hd.thomson-multimediaThe Big O The Greatest Villain (1999–2003) watch online HD
- Original title:The Greatest Villain
- Category:TV Episode / Animation / Adventure / Sci-Fi / Action
- Released:1999–2003
- Director:Kenji Nakamura
- Actors:Mitsuru Miyamoto,Akiko Yajima,Motomu Kiyokawa
- Writer:Chiaki Konaka,Lia Sargent
- Duration:30min
- Video type:TV Episode
- Rating 6.7
- Votes 891
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Short summary
Beck once again busts out of jail and captures Roger as part of a scheme. Copying Roger's face and voice, he commands the Big O to go on a rampage.
| Episode cast overview, first billed only: | |||
 | Mitsuru Miyamoto | - | Roger Smith (voice) |
 | Akiko Yajima | - | R. Dorothy Wayneright (voice) |
| Motomu Kiyokawa | - | Norman Burg (voice) |
 | Tesshô Genda | - | Dan Dastun (voice) (as Tesshou Genda) |
 | Hôchû Ôtsuka | - | Jason Beck (voice) (as Yoshitada Ôtsuka) |
| Mitsuo Senda | - | Dove (voice) |
| Keiichi Sonobe | - | T-Bone (voice) |
| Junichi Sugawara | - | Legal Adviser (voice) |
| Katsumi Suzuki | - | Legal Adviser (voice) |
| Osamu Hosoi | - | Legal Adviser (voice) |
 | Steve Blum | - | Roger Smith (voice) (as Steven Blum) |
 | Lia Sargent | - | R. Dorothy Wayneright (voice) |
 | Alan Oppenheimer | - | Norman Burg |
 | Peter Lurie | - | Dan Dastun (voice) |
 | Bob Buchholz | - | Jason Beck (voice) (as Robert Buchholz) |