Exdeath (?????, Ekusudesu?) (X-Death in the Anthology version) is a powerful warlock, would-be ruler of a parallel world, and the antagonist in Final Fantasy V.

Exdeath was originally a single tree deep in the Moore Forest, which the people of that world had used to seal countless demons and evil spirits in for centuries, until about 30 years ago, when the tree developed its own sentience from all the evil it had contained and assumed a human-like form. After being defeated by the four Dawn Warriors (Galuf, Xezat, Dorgann, and Kelger), Exdeath was imprisoned within the first world, sealed by the power of the crystals, some 30 years before the events in the game. At this time, he shatters the four crystals one by one, just before the heroes are able to save them. After the fourth crystal is destroyed, Exdeath is released and returns to his (and Galuf's) home world.

Here, he returns to his castle. Bartz, Lenna, and Faris are captured shortly after warping to his world. They are used as hostages to keep Galuf and his army from attacking. It is protected by a powerful barrier that is generated by four towers surrounding the castle; Exdeath activates the barrier while the four are on the Big Bridge, which catapults them to Gloceana and would have killed any of Galuf's soldiers on the bridge. To attack the castle and defeat Exdeath, the heroes must destroy one of the towers to disable the barrier. In Exdeath's world, the four crystals are contained in the Elder Tree in Moore Forest. Exdeath destroys these crystals, because they are holding the two worlds apart, as they were once a single world, but were separated. He kills Galuf, who tries to defend the crystals and his friends. By doing so, the two worlds recombine, and Exdeath gains access to the power that was sealed by the separation of the worlds, the Void (?, Mu?).

He utilizes this power to great destruction, effectively annihilating Tycoon Castle, Lix, and other locations. When the Warriors of Dawn challenged him, he attempted to use the Void on them. However, in the ensuing fight, in which Exdeath reveals his true form as a tree, Exdeath became a victim of his own instrument. He emerged as Neo Exdeath, a chaotic vessel of the Void itself composed of the various evils that gave Exdeath life protruding from its body. Now nothing more than a host to the very power he sought, Neo Exdeath desired to turn all to nothingness, presumably so that it, too, could disappear. But the warriors destroyed Neo Exdeath, recreating the four crystals that restored all the damage caused by the Void.