Oni Oni no Mi, Model: The Yellow King

Demon Demon Fruit: Abbadon
This fruit grants the user the ability to take three forms. These being their normal form, a hybrid form between the two, and a full Abbadon form.

Strengths
Taking the hybrid and full form of Abbadon grants the user immense strength fitting that of a demon that was near Satans level of power, Black feathered wings allowing for swift and agile flight, a pair of jet black horns on the users brow, and the ability to summon an immense storm of hail and lightning regardless of the surrounding terrain and or location to which the user is.

Abbadon
Abbadon is titles as the "Angel of Destruction" and the "Demon of the Apocalypse" he commanded a position similar to that of satan himself as ruler over a bottomless pit of tortured souls aswell as had full command over several of the 10 plagues of Egypt (for fairness sake i chose a single plague).