Card Trivia:Yggdrago the Sky Emperor (R)
- This is one of the cover cards of Maximum Ultra Enhancement Pack.
- This monster appears in the artworks of "The Menacing Eyes of the Sky Emperor" and "Transmigration of Curiosity" in Maximum Mode (together with "Yggdrago the Sky Emperor [L]" and "Yggdrago the Sky Emperor").
- Along with "Yggdrago [L]" and "Yggdrago", this monster is based on Yggdrasil, the immense tree that connects the Nine Worlds in Norse mythology.
- This monster's Level and the Level of "Yggdrago [L]" add up to 7, referencing the series' title Yu-Gi-Oh! SEVENS.