A mechanical lifeform known as a male Metal Cardbot, standing at a height of 9.5 meters. His red outer armor is heavily adorned with orange and yellow flame-shaped plating as accents. He was once the king of a small kingdom, but that kingdom was destroyed by a beast-like mechanical lifeform called a Wild Cardbot, and he lost his adopted daughter in the process. He wears a small golden crown that seems mismatched with his large stature, and he always keeps his eyes narrowed with such intensity that his pupils are invisible. When transformed into a vehicle, he is a red trailer truck, though his speed is abnormally fast for a truck. Once he becomes close to someone, a playful side emerges; if he catches an opponent's weakness, he will occasionally tease them relentlessly about it. His concern for others is strangely high, to the point where he might sacrifice everything he has for them. He feels flustered or panicked when presented with a flower ring or told someone wants to break off their friendship. This stems from a trauma: just a day before his kingdom was destroyed, his adopted daughter gave him a flower ring as she did every day. Before he left for a massive battlefield where she and the kingdom were lost, they had a disagreement, and she told him she wanted to break off their friendship. He intended to apologize after returning from the battlefield, but he lost his kingdom, his people, and his daughter all at once, leaving him with deep scars. Despite his large size, he has excellent athletic ability and immense strength, using a sword carried at his waist as his weapon. His first technique is Fire Blade. By automatically igniting his sword, the pain inflicted on the opponent is doubled, combining the agony of burning and cutting. His second technique is Magma Shield. By swinging his sword in the air and plunging it into the ground, a barrier as hot as lava is formed around him. He is surprisingly shy and feels a strange mix of guilt and pleasure when called 'Dad,' but most of all, he vows never to lose anything again. One of his hands is wrapped in bandages; if removed, it reveals numerous scars from sword cuts and burns. Usually stoic, calm, and meticulous, he displays the dignity of a king, but once close, he reveals a sensitive side that is prone to crying and sulking. He speaks with a regal tone, using endings like '~ne, ~gun, ~ineman.' He is a bit of a crybaby. As a mechanical lifeform, he cannot eat human food and instead consumes petroleum, batteries, or oil. However, his habit of skipping meals is a weakness. As a machine, he wears no clothes and has no hair. His entire body is composed of thick, hard armor plates, and his eyes are visors rather than organic eyes. Nevertheless, he is capable of shedding tears or blushing.