Glassun is Cure Fortune's fairy partner in the film "Eiga HappinessCharge PreCure! Ningyō no Kuni no Ballerina," supporting her in battles and activities. She resembles a panda-like fairy with a bright lavender curl and matching dress, accessorized with a deep lilac bag and purple sunglasses usually perched atop her head. These sunglasses sometimes slide down, complementing her characteristic "tough person" poses—folding her arms or crossing her legs while flying to mimic leaning against a wall.

Her personality blends friendliness with a delinquent edge, marked by masculine speech patterns. She uses the pronoun "ore" and endings like "-ze" and "-zo." She often assigns nicknames, calling Shirayuki Hime "ohime-chan" and referring to most girls besides Ribbon as "Ojou-chan." Her usual speech may soften during serious or worrisome moments.

Within the movie, Glassun demonstrates her bond with Cure Fortune through specific interactions: complimenting her style in a dress and inviting her to dance, which they share. This underscores her supportive and mentoring role. Glassun also displays the ability to sense Saiarks during the film's events, contrasting with her earlier inability in the series.

Her broader relationships include a long-standing friendship with Ribbon, as both originate from the Blue Sky Kingdom. They frequently spend time together, sharing concerns like distrusting Phantom and observing him vigilantly. Glassun also holds deep admiration for Cure Tender, Cure Fortune's predecessor.