Roco is a female Roborovski hamster Sweetspet composed of orange macarons. She possesses light orange fur covering her belly, tail, paws, and head, with orange coloring on her ears and body. Her eyes are a distinctive orange-red, complemented by cream-colored hair. For accessories, she wears two pink flowers securing her hair and a blue beaded necklace featuring an orange-red diamond-shaped jewel.

She hails from Sweetsland and was born on November 11th as one of quadruplet siblings named Mako, Kako, and Koron. In official media, Roco typically appears in minor roles. She debuted in episode 38a of *Jewelpet Sunshine* during a Christmas party sequence. Later, she appeared in episode 19 of *Jewelpet Kira☆Deco!*, offering sweets to stars.

Her most prominent role occurs in the film *Jewelpet the Movie: Sweets Dance Princess*, where she serves as a lackey for Duke Crème de Brulée alongside her siblings and the Sweetspet Chocola.