Linie is a small-statured demon who appears as a young girl. She has striking purple eyes and soft pink hair, styled with neat bangs and tied into voluminous twin-tails that reach her chin, each secured with black ribbons. A pair of small horns emerges just behind her twin-tails, marking her demonic nature while adding to her distinctive look.

Her outfit reflects a gothic Lolita style, combining elegance with a dark, ornate charm. She wears a white collared blouse with puffed sleeves beneath a dark brown dress trimmed with white frills. The dress opens at the front to reveal layers of white ruffles, and a brown corset is laced tightly over her waist. She completes her attire with red-and-brown striped stockings, Mary Jane shoes, and a brown ribbon tied neatly at her collar.

Around eighty years earlier, when she was a younger demon, Linie appeared even more childlike. Her hair was worn straight and loose, and her clothing was much simpler, consisting of a plain, long-sleeved dress paired with black shoes, giving her a modest and innocent appearance compared to her current, more elaborate style.

Linie uses Erfassen to perfectly mimic the captured movements of Eisen during her battle against Stark.

As one of Aura the Guillotine’s trusted subordinates, Linie is both a capable warrior and an adept mage. Despite her youthful appearance, she possesses considerable combat experience and tactical intelligence. Her fighting style combines speed, precision, and magical versatility, making her a formidable opponent in both close and ranged combat. Linie’s balance of physical strength and magical proficiency allows her to adapt quickly to various situations, reflecting the discipline and skill expected of Aura’s followers.

Linie possesses a refined sense for mana, granting her the ability to both detect and conceal it with remarkable control. Her mana detection ability is so acute that she was able to sense Draht’s presence from a distance and even noticed the moment of his death. Conversely, her mana concealment skill allows her to suppress her magical presence entirely, making her movements undetectable to even skilled opponents. She has used this ability to execute ambushes, most notably launching a surprise attack on Stark, catching him off guard despite his combat awareness.

Her physical prowess complements her magical abilities. Linie’s strength far exceeds what her small frame suggests, allowing her to fight toe-to-toe in close quarters with powerful warriors like Stark. Her combat style emphasizes agility, timing, and precision rather than brute force, enabling her to strike effectively while maintaining defensive awareness. Even in prolonged fights, she demonstrates exceptional endurance and coordination, traits that make her a well-rounded and dangerous adversary.

Linie’s most distinctive power lies in her use of the imitation spell Erfassen, which allows her to recreate the movements and combat styles of individuals whose mana flow she has observed. By materializing weapons from her own mana, she can mimic the techniques of sword, axe, spear, or knife users with uncanny accuracy. However, her imitations lack the full strength of the originals, preventing her from perfectly replicating techniques like Eisen’s Lightning Strike. She can only maintain one weapon form at a time, requiring a short pause to switch styles. Still, the precision of her mimicry, whether hurling a spear with pinpoint accuracy, striking with a sword’s heavy spin, or throwing knives aimed at vital points, makes Linie a highly unpredictable and dangerous fighter.