During the stage, Leviathan sometimes sends his tentacles to disable a tower. Unlike Vez'nan however, this ability hardly poses any threat, since Leviathan uses it very rarely, can only affect towers next to the shoreline and most of the time, when the enemies reach the tower, it has already worn off. After wave 15, Leviathan surfaces at the large pool of water at the northeastern corner and proceeds to the eastern exit.
Compared to his elite minions (Blacksurges, Bluegales and Bloodshells), Leviathan is laughably easy. He continues to disable towers, however, he must stop whenever he does so, making him more vulnerable to your towers; and that's all he's able to do: he has no more tricks, yet unlike Sarelgaz, he doesn't have extraordinary health to balance that out. The minions which spawn alongside him consist almost entirely of Greenfins and Deviltides (and an occasional Redspine), which can be dispatched very easily if you have managed to pass the 15 brutal rounds previously. When he gets near the exit, he'll break the pillars blocking his path and summon a large horde of Bluegales and Bloodshells, though that shouldn't happen because Leviathan is so weak and slow that he's more likely to die before reaching it.
- Leviathan is named after Leviathan, a sea monster that appears in the Old Testament. His appearance, however, appears to be based on the Kraken in Norse mythology and on Lovecraft's Cthulhu.
|Kingdom Rush - Enemies|
|Goblin • Orc • Shaman • Ogre • Gargoyle • Shadow Archer • Dark Knight • Wulf • Worg • Golem Head • Goblin Zapper • Orc Champion • Worg Rider • Forest Troll • Hobgoblin Chief|
|Bandit • Brigand • Marauder • Giant Spider • Spider Matriarch • Spider Hatchling • Raider • Pillager|
|Troll • Troll Champion • Troll Chieftain • Yeti • Rocket Rider • Dark Slayer • Son of Sarelgaz • Troll Pathfinder • Troll Breaker|
|Demon Spawn • Demon Lord • Demon Hound • Demon Imp • Skeleton • Skeleton Knight • Necromancer • Magma Elemental • Husk • Noxious Creeper • Mutated Hatchling • Tainted Treant • Swamp Thing • Rotshroom|
|Zombie • Giant Rat • Wererat • Fallen Knight • Spectral Knight • Abomination • Werewolf • Lycan • Black Hag • Sheep|
|Demon Legion • Flareon • Gulaemon • Cerberus|
|The Juggernaut • J.T. • Vez'nan • Sarelgaz • Gul'Thak • Greenmuck • The Kingpin • Ulguk-Hai • Moloch • Myconid • Lord Blackburn|
|Kingdom Rush: Origins - Enemies|
|Gnoll Reaver • Gnoll Burner • Gnoll Gnawer • Hyena • Perython • Gnoll Blighter • Ettin • Twilight Harasser • Gnoll Catapult • Gnoll Warleader • Twilight Brute • Blood Gnoll • Blood Ogre • Ogre Magi|
|Sword Spider • Satyr Cutthroat • Satyr Hoplite • Webspitter Spider • Gloomy • Twilight Scourger • Scourger Banshee • Bandersnatch • Redcap • Twilight Avenger • Boomshroom • Munchshroom • Fungus Breeder • Zealot • Bunny • Blood Servant • Screecher Bat • Mounted Avenger|
|Razorboar • Twilight Evoker • Twilight Golem • Cloud Stalker • Spiderbrood • Twilight Heretic • Son of Mactans • Arachnomancer • Drider|
|Shadowspawn • Devourer • Dark Spitter • Shadow Champion|
|Hi-Hi Enha • Malicia • Spider Goddess • Bram the Beheader • Baj'Nimen the Hateful • Godieth|