Riokiullis

Summary
Riokiullis is the second of the give demons formed after Tangaran was split by Ardon.

Origins
Upon splitting he was sent to the planet of Earth, landing deep underground and laying dormant for millions of years under what would become Industrial Revolution London. He was reawakened in the height of Jack the Rippers slaughter on September 25, 1896, awakened by the amount of death and slaughter happening in the city above.

Jack the Ripper
Riokiullis, still very weak having just woken up, went to search for the one causing all of this slaughter, and eventually found Jack the Ripper on September 30. He offered an alliance with The Ripper, offering him demonic power in exchange for the blood of those he killed so that he could drink and regrow his lost power, to eventually find the other fragments. The Ripper refused, instead attacking Riokiullis, leaving him with a ghastly wound that would eventually kill him.

Spring-Heeled Jack
Being wounded badly, bleeding and unable to hunt, Riokiullis seeked out and quickly found London's second most prolific serial killer, Spring-Heeled Jack, and offered him a deal. He would turn his body into a mask for Spring-Heeled Jack to wear, giving him the demonic power to kill or instill insanity with a gaze at the mask, in return for being able to drink the blood of Spring-Heeled Jacks victims in order to heal his wounds and grow again. Spring-Heeled Jack, wanting to achieve the same success as Jack the Ripper, agreed to the deal, and Riokiullis became the mask.

While the two were very successful together, they were stopped fairly abruptly when Jack the Ripper attacked Spring-Heeled Jack and killed him. Riokiullis, out of fear, stayed as the mask until The Ripper left, then, still weak but healed enough to survive, left behind a decoy of the mask and disappeared into the night, flying far away and hiding in fear of The Ripper.