Diabolos



Diabolos is a parasitic creature that once attacked the Fairy World. One day Diabolos suddenly appeared in Fairy World, intent on draining it of all life and energy. The Fairy King sealed the creature within his World Tree form. Despite being sealed, Diabolos fought back by trying to corrupt the tree. Diabolos nearly caused Beth's home kingdom to collapse when it corrupted the tree.

When Diabolos tried to destroy the Fairy World completely. It was confronted by Beth and her new friends. Working together with Beth, Yucie, Cocoloo, Glenda and Elmina fought against the demon. Diabolos died when the Platinum Princess candidates united and used the power of the Eternal Tiara to destroy it. Though Diabolos managed to poison Arc even upon it's defeat, making him suffer a corrupting wound.

Trivia

 * It's eventually revealed that Diabolos was created by the Eternal Tiara itself. Thus explaining why only the power of the Tiara was enough to destroy the beast.