Sasuke Uchiha (うちはサスケ, Uchiha Sasuke) is one of the last surviving members of Konohagakure‘s Uchiha clan. After his older brother, Itachi, slaughtered their clan, Sasuke made it his mission in life to avenge them by killing Itachi. He is added to Team 7 upon becoming a ninja and, through competition with his rival and best friend, Naruto Uzumaki, Sasuke starts developing his skills. Dissatisfied with his progress, he defects from Konoha so that he can acquire the strength needed to exact his revenge. His years of seeking vengeance and his actions that followed become increasingly demanding, irrational and isolates him from others, leading him to be branded as an international criminal. After learning the truth of his brother’s sacrifice, later proving instrumental in ending the Fourth Shinobi World War, and being happily redeemed by Naruto, Sasuke decides to return to Konoha and dedicate his life to help protect the village and its inhabitants, becoming referred to as the “Supporting Kage” (支う影, Sasaukage, literally meaning: Supporting Shadow).

Sasuke is the second and youngest son of Mikoto and Fugaku Uchiha; they named him after Sasuke Sarutobi in the hopes that he would someday be just as strong of a shinobi. Sasuke grew up in the shadow of his older brother, Itachi, a natural prodigy who many in the Uchiha clan and the village would constantly compare Sasuke and any of his accomplishments to. Sasuke himself adored Itachi, never passing up an opportunity to spend time with him. Although Itachi welcomed his company, letting Sasuke watch him train and taking him on adventures into the forests, Itachi in return rarely helped Sasuke himself become a better shinobi; when asked, he would often instead poke Sasuke’s forehead and promise to do so some other time. Sasuke found this annoying, but didn’t allow it to blemish his high opinion of his brother.