Velezark

Evilzaag (イビルザーグ) is the final boss of Fire Emblem Warriors and the mastermind behind the events of the game.

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Evilzaag first appears in the last scene of Chapter 16, revealed to have been possessing the Guston prince Darius ever since his escape with the Aytolis siblings, Rowan and Lianna.

It acts as a spy for King Ozosid to steal the Fire Shield once all the heroes from three worlds have been gathered to power it up, so they can attempt to use the shield for their evil schemes. Evilzaag and Ozosid also had Queen Yelena as their hostage.