Megane-kun, localized as Dexter, features distinctive dark fur markings around his eyes that resemble glasses. This trait inspired his Japanese name, meaning "spectacles," and aligns with his ownership by Curtis, whose family operates an optometry business.

As a member of the Ham-Ham group, Dexter consistently displays intellectual refinement and analytical problem-solving skills. His knowledge and strategic thinking frequently establish him as a key advisor during the group's challenges. This role often sparks conflict with Howdy, another hamster known for comedic tendencies. Dexter's seriousness contrasts with Howdy's humor, fueling recurring disputes, particularly during cooperative tasks like cleaning the clubhouse.

A central aspect of Dexter's interactions involves romantic tension with Pashmina. Both Dexter and Howdy actively compete for her attention. While Pashmina initially seems unaware of their affections, one narrative development reveals her growing regard for Dexter after he assists her during a perilous situation. This romantic dynamic remains unresolved.

Throughout the series, Dexter's intellectual contributions remain stable. He mediates disputes, formulates plans during adventures, and offers reasoned perspectives. His rivalry with Howdy evolves from pure antagonism toward occasional cooperation, though fundamental personality clashes persist. No substantial backstory or origin details beyond his ownership by Curtis are explored. He appears across the franchise's primary television episodes, maintaining consistent core traits.