Lucifer

A character from Shin Megami Tensei IV.

The Ultimate Chaosform
The king of chaoschuds (maybe).

Season 6
Walter Bennet had been trying to develop his research into the ultimate lifeform, even using his past self in the attempt.

Episode 11
12 years into the future, the branch of SC that Bennet was working on has been totally taken over by BANS Army, working against The Three Kings without them suspecting a thing (or perhaps not caring enough to stop it). Just then, Bennet makes the conclusive discovery of all his years of research on creating the ultimate being and asks Raidou to call forth Alice. Meeting after so long, Bennet is overjoyed to see his dear. Alice asks about the man on the other room; Bennet explains that he built the mechanical arms attached to him, but never intended the function of the arms saving a copy of the previous owners' consciousness and then taking over a body to fulfill his wishes.

Back to the reason he called her, Bennet discovered the way to make the strongest being on the planet: he needs to become a tumor on her feet arm. Alice immediately agrees to this "demon fusion". Meanwhile Raidou notices a loyal agent of the kings on his way to investigate the projects going on the facility, and he must be stopped before they are force to abandon it.

Episode 12

After Raidou subdues Wesker Bravo, an unhinged scientist informs him that the man with the mechanical arms just left on his own. With that out of the way, he's sad that Wesker won't see the truth about their cause, so he's decided to make him see. Dragging him into another room, Wesker gets to witness the birth of the ultimate lifeform firsthand and be consumed by it: Lucifer.

Episode 13

Raidou, Lucifer, and Jacket ambush the Kings' most loyal soldier, Joshua Graham, who carries one of the tag-team belts. Graham refuses despite the numbers game and vows to exterminate them by himself. Before Lucifer gets to use his newly-acquired power on him, V. Angelo and M'Rizen arrive and talk about cocks, to the annoyance of everybody including Graham.

Still, the chaosgang wins the match and Jacket makes away with the new title.

Episode 14

Raidou and Lucifer pay tribute to their old rival Majima by visiting his grave... by dancing over his grave wearing boots infused with his soul that they took from the Reservoir of Souls. Graham had followed Lucifer after his loss, and chastises him for falling low enough to mock a man who could've been a warrior of God and disrespecting his memory, and wants to issue a challenge to Lucifer. He accepts and asks Raidou to head to the Coolsville Arena for the ultimate battle to let him show Graham the full extent of his power.

True to his world, Raidou becomes #1 contender to the /v/ title later that night.

Episode 15

While the BANS Army is gathered in their locker room, Rando is busy helping the clowns on a secret task to defend the belt, and Raidou thanks Kotomine for choosing Lucifer, the ultimate lifeform, to represent them by not only being #1 contender but also joining Jacket on the tag-team championship.

Kido and Gat end up taking the belts from them as BANS' specially chosen and trained team.

Episode 16

Lucifer questions Jacket's power for causing them to lose the titles, and Jacket attacks him backstage, but Lucifer has the upper hand and wins. However, they drag the fight into the ring where Jacket comes out on top after a fight in a cell.