| Status | Name | Position | Date Registered | Posts | |
|---|---|---|---|---|---|
| UntD0 | 2018-08-13 | 0 | |||
| UntenArt | 2018-08-30 | 0 | |||
| Unter | 2023-09-07 | 0 | |||
| UntilDawn2003 | 2016-01-28 | 0 | |||
| UntilTheEndOfTime | 2015-04-20 | 0 | |||
| untilthesungoesdown | 2024-04-04 | 1 | |||
| Untiring Quill | 2014-04-18 | 0 | |||
| Untitled | 2017-09-18 | 0 | |||
| Untitled Spy | 2016-07-29 | 0 | |||
| Untitled-312 | 2019-07-28 | 0 | |||
| Untitled312 | 2020-02-15 | 0 | |||
| UntitledCopy | 2012-04-27 | 4 | |||
| UntitledKatrina | 2017-09-16 | 0 | |||
| Untitled_Dot_V | 2014-08-10 | 0 | |||
| Untold Story | 2015-08-15 | 0 | |||
| untrapito | 2018-01-09 | 0 | |||
| Untry | 2016-05-04 | 0 | |||
| UnU | 2017-12-08 | 0 | |||
| unused_password | 2022-10-11 | 0 | |||
| Unusual | 2014-08-28 | 0 | |||
| Unusual Pegasus | 2016-12-27 | 0 | |||
| Unusual Scoutaloo | 2014-08-01 | 0 | |||
| unusual scyra | 2013-09-14 | 0 | |||
| Unusual Sombra | 2013-07-10 | 0 | |||
| UnusualCrate | 2012-09-28 | 0 | |||
| UNUSUALDUDA123456 | 2017-11-03 | 0 | |||
| UnusualLegend | 2014-05-19 | 0 | |||
| unusually_dead | 2021-01-26 | 0 | |||
| unusualpony | 2013-07-08 | 0 | |||
| unvagocioso | 2014-04-18 | 0 | |||