Duke

Duke is a red-and black frog who is the Chocolat's familiar. He helps her steal hearts, but isn't much help at the beginning. He has a rivalry with Blanca. Mostly, he is quite lazy and rude, and has an extensive knowledge about hearts which proves useful later. Duke is actually the little brother of Cinnamon who was transformed into a frog. At the end of Volume 6 he is returned to his human form via a white heart.His real name is Poivre which is French for pepper. Duke is English for a noble rank.