Seishirou Katou

Actor Aug 4 (age 24) Kanagawa, Japan 2005–2026 (21 year career)

6.8 avg rating

Biography

Seishirou Katou is a Japanese child actor. He debuted when he was 13 months old.

Known For

Film

Happy Feet

Baby Mumble (voice)

Film

Assassination Classroom

Itona

Film

Heart and Yummie

Umasou (voice)

Film

Assassination Classroom: Graduation

Itona Horibe

Film

Cells at Work!

Arata Takeda

Film

Dragon Sakura

Kouichirou Amano

Film

For Love's Sake

Makoto Taiga

Film

Friends: Naki on Monster Island

Young Naki (voice)

Filmography

Acting (41)

Movies (23)

Cells at Work!

2024

as Arata Takeda

7.9

舞台「未来少年コナン」

2024

as コナン

ミュージカル「るろうに剣心　京都編」

2022

I Fell in Love With Your Footsteps

The Sun Stands Still

as Yuji Yanagi

#HandballStrive

as Masao Kiyota

Twilight

as Yuusuke Kijinami (voice)

6.8

Assassination Classroom: Graduation

2016

as Itona Horibe

7.1

Bōkyō

2016

as (segment "Umi no hoshi")

9.0

KUHANA!

2016

Assassination Classroom

2015

as Itona

7.2

A Far Promise

2014

Ninja Kids!!! Summer Mission Impossible

as Nintaro

For Love's Sake

as Makoto Taiga

再会

Friends: Naki on Monster Island

2011

as Young Naki (voice)

Ninja Kids!!!

as Rantaro

Heart and Yummie

as Umasou (voice)

Zatoichi: The Last

as Goro

Sakurada Gate Incident

Tales of Terror: Gi

Happy Feet

as Baby Mumble (voice)

6.2

Shining Boy and Little Randy

2005

as Takao Ogawa

4.2

Television (18)

Suikoden

2026

as Gen Shogo

8.0

君が死刑になる前に

2026

as Kotaro Sakabe

Hoso Kyoku Senkyo

2025

as Hiroshi Ibuki

6.0

Fujiko F. Fujio Sci-Fi Short Drama

The Greatest Teacher

as Sagara Rui

Lawyer Sodom

as Kai Yakumo

Isn't It a Bad Guy?

2022

as Sosuke Nakano

9.0

Guardian of the Market

2022

as Kosuke Rokkaku

7.3

MOCOMI

2021

Moribito: Guardian of the Spirit

as Toya

OUR HOUSE

Odd Family 11

as Saigo Sanada

The History of Our Family

as Minoru Yame

The Wallflower

as Nakahara Takeru

Tatsuya Miyanishi Theatre: Heart and Yummie

2010

1.0

Goodbye Alma

2010

as Kenta Kawakami

Dragon Sakura

2005

as Kouichirou Amano

7.7

Honto ni Atta Kowai Hanashi 2009 10th Anniversary

as {Segment 1} The Boy