Episode 1
Gain and Gainer
30m
Gainer Sanga, a skilled gamer, leads a normal life in the domed city of Yapan until he gets involved in a mysterious altercation, leading to the activation of an Overman.
Where to watch Overman King Gainer
TV series
Overman King Gainer
20021 season8.4 / 10
Overman King Gainer is an anime TV series, created by Sunrise. Directed by longtime animator Yoshiyuki Tomino, the creator of the Gundam series, written by Ichirō Ōkouchi, and featuring character designs by Yoshihiro Nakamura, Kinu Nishimura and Ken'ichi Yoshida, the series ran from September 7, 2002 to March 22, 2003 on Japan's WOWOW network, spanning a total of 26 episodes.
Availability
Not streaming in United States
Checked Sep 3, 2026
Overman King Gainer premiered September 7, 2002. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
Overman King Gainer is an anime TV series, created by Sunrise. Directed by longtime animator Yoshiyuki Tomino, the creator of the Gundam series, written by Ichirō Ōkouchi, and featuring character designs by Yoshihiro Nakamura, Kinu Nishimura and Ken'ichi Yoshida, the series ran from September 7, 2002 to March 22, 2003 on Japan's WOWOW network, spanning a total of 26 episodes.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 14
The Apparition, Dominator
30m
Episode credits
Directed by Akitoshi YokoyamaWritten by Miya Asakawa
Episode 16
A Tough Fight, Adett Squad
30m
Episode credits
Directed by Shinsaku SasakiWritten by Ichiro Okouchi
Episode 17
A World Without Lies
30m
Episode credits
Directed by Tatsuya IgarashiWritten by Ichiro Okouchi
Episode 18
The Sword's Fragility
30m
Episode credits
Directed by Naoyasu HabuWritten by Yuuichi Nomura
Episode 19
Leonetta's Nightmare
30m
Episode credits
Directed by Masayuki MiyajiWritten by Jiro Takayama
Episode 23
Overdevil Revival
30m
Episode credits
Directed by Yusuke YamamotoWritten by Jiro Takayama
Episode 26
Gain Over
30mfinale
Episode credits
Directed by Kunihiro MoriWritten by Ichiro Okouchi
Episode information updated Sep 11, 2026
Available now in United States
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More about Overman King Gainer
Cast
Hirofumi NojimaGainer Sanga (voice)
Otoya KawanoGain Bijou (voice)
Ai KobayashiSara Kodama (voice)
Noriko KitouPrincess Ana Medaiyu (voice)
Takehito KoyasuAsuham Boone (voice)
Toshiko SawadaMartena Lane (voice)Tadahisa SaizenToun (voice)
Takashi NakamuraZacchi Bronco (voice)Credits
- Created by
- Yoshiyuki Tomino
- Written by
- Ichiro Okouchi, Jiro Takayama, Miya Asakawa, Yuuichi Nomura
Production details
- Status
- Ended
- Series type
- Scripted
- Episodes
- 26
- Original language
- Japanese
- Original title
- OVERMANキングゲイナー
Networks & production
WOWOW PrimeJapan
SUNRISEJapan
Themes
animebased on novel or bookexodusmechareal robot