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This page focuses on the huge sea monster.
For the Camelot knight that goes by "The Leviathan", see Lancelot.

For each time we tried to flee, we were thwarted by the monstrous Leviathan that inhabits this cursed realm of the sea.
Liam to Killian about the Leviathan src

The Leviathan is a character featured in the extended universe of ABC's Once Upon a Time. It débuts, with its only appearance, in the graphic fiction novel, Out of the Past.

The Leviathan is based on the sea monster of the same name from the Hebrew Bible.


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Before First Curse


Character Notes

Set Dressing



  1. File:310BedTime.png
  2. Isaiah 27. Retrieved on June 1, 2019. “On that day the Lord with His harsh, great, and strong sword, will bring judgment on Leviathan, the fleeing serpent—Leviathan, the twisting serpent. He will slay the monster that is in the sea.”

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