Metal King is a sword-wielding humanoid robot piloted remotely by Bofoi as part of his Metal Series squad, appearing in the webcomic's Robot Invasion Arc. Marked by the three-lens head shared across Bofoi's machines, it fights with an oversized blade and can take to the air, and it joins the squad Bofoi throws against Child Emperor's Super Brave Giant.
This unit is one of Bofoi's webcomic-only creations, operated from a distance by its maker and counted among the specialized Metal Series. Its build is humanoid, and it goes into battle carrying a large sword.
As with every robot Bofoi designs, a row of three lenses is fixed to its head, marking it as part of his lineup.
Metal King fights as a swordsman, relying on its oversized blade to engage opponents up close. It can also hover and take to the air. Bofoi speaks through the robot and links his other machines to it, gathering shared data to raise the group's combat effectiveness.
Bofoi is its creator and controller. When Child Emperor came to Bofoi's base and the two argued over his suspected hand in the robot invasion, the young hero deployed his trump card, the Super Brave Giant. Bofoi responded with a squad of robots that included Metal King. The fight lasted only moments before Genos, racing toward the base, drove a massive hole through the giant robot and destroyed it.

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Metal King is a sword wielding humanoid robot piloted remotely by Bofoi as part of his Metal Series squad. It is a webcomic exclusive machine that appears in the Robot Invasion Arc.
Metal King fights as a swordsman, relying on an oversized blade to engage opponents up close, and it can also hover and take to the air.
Bofoi is Metal King's creator and controller, speaking through the robot and linking it with his other machines to share data and sharpen the group's combat effectiveness.
Metal King has a humanoid build and carries a large sword into battle. Like every robot Bofoi designs, it has a row of three lenses fixed to its head.
When Child Emperor deployed the Super Brave Giant against Bofoi, Bofoi sent out a squad of robots that included Metal King. The fight lasted only moments before Genos drove a massive hole through the giant robot and destroyed it.
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