The Metal counterparts are a small series of Semi-Nomi monsters that can only be Special Summoned by Tributing the corresponding card when it is equipped with "Metalmorph", some saying these cards were "metallized". These monsters could be considered precursors to the "/Assault Mode" archetype.
In the manga, the card "Metalmorph" turned the equipped monster into a metalic version of itself, causing it to gain 400 ATK and DEF and immunity to magical attacks.
"Magic Metal Force" worked the same way as "Metalmorph" did in the manga, giving the equipped monster 400 ATK and DEF + 1 Level and immunity to magical attacks.
"Metalmorph" worked as it does in the OCG and TCG, giving the equipped monster 300 ATK and DEF, plus half the ATK of a monster it attacks for the duration of the battle. Certain monsters equipped with "Metalmorph" can be Tributed to Summon another monster from the Deck, which is the same as their "Magic Metal Force" counterpart.
In the OCG and TCG, "Metalmorph" worked the same way it did in the anime. The equipped monster gains 300 ATK and DEF, plus half the ATK of a monster it attacks for duration of the battle. Certain monsters equipped with "Metalmorph" can be Tributed to Summon another monster from the Deck, which is Machine-Type and has 400 more ATK and DEF than the original monster.
If the player does not have the actual card for the metal counterpart, they can Summon the monster using the aforementioned method. If they have the actual card, they can Summon it normally, without using "Metalmorph".
