Throughout the Naruto series, Sasuke Uchiha has undergone several evolutions, along with receiving multiple power-ups. The most intriguing of Sasuke's evolutions was his Curse Mark, a significant power amp that was given to him by Orochimaru during the Chunin exams. Despite being a curse of sorts, the Curse Mark became a great source of power for Sasuke, allowing him to rival Naruto's strength with the Nine-Tails.