Sukuna views himself as the absolute ruler of the world and treats everyone else with utter contempt, calling humans "maggots".Sadistic and Cruel: He takes joy in causing pain, mocking the weak, and prolonging fights just to watch his opponents struggle.Hedonistic: He lives purely by his own desires—eating what he wants and killing when he pleases, guided entirely by a ruthless "might makes right" mindset.Cunning and Intelligent: Beneath his brutal nature, he is a brilliant and patient strategist who plans moves far in advance to secure his victory.AppearanceVessel Form (Yuji/Megumi): When possessing a host, he shares their basic body shape but gains distinctive dark, curved tattoo-like markings on his forehead, cheeks, chest, and wrists, alongside a second pair of eyes that occasionally open.True Form (Heian Era): His original body is a towering, monstrous human shape with four arms, four eyes, two mouths (one on his face and one on his abdomen), and a rugged, menacing build covered in similar dark lines.

Constantly teases friends and enemies alike, highly confident in his unmatched abilities, and rarely takes anything seriously.Disrespect for Authority: Despises the conservative jujutsu executives, routinely ignoring their rules and actively working to subvert their power.Visionary Teacher: Deeply cares for his students, choosing to foster a strong new generation of allies rather than executing higher-ups by force.Cold Ruthlessness: Shifts instantly from goofy to terrifyingly detached in battle, showing zero mercy to curses or those who threaten his students.

He has a prominent, thick horizontal dark stripe painted across the bridge of his nose.Hair style: His dark hair is tied upwards into two messy, distinct ponytails.Wardrobe: He wears a light-colored, oversized long-sleeve robe over a dark, skin-tight undershirt.Signature Straps: Two thick, dark sashes cross over his torso in a prominent "X" shape.Expression: He constantly carries a heavily fatigued, bored, or entirely dissociated expression.PersonalityFamily-Oriented: His entire identity and moral compass revolve around being the ultimate big brother.Calm and Reserved: Outside of combat or family matters, he is quiet, aloof, and fades into the background.Not Innately Evil: Despite being half Cursed Spirit, he bears no inherent malice or desire to kill humans.Vengeful yet Loyal: He can be driven to absolute, terrifying rage if his brothers are harmed or threatened

He strictly wears a sharp, formal business suit consisting of a tan blazer and matching trousers.Signature Tie: He sports a distinctive yellow, leopard-print tie that matches his belt and serves as a tool for his cursed technique.Unique Eyewear: He wears a pair of sleek, frameless, round spectacles with no arms that clip directly onto the bridge of his nose to hide his eyes.Physique: He is a tall, muscular man with slicked-back blonde hair and a consistently serious, unsmiling expression.PersonalityStrictly Professional: He treats jujutsu sorcery as a standard 9-to-5 job, despises working overtime, and values efficiency above all else.Realistic and Cynical: Having worked as a corporate businessman, he holds a grounded view of the world, often stating that "both corporate life and jujutsu sorcery are inherently terrible."Deeply Compassionate:

He is a tall, muscular man with an athletic, bodybuilder build and a distinctive small scar on the right corner of his lips.Casual Clothing: He typically wears a tight, short-sleeved black compression shirt that highlights his muscles, paired with baggy white martial arts pants and a black belt.Dark Features: He has straight, messy black hair that falls over his ears and piercing green eyes, PersonalityCynical Mercenary: He works entirely for profit, taking on assassination jobs without any moral hesitation or care for the consequences.

His long black hair was tied up into his signature half-up man bun, with his distinct single strand of bangs framing the left side of his face.Regular Earrings: He wore simple, small black stud earrings, as he had not yet stretched his earlobes out with large gauges.Gentle Expressions: He carried a calm, friendly demeanor, often seen with a polite, soft smile rather than the cold, mocking smirks of his later years.Personality (2006)Strong Moral Compass: He was highly principled and strictly believed that jujutsu sorcery existed solely to protect non-sorcerers. He famously lectured Gojo on manners and responsibility, arguing that "might makes right" is a flawed mindset.The Grounded Half of the Duo: While Gojo was reckless and arrogant, Suguru was the mature, responsible, and polite student who kept Gojo in check and smoothed over issues with their superiors.Quietly Stressed: Beneath his calm exterior, he was already carrying immense mental weight. He secretly detested the taste of swallowing cursed spirits (describing it as swallowing a rag used to wipe up vomit), but hid his disgust to fulfill his duties.