| Name | Country | City | Rating | |
|---|---|---|---|---|
 Ooz (Adam Powroźnik) | Ooz (Adam Powroźnik) | Poland | Czanstochova (Częstochowa) | 0.00 ±0.0 |
| OSon (Bastian Buehrig) | Germany | 0.00 ±0.0 | ||
| Old Man Tower (Dieter Gretzschel) | Germany | Berlin | 0.00 ±0.0 | |
| Odyn1ec (Jarek Wyszyñski) | Poland | 0.00 ±0.0 | ||
| OxC0FFEE (Kim Slawson) | United States | 0.00 ±0.0 | ||
| O.M. | 0.00 ±0.0 | |||
| OZK (Odd Skancke) | Norway | 0.00 ±0.0 | ||
| Oleg | 0.00 ±0.0 | |||
| Orko | 0.00 ±0.0 | |||
| Oswald | Hungary | 0.00 ±0.0 | ||
| OxF | 0.00 ±0.0 | |||
| Ozan | Germany | Duisburg | 0.00 ±0.0 | |
| The Outsider | 0.00 ±0.0 |
