Barthandelus

Barthandelus is a powerful boss from Final Fantasy XIII.

The true form of Galenth Dysley, leader of the Sanctum, Barthandelus is a Pulse fal'Cie who secretly plots Cocoon's destruction. Lightning's group initally believed Galenth to be a l'Cie, but when they met him in the Palamecia's control room, Dysley revealed his true form after absorbing his familiar, Minerva. Barthandelus attacked the party and was seemingly defeated, but merely melted away to reveal Galenth unscathed. After the party takes an airship to Pulse and discovers the Oerba Village, Galenth meets them and transforms into a more futuristic Barthandelus, which is beaten again. Barthandelus is finally defeated by the group in the core of Orphan's Cradle, first sinking into the Orphan's pool, then rising again as Orphan's shell.

Strategy
In battle, Barthandelus has four adornments attached to the sides of his head that enable him elemental protection and attacks. He can cast Bio, Dull, and Curse on his opponents to hinder them, and can open up his face to execute his Thanatosian Smile attack. His attacks include Ruinga, Baptism in Ruin, and his ultimate attack Destrodo.