This is my entry for Hikari Mogami's contest. Here's his info.

Name: Ryou (I couldn't think of a last name)

Age: 16

Eye color: Grey (his right eye is red though)

Hair color: Black

Village: Sand (Temporarily), none currently

Personality traits: Cold, quiet, unemotional, a loner

Love: none

Fighting style: Efficient: he doesn't waste time or energy in defeating an opponent. Moderate taijutsu skills and deadly with a blade. No ninjutsu or genjutsu, he relies heavily on his demonic wind powers (I'll explain later). He has no endurance and a lower than average amount of chakra, so long, drawn-out fights are lethal to him.

Background: He lived in a small village in the Land of Wind. For some reason, when he was born, a demonic wind spirit possessed him. A local priest tried exorcising him, but the spirit was only mostly removed, leaving a piece of the spirit in him. This caused his right eye to turn red and made red markings appear on the right side of his body. This also gave him the ability to control the air around him. When he was 6, the village was attacked by bandits. They killed everybody, but before he was killed, what was left of the spirit took control of him and killed all the bandits. He was later brought to the Village hidden in the Sand to train as a ninja, which didn't go well due to his physical frailness, relatively low amount of chakra, and lack of killer instincts. At the age of 10 he was sent on a mission, which went badly. they were ambushed, and the spirit took over him again. He killed everybody, including his team. Deciding he need to learn to control the spirit, we went into the desert to train for 5 years. When he did return, he decided to start over, so he went to the Land of Water and was hired as security by a powerful business man. He worked there for a year, but when his employer was killed, he vanished. He was last seen in the Land of Fire heading for the Hidden Leaf village.