Zeobide

Zeobide (ゼオバイド, "Zeobaido") is an evil spirit from another dimension that has terrifying powers.

Appearance
He is the Final boss in the video game: Shaman King:Power of Spirit.

History
In order to control its powers, a shaman with a vast amount of Furyoku level must be present to do so. Seeing that there was none, he made a contract with Vineuvail that he will obey his orders as long as he had someone to keep his powers under control. Soon he made shamans with genetic manipulation, making many test subjects, including Meril Inugami. Out of thousands of test subject, Meril was the only one to handle all that power, to which Vineuvail sent his troop to get her back. They used her to break his seal and used her as his core, making it so, that if Zeobide takes damage, so will Meril. But with the info from Zaua, who told them to use the Spear of Gaius, Yoh destroyed Zeobide and freed Meril unharmed.