- This card is based on the castle of the alternative dimension, where Jaden Yuki resided while he was possessed by the Supreme King.
- This card's first effect of allowing the Fusion Summons of "Evil HERO" monsters with cards that are not "Dark Fusion" is a reference to the Supreme King using "Super Polymerization" to Summon his "Evil HERO" Fusion Monsters in the anime.
- The castle's appearance is used as a hub for the Yu-Gi-Oh! Duel Links event; D.D. Castle: Emergence.