The original artist of Mario.EXE ( Shadow-Shana) is OK with their art being used, as long as credit is given.His face contorts during his poses and when he laughs. He wields a sharp cleaver knife in his blood-stained hand, and is also taller and paler than normal. He has blood leaking down his eyes and mouth the former of which is an empty void with small red pupils, and the latter being fanged. Mario.EXE appears similar to his standard counterpart, but with darker colors. He is the opponent of the song It's A-Me and an unnamed upcoming song. In Mario's Madness, Horror Mario, now known as Mario.EXE, is a demonic entity that resides inside a cursed cartridge and ends up in the possession of Boyfriend and Girlfriend, who are drawn into his world of madness to revel in his suffering.
He originates from an art piece on DeviantArt made by Shadow-Shana, with the name Super Horror Mario, which is commonly used for YouTube thumbnails about Mario creepypasta games. Mario.EXE is the main antagonist of the mod.
