Coron is a male Roborovski hamster Sweetspet made of brown macarons. His physical traits include tan fur covering his belly, tail, paws, and head, complemented by caramel brown ears and body. He possesses brown eyes and cream hair, typically wearing a blue pearl necklace featuring a brown club-shaped jewel.

Originating from Sweetsland within the *Jewelpet* franchise, Coron shares a November 11 birthday with his quadruplet siblings: Mako, Kako, and Roko. He appears in *Jewelpet Sunshine* episode 38a, attending a Christmas party. His primary role occurs in *Jewelpet Kira☆Deco!* episode 19, "Grand Sweetspet Gathering Deco!", where he serves sweets to stars during the gathering event. Coron also features in *Jewelpet the Movie: Sweets Dance Princess* as one of Duke Crème de Brulée's lackeys alongside Chocola, Kako, Mako, and Roko, participating in the Duke's efforts to overthrow the Sweetsland kingdom, though his specific plot contributions are minimal.

Coron's character remains consistent across media, primarily fulfilling minor comedic or background roles without significant individual development or standalone story arcs. His quadruplet siblings frequently appear alongside him, emphasizing their collective identity as Sweetspets within service narratives. His confirmed appearances are limited to the specified media.