|Hair||Short, light brown|
|• Professional information•|
|Affiliation|| Honnōji Academy|
|Occupation|| High school student|
Nudist Beach operative
|Uniform||Nudist Beach guerrilla uniform (temporarily, formerly)|
|• Personal information•|
|Family|| Barazō Mankanshoku(dad)|
Sukuyo Mankanshoku (mom)
Mako Mankanshoku (sister)
Guts (pet dog)
|Allies|| Ryūko Matoi|
|Enemies|| Ragyō Kiryūin|
|• First appearance•|
|• Voice actors•|
Matarō Mankanshoku (満艦飾 又郎 Mankanshoku Matarō ) is the brother of Mako Mankanshoku.
Matarō is a short boy with brown eyes and brown hair tied into a ponytail. Generally, he is seen wearing a black shirt that slopes off of one shoulder, a pair of cut-off shorts, and a pair of white sunglasses.
Mako's delinquent little brother who often steals things to get by, much to his sister's and mother's chagrin. He acts as the leader of the local troublemakers that dwell around in the slums of Honnō City. He also makes perverted comments about Ryūko Matoi and later about Nonon Jakuzure after The Great Culture and Sport Festival.
Matarō tried to steal Ryūko Matoi's wallet when she first arrived in the city and then tried to mug her with some juvenile friends after failing his first attempt to rob her. After Matarō witnessed Ryūko effortlessly beat his friends, he quickly apologized to her and pleaded for her forgiveness. Matarō had enough courage to try to save his sister when she was held hostage by the Boxing Club captain, Takaharu Fukuroda. However, Ryūko stopped him and saved his sister in his place.
In episode 19, he is shown to have survived in Honnō City with Guts during the COVERS' attack after the 1-month time skip. He stated that he was looking for the suit that ate his sister. When his luck apparently ran out and was cornered by COVERS, he was saved by Nonon Jakuzure and brought to Nudist Beach's base to rejoin his family.
|Allies||Ryūko Matoi • Senketsu • Mako Mankanshoku • Mankanshoku Family (Barazō Mankanshoku • Sukuyo Mankanshoku • Matarō Mankanshoku • Guts)|
|Nudist Beach||Sōichirō Kiryūin • Aikurō Mikisugi • Tsumugu Kinagase • Kinue Kinagase|
|Student Council||Satsuki Kiryūin • Junketsu • Ira Gamagōri • Uzu Sanageyama • Nonon Jakuzure • Hōka Inumuta • Shirō Iori|
|Club Presidents||Takaharu Fukuroda • Omiko Hakodate • Maiko Ōgure • Aizenbō Fuguhara • Maimu Okurahama • Masuyo Watari • Jack Naitō • Tatamu Otte • Kagesaburō Kagerō • Kusanosuke Yaguruma • Kusatao Uwabami • Tōki Brothers • Ryōsuke Todoroki|
|Revocs Corp.||Ragyō Kiryūin • Nui Harime • Rei Hōōmaru|