Pecorine, formally named Eustiana von Astraea, serves as Crown Princess of Landosol, a realm governed by humanfolk. She sports long, vibrant orange hair with a braid draped over one shoulder, light azure eyes, and a signature cowlick. Her regal attire includes a tiara adorned with a crimson ribbon, a layered white-and-red dress embellished with gold trim, and armored shoulder plates. A perpetual, ravenous hunger gnaws at her, fueled by the Royal Equipment she wields—a source of superhuman strength demanding relentless caloric intake to sustain its power.

Her origins trace to tragedy: assassins claimed her family, sparing only her. The Red Cat Brigade sheltered her until she crossed paths with Yuuki and Kokkoro, who christened her "Pecorine" upon witnessing her bottomless appetite. Embracing this moniker among companions, she founded the Gourmet Guild, uniting allies like Karyl through rescues and defending sites such as Elizabeth Park alongside Yuuki against monstrous threats.

Pivotal clashes define her journey, including battles against Christina Morgan, an assassin dispatched by the usurper masquerading as Landosol’s ruler. These confrontations expose her true lineage, pitting her against the false Eustiana von Astraea. Surviving a cataclysmic magical assault, she retreats to Sarendia Orphanage before rallying allies like Saren and the Mercurius Foundation to reclaim her throne, all while evading factions like Nightmare.

Radiating indomitable optimism, Pecorine charges into friendships with zeal, often sidelining her well-being to uplift others. She showers guildmates with fierce loyalty and embraces them freely, undeterred by occasional reluctance. Her palate masters culinary replication after a single taste, and she thrives in the wild, crafting meals from scavenged finds.

In combat, she wields a massive sword augmented by the Royal Equipment, which escalates her might—and hunger—when activated in "Princess Form." Though a stalwart tank, her reliance on raw power and endurance overrides strategic crowd control.

Growth emerges as she confronts fears of abandonment born from familial betrayal and identity theft. Bonds with Yuuki and Kokkoro teach her to lean on others rather than isolate herself. Beyond her core tale, she appears as a guest combatant in crossovers like *Granblue Fantasy* and *Dragalia Lost*, expanding her legacy through collaborative battles.