There are lots of different types of monsters to fight in The Reborn. The ones which are currently available are listed below.
| Monster Name | Type | Combat Level | Locations | Drops | Exp |
| Giant Bug | NORMAL | 1 | Olias, | | 4 |
| Elyssian Archer | NORMAL | 1 | Invasion Only | Sol, Featherback, Small Locked Box, | 4 |
| Nytemare | DARK | 1 | Invasion Only | | 5 |
| Cute Bunny | NORMAL | 2 | Invasion Only | Carrot, Animal Pelt, Red Easter Egg, | 6 |
| Red Fire Sprite | MAGICAL | 2 | Invasion Only | Sparkler, Red Firework, | 8 |
| Rabid Reindeer | MAGICAL | 2 | Invasion Only | Animal Pelt, Carrot, | 6 |
| Deer | NORMAL | 3 | Olias, Deep Twilight Forest, | Animal Pelt, Raw Meat, | 7 |
| Durby Bitch | NORMAL | 3 | Olias, Deep Twilight Forest, | Sol, Cooked Snapperfish, | 25 |
| Smuggler | NORMAL | 4 | Port Solera, | Sol, Old Box, Small Locked Box, Base Necklace, Base Ring, | 9 |
| Giant Rat | NORMAL | 4 | Quest Only | | 15 |
| Green Fire Sprite | MAGICAL | 4 | Invasion Only | Sparkler, Green Firework, | 12 |
| Overworked Elf | MAGICAL | 4 | Invasion Only | Plain Wood, Maple Wood, Small Present, Wooden Train, Red Santa Hat, Wooden Dragon, | 10 |
| Mummy | UNDEAD | 4 | Invasion Only | Sol, Small Locked Box, Silent Dream, Locked Eerie Casket, | 10 |
| Jodo | NORMAL | 5 | Deep Twilight Forest, | Raw Meat, Animal Pelt, | 10 |
| Mikhael | NORMAL | 5 | Quest Only | | 25 |
| Mud Creature | EARTH | 6 | Port Solera, | | 12 |
| Blue Fire Sprite | MAGICAL | 6 | Invasion Only | Sparkler, Blue Firework, | 16 |
| Birthday Goblin | NORMAL | 7 | Invasion Only | Sol, Blue Balloon, Red Balloon, Green Balloon, | 14 |
| Swamp Serpent | WATER | 7 | Invasion Only | | 15 |
| Mercenary | NORMAL | 8 | Olias, | Bronze Axe, Bronze Haubergeon, Verial Short Sword, Verial Breastplate, Base Necklace, | 15 |
| Drunk Santa | MAGICAL | 8 | Invasion Only | Sol, Bottle of Brandy, Small Snowball, Christmas Present, Red Santa Hat, Santa Mask, Green Santa Hat, Yellow Santa Hat, | 25 |
| Soldier | NORMAL | 10 | Mercia, | Verial Gauntlets, Verial Haubergeon, Verial Legs, Small Locked Box, Verial Xroro, Base Ring, | 20 |
| Tribesman | NORMAL | 10 | Nauren, | Animal Pelt, Birds Egg, | 21 |
| Big Bunny | NORMAL | 10 | Invasion Only | Carrot, Lettuce, Animal Pelt, Red Easter Egg, Blue Easter Egg, | 20 |
| Angry Villager | NORMAL | 10 | Invasion Only | Bonfire Toffee, Sparkler, Sol, Guy Fawkes Mask, | 25 |
| Ghost | UNDEAD | 11 | Marden Chapel, | Spirit Stone, | 22 |
| Giant Spider | DARK | 12 | Deep Twilight Forest, | | 23 |
| Kidnapper | NORMAL | 12 | Quest Only | Sol, | 50 |
| Anniversary Imp | MAGICAL | 13 | Invasion Only | Sol, Blue Balloon, Red Balloon, Green Balloon, Piece of Cake, Locked Birthday Gift, Glob of Icing, | 30 |
| Seasoned Soldier | NORMAL | 14 | Mercia, | Verial Breastplate, Verial Xroro, Embal Battle Hammer, Embal Full Shield, | 25 |
| Skeleton | UNDEAD | 15 | Dungeon Only | Sol, | 50 |
| Elder Tribesman | NORMAL | 15 | Nauren, | Animal Pelt, Birds Egg, Spear, | 29 |
| Scrooge | NORMAL | 15 | Invasion Only | Sol, Small Locked Box, Small Present, Christmas Pudding, Red Santa Hat, | 36 |
| Goblin | MAGICAL | 16 | Deep Twilight Forest, | Sol, Old Box, Small Locked Box, Base Ring, Base Necklace, | 30 |
| Elyssian Mage | MAGICAL | 16 | Invasion Only | Sol, Maple Aestus Staff, Twilight Bliss, | 35 |
| Conspirator | NORMAL | 17 | Invasion Only | Sol, Holy Warrior Sword, Bonfire Toffee, Guy Fawkes Mask, | 30 |
| Dire Wolf | DARK | 17 | Invasion Only | | 42 |
| Tortured Ghost | UNDEAD | 18 | Marden Chapel, | | 36 |
| Zombie | UNDEAD | 19 | Dungeon Only | | 38 |
| Nightstalker | DARK | 20 | Deep Twilight Forest, | | 40 |
| Tentacle | WATER | 20 | Seagate, | Seaweed, Small Locked Box, Leather Boots, | 45 |
| Dark One Sebastian | MAGICAL | 20 | Quest Only | | 250 |
| Snow Imp | MAGICAL | 20 | Invasion Only | Small Snowball, Tinsel, Mistletoe, | 50 |
| Zytra | UNDEAD | 21 | Quest Only | | 200 |
| Smuggler Ghost | UNDEAD | 22 | Marden Chapel, | Sol, Small Citrine, Silent Dream, Twilight Bliss, Divine Light, | 48 |
| Red Fire Beast | MAGICAL | 22 | Invasion Only | Red Firework, Cinnabar Ruby, Essence of Dark Fire, | 55 |
| Terrorbird | MAGICAL | 22 | Invasion Only | | 54 |
| Evil Clown | DARK | 23 | Invasion Only | Small Present, Blue Balloon, Red Balloon, Green Balloon, Large Present, Birthday Cake, | 70 |
| Aea Imp | MAGICAL | 24 | Auto Attack OnlyInvasion Only | Sol, Purple Imp Hide, | 50 |
| Shadow Creature | DARK | 25 | Marden Chapel, | Small Citrine, Morning Sapphire, | 54 |
| Cyclops | MAGICAL | 25 | Dungeon Only | Silent Dream, | 100 |
| Evil Snowman | MAGICAL | 25 | Invasion Only | Carrot, Small Present, Large Present, Small Snowball, Large Snowball, Santa Mask, | 80 |
| Dark One Tobias | MAGICAL | 25 | Quest Only | | 300 |
| Frost Spider | NORMAL | 27 | Ruins of Aaranbad, | Large Locked Box, | 60 |
| Giant Bunny | NORMAL | 28 | Invasion Only | Carrot, Blue Easter Egg, Yellow Easter Egg, Bunny Ears, | 65 |
| Green Fire Beast | MAGICAL | 28 | Invasion Only | Green Firework, Earth Tear, Essence of Earth, | 65 |
| Raahn Worker | NORMAL | 30 | Kendro, | Raahn Pickaxe, | 70 |
| Blood Wolf | DARK | 30 | Invasion Only | Animal Pelt, | 110 |
| Golem | EARTH | 30 | Dungeon Only | | 200 |
| Great Wax Beast | DARK | 31 | Invasion Only | Sol, Birthday Candle, Locked Birthday Gift, Baby Elephant, Large Locked Box, Emerald, | 95 |
| Baby Kraken | WATER | 32 | Seagate, | Large Locked Box, Kraken Scale, | 80 |
| Elyssian Warrior | NORMAL | 32 | Seagate, | Sol, Cooked Snapperfish, Locked Chest, | 85 |
| Blue Fire Beast | MAGICAL | 34 | Invasion Only | Blue Firework, Time Stone, Essence of Frozen Life, | 75 |
| Wraith | UNDEAD | 35 | Ruins of Aaranbad, | Sol, Sunsteel Large Helm, Sunsteel Battle Hammer, Sunsteel Breastplate, Rosesilver Knife, Rosesilver Small Shield, Rosesilver Long Sword, | 82 |
| Gargoyle | EARTH | 35 | Invasion Only | Rocks, Earth Tear, Locked Eerie Casket, | 90 |
| Tarvos | NORMAL | 36 | Auto Attack Only | Sol, Cooked Dwarf Snakehead, Cooked Midnight Perch, Cooked Angelfish, Small Locked Box, | 74 |
| Angry Admin | MAGICAL | 38 | Invasion Only | Blue Balloon, Red Balloon, Green Balloon, Birthday Cake, Essence of Earth, Essence of Day, | 87 |
| Earth Imp | EARTH | 39 | Invasion Only | Sol, Leek, Earth Tear, Earth Imp Hide, Essence of Earth, | 112 |
| Horned Rock Beast | EARTH | 40 | Rainbow Forest, | Rocks, Locked Chest, | 80 |
| Raahn Guard | NORMAL | 42 | Kendro, | Large Locked Box, Raahn Helmet, Raahn Club, | 85 |
| Huge Bunny | NORMAL | 42 | Invasion Only | Carrot, Yellow Easter Egg, Locked Chest, Bunny Ears, | 85 |
| Werewolf | DARK | 45 | Rainbow Forest, | Animal Pelt, Claw, | 90 |
| Earth Colossus | EARTH | 50 | Dungeon Only | Essence of Earth, | 1000 |
| Basilisk | MAGICAL | 50 | Auto Attack OnlyRainbow Forest, | Basilisk Scale, | 100 |
| Giant Santa | MAGICAL | 50 | Invasion Only | Christmas Present, Black Santa Hat, Sack of Presents, | 250 |
| Wandering Warlock | DARK | 50 | Darktown, | Sol, Earth Tear, Amethyst, | 115 |
| Enchanted Party Cake | MAGICAL | 52 | Invasion Only | Sol, Large Present, Locked Birthday Gift, Birthday Cake, Plain Sponge Cake, Glob of Icing, Birthday Candle, | 120 |
| Egg Swarm | MAGICAL | 54 | Invasion Only | Red Easter Egg, Blue Easter Egg, Yellow Easter Egg, Strange Egg, | 115 |
| Mist-Maker | MAGICAL | 55 | Auto Attack OnlyRuins of Aaranbad, | Sol, Spirit Stone, Amethyst Necklace, Scythe, | 110 |
| Undead Imp | UNDEAD | 55 | Auto Attack Only | | 116 |
| Giant | NORMAL | 57 | Invasion Only | | 142 |
| Raahn Warrior | NORMAL | 60 | Kendro, | Small Locked Box, Locked Chest, Raahn Helmet, Raahn Chest Plate, Raahn Sword, | 120 |
| Possessed Miner | NORMAL | 60 | Darktown, Zone 20, | Rocks, Sunsteel Ore, Rosesilver Ore, Large Locked Box, Locked Chest, Divine Light, | 120 |
| Aester Bunny | DARK | 64 | Invasion Only | Carrot, Aester Basket, Silent Dream, Twilight Bliss, Time Stone, | 145 |
| Pumpkin Beast | DARK | 70 | Invasion Only | Pumpkin, Divine Light, Locked Eerie Casket, Time Stone, | 175 |
| Hyneq | MAGICAL | 75 | Invasion Only | | 243 |
| Kraken | WATER | 80 | Seagate, | Seaweed, Locked Chest, Kraken Scale, Rusted Anchor, | 250 |
| Alchemist | MAGICAL | 80 | Invasion Only | | 225 |
| Possessed Rock | NORMAL | 90 | Zone 14, Zone 15, Zone 16, Zone 17, Zone 18, Zone 19, Zone 20, Myzs Cage, | | 170 |