Coyote

"why are you filled with so much aggression and hatred? i'm finding it difficult to assume what you must have went through to mold you into the person posting right now."

- Coyote speaking to Demaro

Wile E. Coyote, better known as just Coyote, is stone cold. Even in the face of utmost danger, he remains utterly calm and collected. He is the peak of neutrality. Noting can faze him. Nothing can anger him. And he also has magic piss-colored Satan powers.

His Past
Coyote was once a simple guy with a simple goal; kill that fucking roadrunner. He failed, time and time again. In going out for a nightly drink with his friends Tom, Sylvester, Elmer, and Porky, Coyote gained Satanic powers through a ceremony. Due to his lax and calm nature, he easily adapted to them, while his friends Tom, Elmer and Sylvester would suffer due to showing more emotion, and Porky would later die from his own Satanic powers causing a witch-hunt.

Later on, Coyote would resume hunting down the Roadrunner, and eventually called the leader of the Troll Slaiyers, Shadow, to finish the job for him. After succeeding, Coyote supplied the Troll Slaiyers with resources needed for their attack on the Justin Bever concert. After saving Silver and Blaze from a group of Trolls with his fellow Neutrals, Coyote would later embark on a quest to save Elmer Fudd from the clutches of the trolls, who were planning to use Elmer to unfreeze the Man in the Ice, a previous Dragonborn. This is where he would encounter Demaro, who was out for Coyote's head. Coyote would engage in a fight with the demonic worshipper of destruction, lasting over several chapters (jesus christ).

Eventually, Coyote revealed Demaro never even once had a chance against him, forcing him to unleash his greatest weapon, the unholy entity Miladox. After summoning Demaro's brother Garry and using his abilities to his advantage, Miladox was defeated and both it and Demaro were stuffed in Coyote's book, free for him to summon at any time.

Season 6
Somehow, Demaro escaped the book. How? No one knows.

Episode 16
Coyote appeared to reclaim his slave Demaro, as well as take in a new member into his book in the form of Mario. He succeeded.

Episode 17
Coyote appeared once again, having taken over both Demaro and Mario, he set his sights on taking down The Headmaster and his compatriots the Head Doctor and Harrier Du Bois. After succeeding, he proceeded to enslave all three in his book, as well as free Nero, Vergil, and Dante.

Later on, Coyote would appear to give Tatsuya Suou power against Nyarlathotep, asking why the Crawling Chaos was filled with so much anger and hatred.

Trivia

 * Coyote is completely Neutral, neither Good nor Evil. He merely is.