Manipulators who aren't masterminds

Yoru from chainsawman. Her pychological manipulations are very child like and straight foward only working because her victim is very naive like Asa or in case of denji Because he knows he's being manipulated by her but he has nothing else so he plays along. Also fami and Yoshida do The heavy lifting for her like The aquarium where they made Asa and Denji form a connection.

Jimmy from Mouthwashing.

He is extremly chaotic almost never planning ahead, he Only manages to manipulate curly bacuse of their friendship (and curly being a push over).