• This card is the only monster of its "evolution" line that counts towards its own ATK-increasing effect.
  • This card can be considered similar to "Dark Ruler Ha Des"; both rule their respective realms, and have at least three notable servants (for "Ha Des": "Dark Resonator", "Opticlops", and "Berserk Dragon"; for "Machine King": "Mechanicalchaser", "Robotic Knight", and "Cyber Soldier").
  • The Duelist League 4 version of this card has its name in white.
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