- Magician's Circle
- Magician's Valkyria
- Magnet Circle LV2
- Magnet Conductor Plus
- Magnet Force
- Magnet Force Minus
- Magnet Force Plus
- Magnet Reverse
- Magnet Warrior Σ+
- Magnet Warrior Σ-
- Magnet Warrior Ω-
- Maha Vailo
- Maiden in Love
- Maiden of the Aqua
- Majestic Dragon
- Majestic Jester
- Majestic Red Dragon
- Majestic Star Dragon
- Makiu, the Magical Mist
- Makyura the Destructor
- Malfunction
- Malice Doll of Demise
- Mammoth Graveyard
- Man-Eater Bug