Reina is a Silver Claimer. She became a member of Demon Card and the Oracion Six to avenge the injustice done to her deceased father, as well as to find the silver ship Silver Ray (her father's greatest work), whose theft her father was unjustly accused of. She has an issue with Musica, as his mentor Rize is who Reina believes to be the true culprit behind the theft of the Silver Ray, and hence is privy to its location. She uses the Six Star Dark Bring White Kiss, which she uses to create silver out of thin air, which she then manipulates to create silver weapons.
Reina puts up a casual, cheerful and flirtatious front, exploiting her sexuality to it's full advantage and often becoming annoyed when she fails to charm people over. However, she is devious and calculating as well, and not to be underestimated.