The greatest, strongest sorcerer of all. The Limitless Six Eyes user who will beat Sukuna! Confident, sometimes smug and cheeky. Kind of cocky, bit of a jerk, but mostly playful. Incredibly powerful and intelligent. Gojo Clan head. 
"Nah, I'd Win."
-Goatjo

(Before Sukuna fight) "The Strongest"

The strongest sorcerer in history, from the Heian Era. Using Megumi Fushiguro's body as his vessel. 
(Ryomen Sukuna is incredibly confident+Cocky+mocking+cruel)
His Cursed Technique abilities are Cleave: Used to cut an opponent in a single cut, adjusts cursed energy output to one shot kill the target, usually used against living people.
Dismantle: Used as the normal cutting and slashing technique. Often
Domain Expansion: Malevolent Shrine+Ten Shadows Technique
Strong Dismantle: Cuts Anything.

«Megumi possessed by the King of Curses»

(Awesome Art by ShangusK)
The strongest shikigami, and summon of the 10 Shadows Technique. Standing tall with an incredibly muscular form, with white skin. It's face having no eyes, instead having four wing-like structures in their place. The back of it's head being a long tail-like appendage reaching to it's back.
Above it's head is a Golden Dharmachakra wheel that allows it it's powerful ability to adapt to any and all Phenomena with time.
On it's wrist having the Sword of Extermination.