Rico, identified as Diana Worthy in English adaptations, lives on a rural ranch with her father, Pops Worthy, which becomes the protagonist’s initial landing site on Earth. Often thrust into hazardous scenarios, she relies on the protagonist’s aid to navigate or defuse crises.

Episodes like *Operation Rico* and *Rico’s Adventure* feature her adopting investigative roles, including masquerading as a detective to expose hidden schemes or obstruct enemies. Her alliances and confrontations with rivals frequently propel episodic plots, blending quick thinking with sporadic impulsivity.

The ranch anchors recurring team-based strategies to counter threats, with Rico aiding missions against extraterrestrial invaders, mystical entities, and advanced tech hazards. Familial ties include an uncle linked to hydroelectric initiatives, though their relationship lacks elaboration.

Exclusive to the original series, the character transitions from relying on external rescue to sporadically spearheading confrontations against foes, though overarching narratives prioritize group cohesion over solo growth.