Coron is a male Roborovski hamster Sweetspet crafted from brown macarons. He possesses tan fur covering his belly, tail, paws, and head, contrasted by rich caramel brown fur on his ears and body. His eyes are brown. Coron wears a distinctive blue pearl necklace adorned with a brown club-shaped jewel. He originates from Sweetsland, born on November 11 as one of quadruplets alongside siblings Mako, Kako, and Roko.

Coron appears solely in *Jewelpet the Movie: Sweets Dance Princess*. Within the film, he serves as a lackey for Duke Crème de Brulée alongside his quadruplet siblings and other Sweetspets including Chocola. His role involves supporting the Duke's schemes, such as attempts to overthrow the Sweetsland Kingdom and spying on Princess Mana's birthday celebrations. The movie provides no dialogue, personality traits, character development, exploration of his motivations, relationships, or any changes in allegiance for Coron.

Coron does not feature in any Jewelpet anime seasons (*Jewelpet Sunshine*, *Jewelpet Kira☆Deco!*, or later series), OVAs, spin-offs, light novels, or other franchise media beyond the movie. His quadruplet siblings fulfill identical roles and functions, with no individual differentiation in their background or actions depicted.