Chinman

Chinman is a famous 4chan screencap.

Chat already sees interest in him, as they think he is the second coming of a type of autist similar to Chris-chan. Be wary around him at best, as he cannot get a girlfriend, just like Chris.

And after 3 years of waiting, he is finally here.

Chin Killer
"Chinman" was once a simple NEET virgin, until he decided to change his fate.

Living in a house with his best friend "Maroon 5", he would reach a turning point when a redhead moved into the neighborhood and shot down his advances to go for his friend instead. He started stalking a nearby neighbor shut-in, but this just brought him further down in his descent when he unintentionally broke in and was turned away. He changed his looks and went for the redhead's friend, but even after spending a night with her, she just appeared disgusted and whispered M5's name. He had finally reached his breaking point, next day come proceed to set a delayed fire in the house, and silently waited for them to arrive as while humming a tune. As he watched them arrive and burn, he got his fiery redemption. Afterwards, he became everything that he wanted to be, meanwhile M5 might or might not be aware of what he did but he's too depressed to even get up.

Off-Season 2
In this alternate timeline, Jackson "Chinman" Kiryu was born son of Kazuma Kiryu and Julianne Stingray in Cope Island, and is merely a child, awaiting his opportunity to become loved.

Off-Season 8
After nearly 8 seasons, he's finally here.

Episode 28

Maroon 5 finally got the courage to overcome his depression enough to confront Chinman if he really did start the fire, and to set the dispute he challenged him to a match.

Although settled, Chinman is unapologetic and his fire might burn again...

Trivia

 * Chinman was at one point an idea for one of the earlier seasons (probably 3 or 4), but it didn't find a place or OP simply forgot.