| Status | Name | Position | Date Registered | Posts | |
|---|---|---|---|---|---|
| OpticSpace | 2014-02-05 | 0 | |||
| OpticSpooks | 2017-09-15 | 0 | |||
| optictears | 2012-09-30 | 0 | |||
| optika45 | 2014-01-25 | 0 | |||
| Optika46 | 2015-02-19 | 0 | |||
| Optimal Demise | 2018-07-04 | 0 | |||
| OptimisticOwl | 2017-09-28 | 0 | |||
| OPtimus | 2018-08-19 | 0 | |||
| optimus praim | 2022-04-10 | 0 | |||
| Optimus prime | 2014-01-22 | 0 | |||
| optimus12 | 2016-01-16 | 0 | |||
| Optimus13 | 2014-04-19 | 0 | |||
| optimusneal | 2013-11-10 | 0 | |||
| OptimusPrime | 2022-06-30 | 0 | |||
| optimusreacts | 2017-09-23 | 0 | |||
| Optimuss | 2021-10-23 | 0 | |||
| option350z | 2014-01-28 | 0 | |||
| OptionalSkulls | 2019-06-07 | 0 | |||
| Optitronus | 2013-12-23 | 0 | |||
| Opuch | 2015-08-13 | 0 | |||
| opugb | 2015-06-25 | 0 | |||
| Opus Magnum | 2013-07-08 | 0 | |||
| OqO | 2022-06-15 | 0 | |||
| Or4ngeJu1ce | 2021-03-07 | 0 | |||
| ora | 2014-01-24 | 0 | |||
| orabella | 2014-08-16 | 0 | |||
| Oracle | 2014-01-24 | 0 | |||
| Oracle450 | 2015-01-24 | 0 | |||
| OracleMyth | 2017-10-01 | 0 | |||
| Oracle_X2931 | 2022-08-16 | 0 | |||