Nemui

is a genin of Kumogakure.

Background
During the Chūnin Exams, Nemui was pitted against Itachi Uchiha, only to be defeated by the latter. As his defeat, he cried in fear of the Uchiha.

Personality
True to his personality and nickname, he is presumed a lazy shinobi, or just a sleepy-head.

Triva

 * means "sleepy" or "drowsy", alluding to his fighting style and nickname.