Dexter, originally named Megane-kun in Japanese, is a hamster characterized by distinctive blue-gray and cream fur. He possesses permanent tan markings around his eyes resembling glasses, which are natural fur patterns, not accessories. Dexter consistently wears a red bow tie. His owner is Curtis, an optometrist who operates a glasses store where Dexter resides. This environment informs Dexter's knowledge about eyewear, though his expertise extends to broader academic subjects. He demonstrates above-average intelligence, often offering scholarly insights like creating the Ham-Ham club motto in Latin. Dexter is generally well-mannered and helpful but occasionally reveals snobbish or sarcastic tendencies, particularly when interacting with his long-time friend and rival, Howdy. Dexter harbors a persistent romantic interest in Pashmina, another hamster. This affection fuels an ongoing rivalry with Howdy, as both compete for her attention. Their conflicts range from petty arguments over Pashmina to disagreements about Howdy's humor, yet they maintain an underlying friendship and protect each other when necessary. Pashmina typically ignores or mediates between them, showing no reciprocal romantic interest. This rivalry is most prominent in earlier seasons but diminishes later. Dexter once acknowledges Hannah, another hamster, as pretty but does not reciprocate her short-lived romantic feelings toward him. Hannah's initial admiration for his sophistication fades after perceiving him as cowardly during an amusement park incident. Within the Ham-Ham group, Dexter's role emphasizes intellect and occasional pretension, contrasting with Maxwell's reserved bookishness. His background as the pet of an optometrist and his residence in a glasses store remain consistent elements.