The character known as "Chico," often called Tico, is a diminutive anthropomorphic hamster-like figure clad in red dungarees. He acts as both loyal companion and lighthearted comic relief within the core group. A former circus performer, he partners with Rigodon in service to Willy Fog, though his pre-circus history remains undefined.

Chico exudes a childlike charm, channeling humor through his boundless appetite and single-minded fixation on snacks. Despite his antics, he repeatedly proves courageous in crises, aiding allies despite visible fear. His bond with Rigodon anchors his narrative presence, their camaraderie forged through shared circus experiences and depicted as a steadfast, heterosocial partnership.

A recurring motif involves an ancient Egyptian "sun clock" gifted early in his journey, which he obsessively references. While his Spanish heritage is central to the original iteration, regional adaptations frequently modify his nationality or accent. Throughout the series, he remains a steadfast source of plucky humor, retaining his role without undergoing personal evolution. No expanded media beyond the core series or its spin-offs delve into his origins or growth.