Gaara

Gaara is a shinobi of the Village Hidden in the Sand. Before he was born, he was transformed into Jinchuuriki the One-Tailed, Shukaku. Although outwardly he maintained a firm calm, Gaara remained deeply unstable, being completely unperturbed by others' pleas for mercy, but suppressed his bloodlust in certain situations. This behavior is partly explained by the presence of Shukaku, whose voice only Gaara was able to hear in his head, encouraging violence at every opportunity and tormenting Gaara with threats to take control of his body if he fell asleep, thereby causing Gaara insomnia. However, Shukaku did not bear full responsibility for Gaara's actions, as he simply hated other people for potentially threatening his own life. His goal is to kill anyone who is strong, since only by killing strong opponents can he give meaning to his existence. With those who did not interest him, Gaara behaves withdrawn and silent.