Luna is the twin sister of Leo. She is a Signer and can also communicate with Duel Monster Spirits. Like her brother she also admires and supports Yusei Fudo. Luna specializes in a Spirit Deck.
In the English dub of the Yu-Gi-Oh! 5D's anime series Luna was originally voiced by Cassandra Morris. After her move to L.A. she wasn't able to constantly travel between L.A. and New York so the role was recast. Luna is currently voiced by Eileen Stevens.