Maker.exe is a corrupted version of Mario that was born as Maker.exe when he found a gap in one of his levels that lead to a incomprehensible black dimension where he found secret codes, and having received them he gained great power. He gained the ability to create his own levels without the help of a person behind the screen. Now, he creates the level, "100 Levels Challenge" to trap people and watch them fail and suffer to his amusement.