Reupload from my deviantArt.

Though not in the same row as Zelus and Vallum, Dolosus would be known as the Beast of the Sky, Ziz.

Powers: The Demon Dolosus mastered lies and deceit, to the point that it had began moving behind the Sunguard. Using its mesmerizing coat and unspoken words, the creature had convinced a number of Sunguards that it was in fact a new being, and not one of the Twenty Primal Demons. But it was not until it was discovered that the monster was slaying the enemies it had convinced behind their backs, by unconcealing it's true form beneath the colorful plumage, that the Fraudulent's greatest ability was revealed, as one feather shed as a lie that Dolosus could, thanks to the Lawless, make reality, enabling the Demon to become uncorporeal, to stretch its bone-like apendages, or even turn it's inner bowels into a bottomless pit, to name a few.

Defeat and Aftermath: With the Lawless's disappearence, Dolosus's greatest strength became weakened to a great extent, and its lies had no effect on the Sunguard, the creature soon fell. In a worthless attempt to escape demise, Dolosus shed all of its plumage, revealing its true form that had been hiding beneath it, which in turn also weakened it greatly. The Beast was entombed in molten rock and then solidified, which was then tossed away to a great drop, where it would remain. Due to their power, any feather Dolosus would grow while entombed would slip out of the rock, carrying with it different attributes of great pain and lies.