Card Trivia:Machine King

"Machine King":

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• This card has an upgraded version known as Perfect Machine King as well as a prototype form, Machine King Prototype.

• Mechanicalchaser, Robotic Knight, and Cyber Soldier all serve under him.

• A promotional version of this card has its name in white.

• This is the only monster of its "evolution" line to get its ATK increased without having any other Machine monster on the field.

• Machine King could be based on the transformer character Optimus Prime, Not only are they similar in appearance but both are leaders of machines.