Curse of the Skull Bust-Ups

These are the "Friday! Halloween Bust-Ups"

Series 1

 * 1) Octafriday
 * 2) Friday as a Demlin
 * 3) Friday as The Mysterious Killer
 * 4) Friday with a knife covered in blood
 * 5) Friday as Jigsaw Friday
 * 6) Friday with Gorgon Staples' decapitated head

Series 2

 * 1) Monday as The Devil
 * 2) Friday as Rambozo
 * 3) Homer as The Homey Bot
 * 4) Pop as Were-Stuffy (aka "The Wolf-Pop!")