♪ You got that long hair slicked back white t-shirt… ♫
MadPat is a killer. He flat out takes pleasure in seeing others die (see FNAF the musical). AntiMatter is a whole nother deal. He's cunning. Slow. He likes to watch people suffer, but in a manipulative way. Turn people against one another, then kill them. Still joy in awful things, but different. I've got a fic for this.