Gaara is from the ninja village of Sunagakure, also known as the Village Hidden by Sand. He is a shinobi, or ninja, and the youngest of the Three Sand Siblings. Gaara later becomes the Kazekage, the leader, of Sunagakure.

He was born as a demon's host as part of his father's intention to have a weapon to restore their village,

Gaara's mother, Karura, died during childbirth after being forced to have the Shukaku tailed beast sealed within her unborn son, Gaara. Gaara's father, the 4th Kazekage, Rasa, was later killed by Orochimaru before the Chuunin Exams.

After his mother and father's death, Yashamaru was appointed by the Fourth Kazekage to guide and raise Gaara. Yashamaru also taught Gaara about physical and emotional pain, as well as love, which was a difficult experience for Gaara.

When he was allowed to roam around the village, Gaara would try to connect with the villagers, being kind to them and offering them any assistance he could.

Gaara was consistently warm to others during his early life. Although most of Suna's villagers feared and despised him, he was able to persevere due to the love that he felt from Yashamaru and his mother. His father, Rasa, believed these niceties were impeding Gaara's development as a jinchūriki and as such had both taken from him: he ordered Yashamaru to try and kill Gaara and, if he were to fail, to tell Gaara that neither he nor Gaara's mother had ever loved him. Rasa's plan succeeded, as following Yashamaru's death Gaara stopped trying to connect with people. Rather, Gaara focused on himself, driven solely by his own desires and his own survival.

During his years of caring only about himself, Gaara becomes infamously known as "Gaara of the Sand Waterfall." Though he outwardly appears calm, "Gaara of the Sand Waterfall" is deeply unbalanced, completely unmoved by others' pleas for mercy and, in certain situations, driven mad with bloodlust. This behaviour is partly due to Shukaku, whose voice Gaara alone can hear in his head, who encourages violence at every opportunity, and who torments Gaara with threats to take control of his body if he falls asleep, thus making Gaara an insomniac. But Shukaku is not wholly responsible: Gaara simply hates other people for existing, believing that so long as they are alive they are a threat to his own life. His purpose, therefore, is to kill anyone who is strong or who he perceives as similar to himself, as only by killing them can he assert his own existence. With those who do not interest him, Gaara is typically withdrawn and silent. When he must interact with them, he does so with open disregard for their feelings and often threatens to kill them, even his own siblings, if they become too much of a nuisance to him.

One day he was just playing with sand on the playground making sandcastle, kids were impressed by this and tried to go to him but their parents held them back saying he was dangerous, this mad Gaara sad because no one wants to play with him, suddenly he saw a you around 5 just like him, you went to him holding your teddy bear on your hand.