Carol is a minor character who resides on Shamuti Island, located in the center of the Orange Islands. She is the older sister of another island resident named Melody. Physically, she is depicted as a teenager with brown hair that reaches her neck, spiky bangs, and green eyes, and she wears earrings.

Carol holds a position of responsibility within her community as the head of the festival celebrations on Shamuti Island. These festivities center on the three legendary bird Pokémon—Moltres, Zapdos, and Articuno—and their tamer, Lugia. Historically, Carol herself played the key role of the Festival Maiden, who leads the ceremonies. However, she is described as having become too old for this specific role, and her younger sister, Melody, has reluctantly taken her place as the Festival Maiden.

Her role in the story's plot is limited but supportive. Initially, she does not become directly involved in the main conflict. However, she permits Melody to leave the island to find Ash Ketchum and assist with the unfolding crisis involving the legendary birds. For the remainder of the film, Carol awaits Melody's return to the island. She is also good friends with another resident of the Orange Islands named Maren. After the main events of the story conclude, Carol appears briefly during the film's credits, where she is seen waving goodbye to Maren as she departs from the island. No information is available regarding her notable abilities, personal motivations, or any character development.