A fish beast that was eaten by a shark or something, but refused to die and was reanimated due to its seething hatred of the world and its lust for vengeance. Yes, that's surely what this beast is.In-game description
The Sekil is the Stage 1 form of the Abyss group.
Sekils cannot be found in the wild. They are not used by any enemy signers, except for those participating in the Random Tournament.
A Sekil evolves from an Abyss Egg. It can evolve into two forms. The magic form is unavailable in the Alpha Version.