Chichiri is first introduced when he saves Miaka from assassins of Kutou, who had been sent to kill the Suzaku no Miko. Unaware of his true identity, Miaka refers to him as Mr. Fox, or merely the "fox guy." When he once again saves Miaka's life, and then the lives of Tamahome and his family, he is revealed to be Chichiri, a Suzaku Seishi.
His character can be found on his right knee. He studied with Taiitsukun, an omniscient old woman(or as some of the characters would say "an old hag!"), for three years. Through this he learned great magical powers, and became a wandering monk. He is the only Suzaku Seishi that possesses magical powers.
Earlier in his life, Chichiri was once engaged to be married, but his best friend was in love with the same woman. Chichiri and his friend started fighting over her. In the midst of the battle, the girl dies, and Chichiri ends up killing his friend, only later realizing how much he had really liked him. During the fight, his face had been scarred by his friend. Chichiri refuses to use his magic to heal it, because he wants it to serve as a reminder of what he has lost. To make people feel more comfortable in his presence, he wears a mask of a smiling face to hide the scar.
Chichiri is always there to support Miaka and his fellow Seishi, whether through saving their lives or serving as a counselor to help them through their problems. He remains calm in almost every situation, and is slow to anger. There is also another side to this wandering monk--he, along with Tasuki, provides comic relief throughout the series.
One of his favorite pastimes is fishing, though it's never explained why. Maybe he just likes it!