M, also known as Mario.EXE (internal files) or Super Horror Mario (ingame), is the main antagonist of the Friday Night Funkin' mod Mario's Madness. While the original Super Horror Mario image never had any defined origin or backstory and CoolRash's Mario.exe was the real Mario turned into a demon by Satan, aspects from both of them are combined into one to form this particular character. Originally, he was the vengeful former business partner of Daddy Dearest whom the latter betrayed and sealed inside of an NES Cartridge. As of now, M's lore is being completely rewritten for the upcoming Resauce update, and is now no longer connected to Daddy Dearest in any way.