Card Trivia:Metal Plus
- "The Snake Hair" appears in this card's artwork.
- This card's artwork likely references the myth of Perseus, a hero in Greek mythology who battles the Gorgon Medusa, whose gaze transforms people into stone. Perseus uses a polished shield to reflect Medusa's gaze back at her, allowing him to behead her.
- This card's Spell Card-negating effect references the earliest version of "Metalmorph" (or "Magic Metal Force"), which makes the equipped monsters immune to magical attacks.
- In the Yu-Gi-Oh! GX anime, this card, being a more powerful version of "Metalmorph" is used on "Red-Eyes Darkness Dragon", a more powerful version of "Red-Eyes Black Dragon". This references the usage of "Metalmorph" ("Magic Metal Force") in the original series, where it was equipped to Joey Wheeler's "Red-Eyes Black Dragon".
- The above-mentioned facts are further alluded by the Summoning conditions and the Spell Card immunity effect of "Red-Eyes Darkness Metal Dragon" in the anime. In the original series, "Red-Eyes Black Dragon" transforms into "Red-Eyes Black Metal Dragon" under the effect of "Metalmorph", causing it to be immune to magical attacks.
- In the Yu-Gi-Oh! GX anime, this card, being a more powerful version of "Metalmorph" is used on "Red-Eyes Darkness Dragon", a more powerful version of "Red-Eyes Black Dragon". This references the usage of "Metalmorph" ("Magic Metal Force") in the original series, where it was equipped to Joey Wheeler's "Red-Eyes Black Dragon".
