- Main article: Sasuke Uchiha (KH:RTD)/Abilities
Sasuke excells at all that he does and finds little difficulty in more challenging tasks. His prowess with Uchiha Fire Release and weapon-based techniques surprised Xirbealg and Nathan in their first fight. Madara Uchiha and Itachi have stated that Sasuke possesses the unique potential to become much stronger than Itachi.
It can also be assumed that Sasuke has a fairly high amount of energy.
Sasuke and his older brother Itachi were found by Madara Uchiha living on the streets of Traverse Town and Madara saw potential in both of them and decided to recruit them to his organization of mercenaries called Akatsuki.
As he grew older he developed a Sharingan eye like that of Madara and Itachi. He trained with his brother and learned to manipulate and create lightning and flames. When Madara felt he was ready he sent him to Agrabah on a mission to destroy Xirbealg the leader of Organization XXI. When he arrived at Agrabah he saw 2 men in black cloaks walking in the distance. He approached them and Nathan and Xirbealg asked who he was. Sasuke didn't respond but instead charged full speed at Xirbealg with a lightning element attack that was easily blocked. Nathan decided to test out his dark abilities and used a small portion of his power to send them to the dark realm where he asked Xirbealg to stay out of the fight. Sasuke and Nathan both fought evenly but when Sasuke summoned a dark keyblade Xirbealg got in his way instantly and told Nathan to go back to Twilight Town as he gave him a potion. Xirbealg and Sasuke both fought at full power and used lightning element techniques. Xirbealg absorbs one of Sasuke's sharingan and defeats him, convincing him to join the Organizatiion.
Sasuke trained for hours with Xirbealg in the Twilight Town mansion's computer room until Xirbealg developed a Mangekyo Sharingan and Sasuke developed Twilight energy. The Organization is attacked by Akatsuki and Sasuke fights Itachi until they both summon Dark Keyblades and Sasuke stabs his brother through the heart believing that its the only way to end the Uchiha Clan's chain of hatred and Itachi dies. Sasuke then activates his Mangekyo Sharingan for the first time.
After the rebirth of Gabriel and Ana, Sasuke runs to hug them and introduces them to the Naruto and Sakura. Gabriel then smiles and says "Welcome, to the team."
A new enemy?
Eternal Mangekyo Sharingan???
After the encounter with The Ansem Host Sasuke and Gabriel went out to find Itachi's grave in order to take his eyes and grant both of them the Eternal Mangekyo Sharingan believing it was the only way to defeat Madara. When the two of them reached their destination Sasuke dug until he found his brother's body and they took the eyes back to The Old Mansion. once there Nathan replaced Gabriel's left eye with Itachi's and Sasuke's right eye with that of his brother.