Synopsis

Paradigm City, a city of amnesia and a place of belonging. It remains populated by forgotten pasts and the ruins of their labors due to a calamity 40 years ago. Shrouded in a fog-like mystery, it is up to people like Roger Smith to shine a light through the mist. Acting as a professional negotiator and suave agent, Roger is a self-tailored ladies man whose only love is for funeral black. However, as he gets deeply involved with his clients, what often starts as a simple negotiation evolves into Roger saving Paradigm from crime and peril. In the process, Roger stumbles even deeper into the untold folds of the city. As a rule, things are hardly ever as they appear. Serving as gray knight in a gray world, Roger is not without allies. By his side are Norman, a loyal and widely skilled butler, and Dorothy, a human-like android with deadpan snark. Together with the relic Big O, a jet-black mecha of gargantuan size and weight, they help Roger serve iron justice to Paradigm's lurking villains as he discovers the truth about 40 years ago. [Written by MAL Rewrite]

Episodes

13 episodes
  1. 13 R-D R・D 19 Jan 2000
  2. 12 Enemy is Another Big! Enemy is Another Big 12 Jan 2000
  3. 11 Daemonseed 5 Jan 2000
  4. 10 Winter Night Phantom 15 Dec 1999
  5. 9 Beck Comes Back 8 Dec 1999
  6. 8 Missing Cat 1 Dec 1999
  7. 7 The Call from the Past 24 Nov 1999
  8. 6 A Legacy of Amadeus 17 Nov 1999
  9. 5 Bring Back My Ghost 10 Nov 1999
  10. 4 Underground Terror 3 Nov 1999
  11. 3 Electric City 27 Oct 1999
  12. 2 Dorothy, Dorothy 20 Oct 1999
  13. 1 Roger the Negotiator 13 Oct 1999

Characters & Staff

Garland, Oliver
Supporting
Shin Aomori (Japanese)
Masquerade Party Host
Supporting
John Snyder
Repairman
Supporting
Joe Romersa

Information

Japanese THEビッグオー
Studios Sunrise
Source Original
Licensors Bandai Entertainment, Sentai Filmworks
Rating 7.6
Broadcast Unknown
Aired 13 Oct 1999 – 27 Mar 2003
Synonyms Big O Roger, Big O

Last updated: 04 Sep 2026