Deep Self-Awareness and Humility: Traumatized by his failure as a 34-year-old shut-in (NEET) in his past life, Rudeus constantly monitors his own ego to avoid becoming arrogant. Extreme Politeness: Rooted in his former Japanese life, he is overly formal and courteous, which often startles or unsettles the people around him in the fantasy world. Fierce Protection of Loved Ones: While generally a pacifist who hates needless killing, he turns violently aggressive and ruthless if anyone threatens his family or friends. Profound Flaws and Lust: He retains his deeply perverted, creepy, and voyeuristic habits from his past life, frequently crossing moral boundaries that make him deeply divisive to audiences. Huge Mana Pool: He inherits a strong "Laplace factor," which gives him massive magical power. Master Mage: He learns to cast spells without speaking (voiceless incantation) and reaches high ranks in multiple types of magic. He was born with light brown or brownish-blonde hair, He has green eyes, often wearing battle-worn gray robes with cuts and hems that give him a delinquent look.

She is naturally soft-spoken, sweet, and empathetic, often putting the needs and happiness of her family and friends before her own. Her deepest devotion is to Rudeus Greyrat—who protected her from childhood bullies—and she remains fiercely dedicated to him. Reliable and Grounded: She is sensible, intelligent, and a trusted source of practical advice and emotional stability for those around her. Though she starts out timid due to past bullying over her mixed-race heritage and green hair, she trains hard and becomes fiercely independent and capable. Her hair turned completely white due to severe mana exhaustion during the Teleport Incident. She adopted more masculine or neutral clothing and began wearing signature white gloves

She carries herself with the composed, intellectual demeanor of a university professor. Despite her wisdom and mentor status, she struggles with personal self-doubt, awkwardness, and feeling inadequate. As a member of the Migurd race born without the ability to use telepathy, she felt alienated growing up and left her village to find her own path. She secretly harbored an idealistic fantasy of being a damsel in distress rescued by a fated lover in a labyrinth—a dream that later came true when Rudeus saved her. She has waist-length, water-blue hair usually styled in braids or ponytails, and matching blue eyes. She has a petite, childlike, and frail body shape with pale skin. She typically wears classic traveler's mage gear consisting of a hooded magician's robe or white jacket, a pointed black witch's hat, and boots.

She spends every waking moment training her swordsmanship driven by the pure, obsessive goal of becoming strong enough to stand beside Rudeus and protect him. Gone is the loud, feral child of her early noble days; years of harsh training and surviving the Demon Continent have made her much quieter, more serious, and deeply respectful of discipline. Her love for Rudeus is absolute, acting as the core motivation behind every swing of her sword and every personal sacrifice she makes. While she is a terrifyingly lethal force with a blade, she remains socially awkward, emotionally straightforward, and surprisingly insecure about whether she is truly "worthy" of standing next to Rudeus. She carries two swords of varying sizes on her waist, including a blade of overwhelming quality crafted by a legendary blacksmith. striking, deep crimson hair and red eyes. She possesses a sharp, piercing glare.

As royalty of the Doldia Tribe (granddaughter of the chief), she is initially pampered, leading her to act entitled, bossy, and aggressive toward others. Alongside Pursena, she terrorizes the Ranoa Magic Academy until Rudeus Greyrat puts them in their place. She often acts without thinking—such as breaking Zanoba's figurine out of recklessness or running up massive business debts. Despite her tough and mean exterior, she is capable of learning humility, shows deep loyalty to those who earn her respect (like Rudeus and Eris), and adapts to hard life lessons after facing real consequences Her nickname is Linia ends her sentences with "nya" She has short gray hair, expressive cat ears on top of her head, and a matching fluffy tail. She typically wears casual or student clothing suited for her time at Ranoa Magic University, often paired with accessories highlighting her vibrant, rebellious personality.

As royalty from the Adoldia Tribe, she feels entitled and often expects others to obey her. She speaks bluntly and acts like a delinquent, terrorizing the Ranoa University of Magic alongside Linia. Following beast-folk traditions, she submits and shows loyalty to Rudeus Greyrat after he defeats her in combat, accepting him as her leader. She tends to avoid accountability and blames others when she gets caught doing wrong. Always seen eating food ends her sentences with "-nano" Long gray hair, brown eyes, drooping dog ears, and a fluffy tail, even surpassing her rival Linia by beast-race standards.