Toji Fushiguro (伏 (ふし) 黒 (ぐろ) 甚 (とう) 爾 (じ)  Fushiguro Tōji?), born Toji Zenin (禪 (ぜん) 院 (いん) 甚 (とう) 爾 (じ)  Zen'in Tōji?) is a recurring character in the Jujutsu Kaisen series. He was a former member of the Zenin family and the infamous assassin known as the Sorcerer Killer (術 (じゅつ) 師 (し) 殺 (ごろ) し Jutsushi Goroshi?), contracted by the Time Vessel Association among other groups throughout his time as a non-curse user. He was also the father of Megumi Fushiguro and former enemy of Satoru Gojo. While working for the Star Religious Group, Toji serves as the primary antagonist of the Gojo's Past Arc.

Toji is a cool-headed, 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[2] 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.[3] 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.