Belthazor

Belthazor was a very powerful Upper-Level Demon who had been around for one hundred years. Actually, being half-demon and half-human, he was the demon half of Cole Turner. His father, Benjamin Coleridge Turner, was human and his mother, Elizabeth, was pure demon.

Belthazor was a powerful demon, he had killed countless witches, demons and innocents before Belthazor's human half fell in love with Allysa Gillbert. Belthazor was one of the most powerful, feared demons and respected in the Underworld. He later battled Sykes, who had a similar demonic form as him and was killing witches. He lost control of himself when he embraced his demonic side completely and was vanquished as Belthazor but survived as Cole and became an innocent due to being vanquished by a power-stripping potion. He later returned when Cole changed reality to be with Allysa but never changed into his demonic form.