The Giruveganus is a dragon/tyrant-type enemy from Final Fantasy XII. It can be found in the Feywood and the Great Crystal at Giruvegan. It is surrounded by thick Mist, making its appearance like that of an Aeronite. Giruveganus is an important enemy when trying to spawn the Behemoth King mark, as Behemoth King shares the same spawn-point. To spawn the Behemoth King, the player must kill the Giruveganus in Edge of Reason, then move to Ice Field of Clearsight and clear all enemies, and Behemoth King will spawn in Giruveganus's place.