Seria is a member of the Arcadia Movement, appearing in Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia and Yu-Gi-Oh! 5D's World Championship 2011: Over the Nexus.
Seria and Sayer perform tests on the player. Seria deduces that the player is communicating with the Spirit World. After the player wakes up, Sayer orders Seria to take them to their room, but also make sure that nobody realize that the player is not a Psychic Duelist.
By the end of the game, she has left the Arcadia Movement and gets a new job working at the Stadium, where the player can find her in WC 2011 and play her side event to help her find a husband.
Seria plays a Mill Deck, titled "Auction Price!".
Reverse of Arcadia
Over the Nexus