Antoinette Dumoulin-Gauthier is one of the allies of the Beast Arcade Rangers. She is the owner of the Cyber Lounge Game Cafe and is a complete game fanatic. She is from France, her hometown being the beautiful captial city, Paris. She is shown to be a very upbeat woman who offers the Rangers most of her well known milkshakes, desserts, burgers, and even some of her French entrees. Antoinette shows her love and pride for France and isn't afraid to show off her roots such as breaking into French phrases. Throughout the series, Antoinette starts to develop feelings for Takagami Kazuhiro.