Toji Zen'in

Toji is a tall, muscular man with mid-length straight black hair that reaches to his ears. His eyes are green, just like his son's, and he has thin black eyebrows and a scar on the corner of his right lip.

For casual attire, Toji wears a simple outfit consisting of a long-sleeved black shirt and matching pants with sandals. While fighting, Toji wears a tight-fitting black shirt, sports tan baggy training pants with a black belt weaved through the waist and black martial arts slippers. While still a member of the Zen'in clan, Toji had longer hair and he wore a dark colored haori over a black yukata.

After being reanimated by Granny Ogami, Toji inhabits the body of her grandson where he wears a loose white sweater along with black pants and black shoes. After killing Granny Ogami while her Séance technique remains active, Toji's scleras becomes completely pitch black to symbolize how he's lost most of his sense of self.

Toji is a cool-headed and confident man who makes a living using his skills and does not sweat the small stuff. He appears to enjoy insightful conversation with others as long as it somehow pertains to himself and can trade witty banter with the highly sarcastic likes of Satoru Gojo. Upon meeting, Satoru asked Toji if they had met before. Toji, on the other hand, reassured him that he was not the type to recall a random man either. In battle, Toji has a crazed expression as if he's lost in the thrill of the fight, but he's always maintaining a cool and calculated head and plotting his next move.

Toji is an assassin who's garnered the name "Sorcerer Killer" and spends his time gambling between assignments from shady clients. Toji even planned on selling Megumi to the Zen'in clan he had left behind, believing that this would warrant a better future for his son due the cursed technique he would eventually inherit.

Toji doesn't question his client's motives as long as the money is right and generally doesn't do any extra work for free. He's bold and dangerously calculated in his strategies, using his jujutsu knowledge to outwit even the most prophesized sorcerers. This garnered him a reputation large enough to attract the attention of the wealthy Time Vessel Association for such an important job that could ensure their future. While he thought the religious members of the organization were crazy, he got along well enough with their middleman to invite him to eat.

As a non-sorcerer raised in the Zen'in clan who values cursed techniques above all, Toji is a man who has suffered due to the interests of the sorcerer clans; he was severely abused to the point his father even threw him into a swarm of cursed spirits as a child. His evil actions result from his dejection towards the jujutsu world as he attempts to spite it. Born without cursed energy, Toji eventually left the Zen'in clan and married a woman, taking her name "Fushiguro". Her kindness helped Toji change his ways. He stopped gambling and hunting sorcerers and it's likely her influence stopped Toji from taking revenge on the Zen'in clan. However, after her death, Toji reverted back to his old, cold, self. He sold their son to the Zen'in clan because he believed in young Megumi's potential to be a real sorcerer, naming him "Megumi" because it means blessings.

Toji completed his final mission for the Time Vessel Association and should have cut and run when faced with a rejuvenated Satoru Gojo. However, due to his disdain for the jujutsu world and the sorcerer families, Toji chose to try and cut down the most gifted sorcerer in the world as another way to spite them all. Unfortunately, this pride cost Toji his life. Unable to look past his demons, he deviated from his natural instincts and ignored the uneasiness plaguing him during the fight.

Keeping up with his stoic persona, Toji chose not to utter any final words at first. In his last moments, he thought back to his ex-wife and their son, and decided to tell young Gojo that Megumi would be sold into the Zen'in clan in a few years, urging him to do whatever he wanted with this information. This would eventually lead to Satoru stripping Megumi away from the Zen'in clan's hands and becoming a close mentor for Megumi in the future as well as granting Megumi a chance to work as a jujutsu sorcerer.

While Toji is technically a non-curse user with no innate talent for jujutsu, he was one of the most elite fighters in the jujutsu world when he was alive. With innate physical prowess far superior to all others in his path, Toji contended with the most dangerous and highly ranked jujutsu practitioners this era had to offer. He was able to defeat the strongest jujutsu sorcerers at the time without sustaining any injuries beyond a small cut around the ear, one of which was a young Satoru Gojo, a prodigy who possessed the Six Eyes and Limitless cursed technique. The other was the curse manipulator Suguru Geto, a powerful grade 1 sorcerer that would reach special grade a year later. Toji was able to effortlessly take down Suguru along with several of his strongest cursed spirits. Toji referred to Suguru's abilities as rabble compared to his own strength.