Dear Lord how to get this started. Think I'll go with the flow set before me:
Name: Billy Marsh a.k.a. Horrorshow
Allegiance: N!tv? Xwf...I'm freelance?
Occupation: Trying to be clever and get paid for it. I did say "try".

Appearance: A light-skinned African-American gentleman on the gaunt side. He wears typical "Joe Anybody" clothing as that best fits his everyman's style of humor. His only visible aberration are his extended canines, or as he calls them: "They're fricking Vampire teeth! What, pray-tell, else would YOU call them?"

Eruption: Billy Marsh attempted to kill himself mid December 2006. The subject gets brought up in interviews occasionally, and his usual retort usually revolves around him just being really bad at dying..."But hey, I keep trying, right?" His eruption was relatively quiet.

(Warning: stuff implies you watch a LOT of N!tv or XWF...otherwise you might not know the man. I almost wrote this with "What the Hell does his resume look like?" in mind.)
Stuff: Horrorshow is very much the entertainer...when he's allowed to be. Not a megastar in any respect, he still has a fairly good cult following that still allows for t-shirt, action-figure, and a film re-release series licensing after his name and reputation.
Horrorshow was a complete film addict before and after his eruption...his charisma and ability to make the macabre somehow funny got him his original show "N!credible Horrible Moments", a show that highlighted a week's worth of Nova violence, bloopers, or other painful thing that the casual viewer might have missed. He was a guest host for 2009-10 Mardi Gras and is still on of the resident Halloween N!tv hosts.
After that show was cancelled in 2011, he pitched his next show:
"N!saNe!" also known as "Scaring Monsters", where he would literally sneak up on the scariest most monstrous Novas (as judged by an secret N!tv poll) and try to scare the crap out of them...and survive. While N!tv chose not to air the program due to lawsuit-related issues, a Japanese station did pick it up and Billy Horrorshow co-hosts it now under it's new title, which translates roughly to: "Piranha-Death-Nest-Nova-BOOM". Also in 2011 he had a short stint during the N!tv "Celebrity XWF"...where his entertainment value was declared more successful than his combat prowess, despite a few wins over some of the "less militant" members of the N!tv circuit. He currently is a regular guest-commentator for the XWF.
In short: sort of a fringe pseudo-celebrity than a real one.

Known Powers:
Billy Horrorshow's power set seems be balanced between instilling Fear, being entertaining, and being something straight out of a bad B-monster movie. He is seemingly impervious to all forms of damage: just not all at the same time. Anyone watching XWF would know of a certain Soap Opera Nova proving that Billy Horrorshow might be able to make himself invincible against one type of attack, but not two types at the same time. Kinda sucks having yourself on the screen all the time, doesn't it? Other often seen powers include various forms of faking his own death/defeat through illusions or assuming a "corpse-form" as he calls it, the ability to manipulate ambient lighting and sound, and the ability to easily know what fears those around him possess. He has a supernatural stage-prescence...but who doesn't on N!tv?

Oh, and why the hell is he here? Hospitalization sucks, I fucking swear.

One more thing: points to anyone who can tell me what the Japanese name mentioned above would be in actual Japanese. PM please: I'm curious as hell about that now.