Big O Watch Order poster
Anime Completed 1999-2003

Big O Watch Order

Both seasons of Big O in order, from Roger the Negotiator in October 1999 through season 1 close to season 2 from January 2003 to The Show Must Go On. Amnesia city megadeus run across 26 episodes and two seasons.

Last updated October 8, 2026

Watch Order

0 / 2 watched

Two seasons in broadcast order.

About Big O

Big O is a Sunrise mecha noir from Kazuyoshi Katayama with Chiaki Konaka writing. Mitsuru Miyamoto voices Roger Smith, negotiator in memory wiped Paradigm City, with Akiko Yajima as android Dorothy and Big O in the basement. Keiichi Satou designs.

Season 1 ran thirteen episodes October 1999 to January 2000 on WOWOW after a cut from 26. Western reception won season 2 with Cartoon Network, thirteen episodes January to March 2003. The run closes on merged Big Venus reality. No further seasons came as ratings stalled.

Good to know

Watch season 1 before season 2. The memory Event mystery threads every negotiation, so the Negotiator premiere matters. Season 2 assumes the R.D. close watched. The Adult Swim mis airing of the finale is fixed on disc. Start at Roger the Negotiator, the ransom setup frames Paradigm and every megadeus after.