Ishiki Erishi, known as Ishiki Eriito in the Japanese version, is a Ra Yellow student.
Ishiki makes several cameos in the anime as an unnamed character. He watched the duel between Jaden Yuki and Dimitri with America Uchimura, was one of the Ra Yellow students beaten by Chazz Princeton as a member of the Society of Light, and was one of many students who were transported in second alternate dimension and became a Duel Ghoul.
Ishiki appears as an opponent who can be faced from the beginning of the game. He is easier to find during the weekends.
- Ishiki uses this Deck at the beginning of the game.
- When the player defeats Jinzo, Ishiki switches to this Deck.
- Once the events involving the Shadow Riders begin, Ishiki uses this Deck for the rest of the game.