Lady Marquee is one of the players in the Big Gallup Tournament, during which she is defeated by Sonata. Her appearance is only shown once, at a distance with the other Big Gallup players during the pirate invasion of the Solarium Club. She is white, average height and has black hair.
- Lady Marquee is played by Katie Riffey
- During part of the pirate invasion dream, Lady Marquee is unique in that for part of it she carries a spear; none of the other players change their behaviour for the whole thing or are shown to carry any weapons in this way.
- She may be Prussian, as when she was playing against Sonata, she was noted to have given her the "Prussian rubdown".
- Lady Marquee appears to be royalty of some kind; she is shown losing her "royal limousine" to Sonata, has the title "lady" and threw a lot of money around during the Big Gallup tournie, seemingly without caring.