Card Trivia:Barbaroid, the Ultimate Battle Machine
- This monster appears in the artwork of "Ultimate Machine Union".
- This card's OCG/TCG Fusion Materials references the five monsters used to Fusion Summon this card in the Yu-Gi-Oh! GX manga: "Einroid", "Zweiroid", "Dreiroid", "Vierroid", and "Fünfroid", whose names are the German words for the numbers "1" through "5".
- This card's OCG/TCG required Machine "roid" monsters as Fusion Material was most likely done to avoid using non-Machine "roid" monsters (such as "Dark Jeroid", "Elemental HERO Necroid Shaman", "Magical Android", and "Salamangreat Zebroid X") as Fusion Material.
- This card's OCG/TCG artwork is taken from Yu-Gi-Oh! GX chapter 57: "The Exchange Battle Heats Up!!", specifically from the panel showing this monster being Summoned.