Shin Uchiha (Clones)

The is a mysterious young shinobi garbed in the attire of the Uchiha clan. His identity and origins are currently unknown, though Kakashi Hatake suggests that he may be a survivor of the Uchiha clan or, more likely, one of Orochimaru's experiments.

Appearance
This boy is an eerie-looking young man. He has an indistinct hairline, and his light-coloured hair is slicked back and tapered to a point. He lacks eyebrows and wears a perpetually wide-eyed expression, displaying a pair of active Sharingan. When confronting Sasuke Uchiha he donned a dark hooded robe which was quickly disintegrated by Sasuke's counter-attack. Beneath the robe he wears a light high-collared kimono with an Uchiha emblem emblazoned on the back and a wide obi wrapped around his waist. He wears dark arm-guards that cover his forearms, dark pants, and a pair of dark open-toed boots with distinct zig-zag treads.

Personality
This boy is quiet and enigmatic. When he does speak he does so in a stilted, monosyllabic manner. Outwardly emotionless, he nevertheless expresses a desire to avenge Itachi by killing Sasuke, declaring that Itachi's murder was unforgivable.

Ninjutsu
After being driven back by Sasuke, the boy was performs a basic Leaf-Style Body Flicker Technique to escape.

Bukijutsu
This boy initiates his ambush by attacking Sasuke with a kusarigama, slashing with the sickle while ensnaring Sasuke's sword with the weapon's weighted chain.

Sharingan
This boy wields a pair of three-tomoe Sharingan. With it, he is able to coordinate his attack patterns, forcing the highly skilled Sasuke to draw his sword. His control of this dōjutsu or levels of chakra appear to be very high as he is seemingly able to keep the Sharingan activated continuously.

Naruto Gaiden: The Seventh Hokage and the Scarlet Spring
This boy attacks Sasuke after stalking him through the woods, but is quickly driven back and forced to flee. He retreats to a mysterious clearing where he reports to a hooded man wearing what appears to be an Akatsuki robe. The two briefly discuss Sasuke, agreeing that he is strong but must be killed.