The Supreme King's castle is a castle in the alternate dimension in the Yu-Gi-Oh! GX anime. The Supreme King rules the dimension from it. It makes it first debut in MCF: The Return of the Supreme King and returns in MCF: Yubel's Revenge.
Nothing much is known about the Supreme King's castle except it is where Jaden Yuki under the influence of the Supreme King and rules from it.
MCF: The Return of the Supreme KingEdit
The Supreme King's castle is a major setting as Tracy and the others find Jaden under the influence of the Supreme King once again. Tracy is eventually forced into a duel knowing that it's the only way she could free Jaden. Before this, it is seen in a few flashbacks through Jaden and then through Tracy as she tries to find Jaden in the Duel Monster Spirit World.
MCF: Yubel's RevengeEdit
The Supreme King's castle is featured in the same role as it is in the show but it is the home to Jaden and Tracy under the influence of the Supreme King and Supreme Princess until the two are rescued from Axel, Tricia, Zane and Aster.
- MCF: Return of the Supreme King (Debut)
- MCF: Yubel's Revenge (Return)