knight504 said:
Anyway, probably got the last batch here since I can't imagine I'll think of anymore.
I lied.
Uchiha Orochimaru – Thanks to how quickly the Sound Four accomplished their mission to retrieve Sasuke, Orochimaru was able to steal his body for himself and finally grant him the Sharingan. With his ideal body, he made all the modifications to turn himself into a monster; an impenetrable skeletal frame with bone manipulation, chakra absorption, molecular breakdown, nature energy absorption and the Mokuton. And that is just a precursor for his search for a method to unseal his arms and his desire to master senjutsu, staying out of Konoha’s radar to gather his strength and that of Otogakure.
Post Time-Skip Sound Five – Their successful mission of retrieving (read: kidnapping) Sasuke ensured there were no casualties among their group and they returned to Orochimaru’s side to continue their bodyguard duties. Kimimaro survived thanks to Karin’s life-force and a breakthrough from Kabuto and so her and the other four broadened and improved their skill-set. Already considered Orochimaru’s best shinobi, their skills grew over the next few years to form an elite fighting unit. They even trained the curse seal experiments into a dangerous force, turning Otogakure into a power on par with any of the Great Hidden Villages.
Kumogakure Sasuke – In the aftermath of the Uchiha Incident when Konoha was several weakened by the loss, Sasuke was stolen away from the hospital by a Kumo-nin. Taken to Kumogakure, they took advantage of his mental instability and Sasuke was brainwashed into becoming one of their loyal shinobi. His talents were perfect for Kumo’s preferred fighting style, kenjutsu and nintaijutsu, and his bloodline was greatly sought after.
Snake Sage Sasuke – After defected to Oto, Sasuke knew he would need to kill Orochimaru. He decided to communicate with the snake summons to see how loyal they are to Orochimaru. This eventually lead to him being summoned to their domain and granted an audience with White Snake Sage. In exchange for their service, he would save them from Orochimaru’s tyranny. And thanks to the curse seal he’d been branded with, Sasuke was one of the few eligible candidates for learning senjutsu and the next few years involved slow and steady training for him to become a Snake Sage.
Rogue Ninja Tsunade – Instead of gaining a fear of blood from Dan’s death, Tsunade instead gained an obsession with cheating death. She conducted her own experiments to create new kinds of medical ninjutsu and medicines for the sake of creating a world without death. During her last years in Konoha, she even worked alongside Orochimaru in his experiments for discovering everything about jutsu and immortality, performing all manner of immoral acts for her goal until they were discovered and forced to defect. Even then, she continued her work whilst traveling. Up until she met a masked man who offered her the world she was searching for.