight, Core Magriffy.
Debenter[]
Debenter Devil Fairy, Debenter Elemental Beast, Debenter Elemental Knight, Normus, Muff.
Ferea[]
Ferea Knight, Ferea Fighter, Ferea Archer, Ferea General, Lord of Ferea.
Nixies Lake[]
Paraca, Vasuki, Bass, Nix.
Swamp of Darkness[]
Swamp Ent, Wooden Beast, Swamp Wizard, Mutantile, Swamp Monster, Water Monster, God of Darkness.
Deep Dungeon[]
Deep D Larva, Deep D Skeleton Warrior, Deep D Cyclops, Deep D Ghost, Deep D Skeleton Archer, Deep D Hell Hound, Deep D Hell Spider, Deep D Chief Skeleton, Deep D Thunder Lich, Deep D Poison Bull Fighter, Deep D Dark Knight, Deep Dungeon Gorgon.
Cubera Mine[]
Mine Digger, Mine Carrier, Mine Driller, Mine Porter, Dead Digger, Dead Shoveler, Dead Porter.
Crimson Flame's Icarus[]
Crimson Flame's Alquamos, Crimson Flame's Queen Rainier, Crimson Flame's Megacrust, Crimson Flame's Alphacrust, Crimson Flame's Phantom Knight.
Uruk Mountain[]
Uruk Devil Fairy, Uruk Elemental Beast, Uruk Elemental Knight, Lord Silvester.
Scorched Canyon[]
Scorched Warrior, Scorched Wizard, Scorched Assassin.