Duke

Duke is a red and black striped frog and Chocolat039s magical familiar. As her familiar Duke is supposed to try his best to help her collect as many hearts as possible but you mostly see him lounging around on her bed or sleeping. Instead of giving Chocolat advice he makes discouraging comments. He finishes all of his sentences with 039kero039 which is similar to 039ribbit039 in English. He fights a lot with Blanca and often calls her a rat. In the manga