Ratie Curti is one of the main antagonists of Season 4 and one of the four members of the Quatre Knights. A famous Central Asian Cardfighter who is often disqualified from her matches because of her love of doughnuts, as she tends to prefer eating doughnuts instead of attending her battles. In spite of this, various world-class fighters including Kenji Mitsusada acknowledge her skills, earning her the nickname "Uncrowned Witch".