| Status | Name | Position | Date Registered | Posts | |
|---|---|---|---|---|---|
| unk_pone | 2014-01-26 | 0 | |||
| Unla | 2020-05-18 | 0 | |||
| Unlatrun | 2016-07-29 | 0 | |||
| Unlawful | 2023-09-12 | 0 | |||
| unleashedbrony | 2015-04-15 | 0 | |||
| UnleashedKitty | 2015-09-07 | 0 | |||
| Unlegit | 2014-06-16 | 0 | |||
| unleshdemon | 2014-08-10 | 0 | |||
| unley | 2021-04-01 | 0 | |||
| UnlicensedBrony | 2012-09-24 | 0 | |||
| Unlight | 2015-01-26 | 0 | |||
| Unlighted | 2023-06-15 | 0 | |||
| UnLiMiTeD | 2015-02-20 | 0 | |||
| UnlimitedGAMING | 2015-02-20 | 0 | |||
| Unluck | 2024-04-28 | 0 | |||
| UnluckyAmetyst | 2016-08-31 | 0 | |||
| UnluckyClover | 2018-07-27 | 0 | |||
| UnluckyDice | 2015-08-14 | 0 | |||
| Unluckykatt | 2014-10-05 | 0 | |||
| UnLuckyLadyBeast | 2022-03-06 | 0 | |||
| UnluckyMooCow | 2016-07-29 | 0 | |||
| UnluckyRed | 2020-07-16 | 0 | |||
| UnluckyStar | 2012-04-10 | 0 | |||
| unmemorablehero | 2013-07-09 | 2 | |||
| Unmin | 2018-11-17 | 0 | |||
| Unna | 2014-12-02 | 0 | |||
| Unnamed | 2015-08-16 | 0 | |||
| Unnamed Dragon | 2019-04-05 | 1 | |||
| Unnamed Storyteller | 2017-09-14 | 0 | |||
| unnamed655x1 | 2017-09-09 | 0 | |||