"Gearfried the Swordmaster" (center) and the armor of "Gearfried the Iron Knight".
"Gearfried" is a series of monster cards that represent the various forms and evolutions of the card "Gearfried the Iron Knight". Each member of the series (except "Gilti-Gearfried the Magical Steel Knight") has an effect that revolves around Equip Cards, varying from being unable to use equips to instant monster destruction upon being equipped to using an equip to negate Spell and Trap Cards that targets monsters. In the second series anime, Joey Wheeler recited the story of Gearfried; he wore a special armor, which comes in the form of "Gearfried the Iron Knight", to lock away his tremendous power. His true strength is then revealed in the form of "Gearfried the Swordmaster" through the use of "Release Restraint".