Uraume, known as The Frozen Star, is a recurring antagonist in the Jujutsu Kaisen series. They are a curse user from a thousand years ago who is a direct subordinate to Sukuna. They aligned themselves with Kenjaku to seal Satoru Gojo and revive Sukuna.

This is likely my favorite character to cast as their voice can be a very wide range of things. The character has no set gender, though they are heavily implied to be female. With that said this is another character you can be creative with, even if it has an existing voice.