Chalce is a prominent antagonist in the animated series and holds the position of an administrator within the Explorers, a mysterious organization. She is recognized for her composed, calm, and collected demeanor, a trait that distinguishes her among the other administrators. Unlike her more volatile colleagues, Chalce is an observer who prefers to analyze situations from the sidelines rather than acting impulsively. Despite her composed exterior, she possesses a sarcastic sense of humor and is not afraid to be critical of her allies when they fail in their missions, often questioning their judgment or performance directly.

Chalce's role within the Explorers frequently casts her as an intellectual and a gatherer of information. She specializes in subterfuge, surveillance, and research, often working closely with her fellow administrator, Spinel. The two share a professional alliance built on their mutual skills in espionage and strategic planning, and she often acts as his right hand in complex operations. Her personal motivations appear to be tied to her past before joining the Explorers. It is revealed that she was once a schoolteacher, and after her school closed due to a lack of funding, she was recruited by Hamber with the promise that she could earn enough money to build a new school. This backstory suggests that her primary drive is financial, aimed at funding her dream of re-establishing an educational institution.

Throughout the story, Chalce participates in several key missions for the Explorers. She was part of the operation near Levincia that used a special machine to generate energy mimicking the legendary Pokémon Terapagos, successfully summoning the Black Rayquaza to battle. She also takes on an undercover role, infiltrating Naranja Academy as a teacher to forge enrollment permits for her colleagues and to steal data regarding Terapagos from the school's systems. On another occasion, she helps Spinel separate the main protagonist group to further the Explorers' goals and later steals sensitive research data while her partner Pokémon stalls the heroes.

Chalce maintains a professional, if sometimes tense, relationship with the other administrators. She works alongside the hot-headed Coral and the steadfast Sidian on field missions, such as the attempt to capture the Black Rayquaza. Her interactions with Spinel are more frequent, as they often monitor the progress of other members like the young prodigy Amethio. In the internal power struggles of the Explorers, Chalce has proven to be loyal to Spinel's agenda, assisting him in schemes to eliminate rivals and manipulate events to their advantage, demonstrating a cold and calculating nature.

In terms of notable abilities, Chalce is a capable Pokémon Trainer whose main partner is a Medicham. Like its trainer, the Medicham is calm and reserved, using its psychic powers in battle. Its known moves include Psybeam, Zen Headbutt, and Confusion. Chalce has demonstrated the ability to use this Medicham to create barriers with its psychic abilities, block attacks, and separate opponents from their allies. Later in the series, she is also shown to possess a Xatu, which she primarily uses to teleport herself away from danger or to escape after completing an objective. She is also a key operator of the Explorers' advanced technology, including devices designed to attract legendary Pokémon.