| Unphased | Wisconsin | 300 | 68 | 26 |
| untebabetegov (untebabetegov) | United Arab Emirates | 0 | 0 | 0 |
| unvasquesande (unvasquesande) | 2201 Ridges Road Baileys Harbor Wisconsin USA 54202 | 0 | 0 | 0 |
| Upwaffle29 | Oregon | 57 | 17 | 1 |
| urbancaver (urbancaver) | | 4 | 1 | 1 |
| UrbanMaster (UrbanMaster) | Minneapolis | 192 | 78 | 41 |
| Urjupa802 (Urjupa802) | Russia | 0 | 0 | 0 |
| Urocchlqe (Urocchlqe) | Россия | 0 | 0 | 0 |
| Urocchtux (Urocchtux) | Россия | 0 | 0 | 0 |
| Urohawk (urohawk) | Kansas City | 49 | 27 | 10 |
| ururproo (ururproo) | Россия | 0 | 0 | 0 |
| usarjj (rrrjjj) | WA | 195 | 69 | 25 |
| Username (UsernameJon) | St. Louis | 39 | 9 | 6 |
| Ustimchuk832 (Ustimchuk832) | Russia | 0 | 0 | 0 |
| Utbult (utbult) | Öckerö | 27 | 4 | 3 |