The Crown Machine Soldier, further enhanced and modified in anticipation of a battle against the Evil Dragon of the Underworld, is equipped with a magical gauntlet for mechs called a "Pot Holder" on its right arm and wields "Rhongomyniad," a spear known as the dragon-slaying spear, which was found in the treasure vault of Britis Castle, as it challenges the Evil Dragon to battle.

The Crown Machine Soldier was deployed to intercept the Ferocious Machine Soldier that appeared at the coronation ceremony. Because the coronation ceremony was in progress, it deployed on autopilot without Crown Knight Freedom present, but was caught in the Ferocious Machine Soldier's self-destruction and destroyed.