Anime characters with names beginning with letter O
| Image | Character Name | Record |
|---|---|---|
| Obelisk the Tormentor W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Obito Uchiha W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Oboro W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Oceanus Shenron W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Ogata Isshinsai W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Okita Sogo W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Okuyasu Nijimura W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Olivier Mira Armstrong W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Omega Shenron W: 6 L: 10 T: 0 | Wins: 6 Losses: 10 Ties: 0 | |
| Omnimon W: 2 L: 1 T: 0 | Wins: 2 Losses: 1 Ties: 0 | |
| Onio W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Ophelia (Claymore) W: 1 L: 0 T: 0 | Wins: 1 Losses: 0 Ties: 0 | |
| Orihime Inoue W: 3 L: 1 T: 0 | Wins: 3 Losses: 1 Ties: 0 | |
| Orochimaru W: 7 L: 13 T: 0 | Wins: 7 Losses: 13 Ties: 0 | |
| Orphen W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Oscar François De Jarjayes W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Otane Gouketsuji W: 0 L: 0 T: 0 | Wins: 0 Losses: 0 Ties: 0 | |
| Ouran High School Host Club W: 1 L: 1 T: 0 | Wins: 1 Losses: 1 Ties: 0 | |
| Outlaw Star W: 2 L: 2 T: 0 | Wins: 2 Losses: 2 Ties: 0 |
