Phibrizo

フィブリゾ

Phibrizzo is the second-oldest mazoku, after Dark Lord Shabranigdo, and serves as the series' antagonist. Like all mazoku, he desires the world's return to the Sea of Chaos and will kill anyone who obstructs him, regardless of their allegiance.
The other mazoku lords despise him but obey him out of fear. He is known by his title, Hellmaster, due to his power over souls, which allows him to literally cause anyone's death at will. Consequently, spells that draw power from him involve the undead.
In the past, he devised the plan that resulted in the Water Dragon God's death by creating the God Sealing Barrier and attacking while she was weakened. Now, his plan is to make Lina use the Giga Slave spell she created, as it has the ability to summon the Sea of Chaos into the world.