Yidrazil

Yidrazil was a fallen angel and servant of Azazel, ruler of the Neyaphem. Yidrazil had been imprisoned in the Brimstone Dimension for centuries with Azazel and his followers. Their scheme to escape their prison brought them into conflict with the X-Men and Azazel's scions Abyss, Kiwi Black and Nightcrawler. Yidrazil was beheaded by Kiwi, who had come to the aid of the tortured Angel (Warren Worthington).