Real Name: Paul Nielson
Powers/Special Skills: can cause a person to laugh himself to death
Special Weapons/Tools/Armor: none
Affiliations: Circus Macabre
Other Aliases: Scooter the Clown
Status: at large
Circus Macabre is a group of sadistic supervillains who put on a deadly three-ring show. They lure in their victims with promises of a circus unlike anything ever seen, and it is truly a strange, dark, wonderful spectacle until the attack. Then the audience is subjected to horrible atrocities, robbed of all of their belongings, and massacred.
Paul was once a happy clown, performing at kids birthday parties as Scooter the Clown, making balloon animals, telling jokes, etc. His life was fine until he discovered his wife was cheating on him. When he confronted her, she laughed at him and asked if he really believed she could be faithful to a professional clown who made very little money.
Devastated, Paul moved out of his home and ventured out on his own. But he could not motivate himself to make others laugh when he himself was severely depressed. Soon, that sadness turned to anger at his unfaithful wife. Paul sold his soul to the demon Loki in return for a way to have revenge on his wife and her lover. He was given the power to make anyone laugh so hard it would have terrible effects on his or her body.
He confronted his wife and her other man, and before long they had literally laughed themselves to death. Autopsies would reveal massive brain hemorrhaging. Now awaiting an eternity in Hell, Paul figured he might as well enjoy the rest of his life, and he began to terrorize the world. The Ringleader, head of the Circus Macabre, discovered and eagerly recruited him. He changed his name to Hysterix and now is happily murdering circus audiences at his leisure.