Azazel (Omniverse)

Azazel is a demon in the series: Power Rangers: Omniverse and is one of the primary antagonists in Chapters 2 & 3 of the series.

Biography
Azazel was a powerful demon and was the General of Hell who served Lucifer. He was known as "The Yellow-Eyed Demon", or "Yellow Eyes" because of his glaring demonic eyes. Throughout his existence, he's been looking for a way to free his master (Lucifer) out of his cage in Hell. Lucifer ordered Azazel to have Lilith break the 66 Seal that had locked his cage in Hell and for him to find a human vessel for Lucifer to walk the Earth and bring upon the Apocalypse. And so he went on a quest and chose a specific line of children and given them special demonic powers, to see who'd be strong enough to contain Lucifer, and even searched for an old Ranger for him to construct his own evil Ranger. During his time for his search of the "special children with demonic powers, once he killed Hunter's baby brother and mother, Mary Winchester, him and his father, John Winchester, had spent all their lives on hunting Azazel for nearly two and a half decades where eventually Hunter finally killed him to avenge his family. However, Azazel's actions continued to influence events and had impacted Hunter and Kurt even years after his death. For example, both Hunter and Kurt have been haunted by visions or hallucinations of him, and his plan to unleash Lucifer and start the Apocalypse still came to pass despite having died years before. Azazel was known to be one of Hell's top ranking demons, commanding the demonic forces of the underworld during the start of the "uprising of all evil beings" in the universe to take over the Earth.