Pecorine, born Eustiana von Astraea, is the spirited leader of the Gourmet Guild, renowned for her infectious cheerfulness and insatiable appetite. As the displaced princess of Landsol, her identity was erased by the antagonist Mana, prompting her adoption of the nickname "Pecorine"—derived from "pekopeko," a Japanese term evoking ravenous hunger. This trait is magnified by her Royal Equipment, regalia that heightens her physical prowess but drains caloric reserves at an accelerated rate.

Her exuberant personality masks profound emotional depth: she radiates relentless optimism and unwavering loyalty, forging bonds through affectionate gestures like embraces or carrying injured allies, though her disregard for personal boundaries occasionally tests relationships. Beneath this vivacity lies unresolved trauma from the loss of her family and kingdom, driving her fierce protectiveness toward companions.

In battle, Pecorine functions as a frontline tank, wielding her Royal Equipment to unleash devastating physical blows. Her Princess Form amplifies these abilities, trading heightened strength for even swifter calorie depletion. Signature techniques like "Princess Strike" and "Princess Valiant" cement her combat prowess, while her culinary mastery and foraging skills showcase a survivalist ingenuity that contrasts with her battlefield ferocity.

Her narrative arc traces a journey of self-discovery, reconciling her royal lineage with her guild life. After co-founding the Gourmet Guild with Yuuki, Kokkoro, and Karyl, she confronts her tragic past—her family’s assassination and Mana’s usurpation—while leading missions to safeguard allies, such as rescuing Yuuki from a lethal fall. These trials culminate in her reclaiming autonomy, embracing communal support, and aiding post-conflict reconstruction, marking her evolution from fugitive to resilient leader.

Interactions with guildmates reveal layered dynamics: her Genki Girl exuberance intertwines with vulnerability, particularly regarding fears of abandonment. Her bond with Karyl shifts from initial friction to steadfast reliance, epitomized by moments like carrying the injured mage or offering solace during emotional turmoil. Similarly, her rapport with Yuuki underscores a selfless protectiveness, often prioritizing his safety despite her own fragility.

Visually, Pecorine blends regal and rugged aesthetics—a tiara crowns practical armor, symbolizing her dual identity. Physical traits like a prominent bust and persistent cowlick align with "Buxom Beauty" and "Dumb Blonde" tropes, yet her tactical ingenuity in combat and talent for crafting furniture subtly defy stereotypes of naivety.