|Video game debut|
Ruler of Machines
Machine King is a character version of the card, "Machine King".
Machine King appears in the video game, Yu-Gi-Oh! World Championship 2008. He appear as a Tag Duel opponent and his Tag partner is Perfect Machine King. They can be unlocked if the player has beaten the team known as, Law of Light five times. Their team name is Ruler of Machines.
In World Championship 2008, Machine King uses a Machine Deck titled, "Duel Machines".