gaara. his sand killed his mom when he was born, whole life called monster and only one person said she loves him, father sent people to kill him, the only person who said she loved him attacked him and got killed by gaara's sand. he pretty much has nothing to live for with no goal except for killing everything he sees and being his countries tool. while sasuke still living in other to kill his brother and naruto was just called a monster so he wants to be hokage