Keiichi Hasegawa

Writing • 61 Credits

✍️ Written & Story Credits (48)

Screenplay, Novel & Story

Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack

2001 ⭐ 3.7

Screenplay

Kamen Rider W Returns: Kamen Rider Accel

2011 ⭐ 3.3

Writer

Rage of Bahamut

2014 ⭐ 3.8

Writer

Kamen Rider

1971 ⭐ 3.2

Writer

SSSS.GRIDMAN

2018 ⭐ 3.6

Writer

SSSS.DYNAZENON

2021 ⭐ 3.7

Writer

009-1: The End of the Beginning

2013 ⭐ 3.0

Writer

The Big O

1999 ⭐ 3.6

Writer

Ultraman Tiga: The Final Odyssey

2000 ⭐ 3.4

Screenplay

Ultraman: The Next

2004 ⭐ 3.3

Screenplay

Gridman Universe

2023 ⭐ 4.0

Screenplay

Ultraman Tiga & Ultraman Dyna: Warriors of the Star of Light

1998 ⭐ 3.3

Screenplay

Astro Boy

2003 ⭐ 4.0

Writer

Superior Ultra 8 Brothers

2008 ⭐ 3.8

Writer

Ultraman Saga

2012 ⭐ 3.5

Writer

Ultraman Nexus

2004 ⭐ 4.1

Screenplay

Ultraman Dyna

1997 ⭐ 4.1

Writer

Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: The Battle in Hyperspace

1999 ⭐ 3.6

Writer

Ultraman Gaia

1998 ⭐ 4.2

Writer

Ultraman Mebius

2006 ⭐ 4.1

Writer

Ultraman Mebius & Ultra Brothers

2006 ⭐ 3.8

Writer

Ultraman Cosmos vs. Ultraman Justice: The Final Battle

2003 ⭐ 3.2

Screenplay

Ultraman Ginga

2013 ⭐ 4.1

Writer

Ultraman Cosmos 2: The Blue Planet

2002 ⭐ 3.4

Screenplay

SSSS.DYNAZENON Grand Episode

2023 ⭐ 2.5

Screenplay

Ultraman Cosmos

2001 ⭐ 4.1

Writer

SSSS.GRIDMAN Grand Episode

2023 ⭐ 1.8

Writer

No. 1 Sentai Gozyuger

2025 ⭐ 3.4

Writer

Cackling Kitarou

2007 ⭐ 4.3

Writer

Kamen Rider Drive Saga: Kamen Rider Mach / Kamen Rider Heart

2016 ⭐ 3.9

Writer

Cutie Honey: The Live

2007 ⭐ 2.6

Writer

Kamen Rider Drive

2014 ⭐ 4.4

Writer

Phoenix

2004 ⭐ 3.3

Writer

Kamen Rider Gotchard: The Future Daybreak

2024 ⭐ 3.9

Writer

Kamen Rider Drive: Type: Televi-Kun - Hunter & Monster! Chase the Mystery of the Super Thief!

2014 ⭐ 3.6

Writer

Ultraman Cosmos 2: The Blue Planet - Young Musashi Chapter

2002 ⭐ 3.1

Writer

Kamen Rider Gotchard

2023 ⭐ 3.5

Writer

Kamen Rider Ghost

2015 ⭐ 4.4

Writer

Kamen Rider Gotchard Ver.: Romeo and Juliet Complete Edition

2024 ⭐ 3.5

Writer

ウルトラマンダイナ SPECIAL

2000 ⭐ 3.5

Writer

Kamen Rider Drive: Type ZERO! Episode 0 - Countdown to Global Freeze

2014 ⭐ 4.3

Writer

Kamen Rider Ghost: Truth! The Secret of the Heroic Eyecons!

2016 ⭐ 3.5

Writer

Abyssalis Revelation: Lachesis

2025 ⭐ 4.0

Writer

My future of being executed

2012

Writer

Takamine - The Man By Which Cherry Blossoms Bloomed in America

2011

Writer

Kamen Rider Fourze the Net Edition: It's Class Time, Everyone!

2012

Writer

No. 1 Sentai Gozyuger: Polar Beginning

2026

Writer

ネット版 仮面ライダーフォーゼ みんなで授業キターッ!

2012

Writer

🎭 Acting Roles (2)

Ranked by Prestige & Popularity

Kamen Rider W Returns: Kamen Rider Accel

2011 ⭐ 3.3

as Drunken Man

Kamen Rider

1971 ⭐ 3.2

as Humagear