Doquín hails from Planet Toys, a world inhabited by sentient toy-like beings. Made of doughnut-like substance, Doquín naturally possesses a round body. This character displays a simple, child-like personality primarily driven by fundamental urges, especially an intense craving for sugary treats.

Doquín primarily interacts with the central figures Nanda and Runda. Initially, the character often acts selfishly, prioritizing personal desires like acquiring sweets above all else. This single-minded focus sometimes leads to actions that unintentionally create complications for others.

The core of Doquín's story involves learning basic social concepts through experiences alongside Nanda and Runda. Exposure to their attempts at cooperation and facing the consequences of purely self-serving choices sparks a gradual shift. Doquín begins to grasp the value of sharing and starts considering companions' feelings.

Participation in shared challenges encountered on Planet Toys drives this growth. By the narrative's conclusion, Doquín demonstrates a noticeable increase in empathy and a newfound willingness to engage in collaborative efforts, moving beyond the initial fixation on personal gratification. This progression marks an evolution from a self-oriented entity to one capable of forming basic friendships and offering mutual support within the group.