Rikkaidai Fuzoku Chuu 3rd Year
Class: 3-B #14
Elementary: Unknown (Somewhere from the South)
Birthday: 4th December [Born at 16:29]
Height: 175cm
Weight: 62kg
Blood Type: AB
Dominant Hand: Left
Play Style: All rounder
Shoes: YONEX POWER CUSHION21 WIDE 271 (SHT-271W)
Racket: Prince MORE POWER 1150 S
Special Move: Trick Play
Family: Father, Mother, Older Sister, Younger Brother
Father's occupation: Office worker (Construction)
Favourite Subject: Mathematics
Worse subject: Music
Preferred type: Intelligent people
Spends allowance on: secret
Position in club: None
Committee: None
Most visited spot in school: Rooftop
Favorite color: Blue
Favorite food: Yakiniku (fried meat)
Favorite movie: "8 1/2"
Favorite book: Paradies der falschen Vögel (The Trickster's Paradise)
Favorite music: Jazz
Favorite Date spot: Sea
Most wanted item now: Screw and driver (usage unknown)
Daily routine: Preparation and review for class
Dislikes/bad at: Heat
Special skill aside tennis: Archery, gun-shooting games

Niou is known as the Trickster of Rikkai dai, thus making him a very difficult opponent. Aside from being a skillful doubles player (alongside Yagyuu), Niou is also a strong singles player. He is the only player in Rikkai dai who has enough guts to go against Sanada's strict orders.He is able to completely copy the techniques and play style of other players, creating the illusion his opponent is facing another person. It isn't completely perfect, as there are moves that he cannot copy and he is limited by his own physical abilities. He often copies his doubles partner, Yagyuu, to confuse their opponents. He can predict the moves of his opponents up to ten steps ahead.