Madara Uchiha
Lord Sasuke.
i dont think so, it's actually the other way around, he's too intense, besides he's been doing what he did for revenge and loneliness whihc further proves sasuke has a heart and he´s too intense, when he doesnt care about somebody he simply ignores them but when he cares about somebody he overdoes it
Do you consider heartless to be cold? If so then it's kaguya. Even naruto knew he couldn't tnj her.