The raccoon outfit Cartman uses for the Coon bears some resemblance to Mario in Super Mario 3 - both have raccoon tail and ears - while Mysterion is basically Batman.
Coonicon - Comicon, er Comic Con
The boys crossed out so far, and why:
Jimmy and Timmy - both of them have handicaps that prevent them from moving nimbly.
Token - skin tone
Cartman - too fat
Others who should be crossed out:
Kyle - Mysterion went to visit him
Tweek - too spastic
Cartman accuses Craig, Stan, Kenny, Kyle and Clyde of being Mysterion, so one of them is definitely behind the mask. These five are also on Chaos' suspect list, but Kyle is ruled out above. Since Cartman didn't accuse Tweek or Jason, they can be ruled out too. The possibility of Mysterion being a girl didn't cross Cartman's mind until Wendy mentioned it, but there are no girl suspects on Chaos' wall.
Professor Chaos and General Disarray are now familiar figures in South Park.
Kenny has returned from last week's death. According to the rule of Kenny's births, he's clean - no syphilis.