Made in high-contrast color palette, Pleinair-San figure features vivid purple hair with pale lavender highlights, a flowing cape, and a compact magical staff. The sculpt captures a breezy, dynamic pose that suggests motion, with base designed like a rocky outcrop from the Netherworld. Fine shading on hair, outfit, and accessories reveals careful airbrushing and panel lining. The character's expression is cheerful yet enigmatic, with glossy eyes and a hint of mischief. The costume combines frilled sleeves, layered skirts, and small accouterments that nod to her in-world role, all cast in durable PVC/ABS materials. The paint finish includes matte and high-gloss accents to emphasize metallic elements and magical artifacts. The overall silhouette reads powerful yet approachable, making it a centerpiece for display shelves and a faithful rendition for fans of Makai Senki Disgaea.

Within Makai Senki Disgaea, Pleinair-San emerges as a peculiar ally whose origin lies in the hidden corners of the Netherrealm. She moves between factions with ease, using charm and cunning to diffuse conflict or gain an advantage when needed. Her backstory reveals a long apprenticeship under a legendary artificer, which explains her talent for crafting small wards and talismans that protect allies in battle. Despite her lighthearted demeanor, Pleinair-San harbors insecurities about trust and loyalty, having been betrayed by a mentor early in life. Over the course of the series, she forms bonds with the main cast, sharing key information and sometimes taking risks to shield friends. Her growth centers on choosing a path of genuine courage rather than clever tricks, making her a beloved, multi-dimensional figure.