Most of the characters who appear in Naruto are ninja, and they are all skilled in their own way, but certain individuals are far stronger than others. Itachi Uchiha was a villain for a large portion of the story, but by the end of the series, he was recognized as one of the ninja world's greatest heroes. Itachi was just 21 years old when he died, but he managed to achieve many things during his short life.
Source:https://www.cbr.com/itachi-best-moments/