| Twilight Dark MenderNPC #45266 | Unknown | Normal | Identity record |
| Twilight EarthbinderNPC #47407 | Unknown | Normal | Identity record |
| Twilight FlamerenderNPC #224240 | Unknown | Normal | Identity record |
| Twilight HydromancerNPC #52074 | Unknown | Normal | Identity record |
| Twilight HydromancerNPC #52138 | Unknown | Normal | Identity record |
| Twinspire DeathguardNPC #66272 | Unknown | Normal | Identity record |
| Twisted ElementalistNPC #120636 | Unknown | Normal | Identity record |
| Ty'foon the AscendedNPC #191354 | Unknown | Normal | Identity record |
| Uldir Defensive BeamNPC #140286 | Unknown | Normal | Identity record |
| Uldum Mercenary TestNPC #46105 | Unknown | Normal | Identity record |
| Ultra-Kerploder 2500<Limited Edition> · NPC #67607 | Mechanical | Special | Identity record |
| Umbrafen SlavebinderNPC #18042 | Unknown | Normal | Identity record |
| Umbrafen WitchdoctorNPC #20115 | Unknown | Normal | Identity record |
| Umbrawarden ShadinosNPC #264669 | Unknown | Normal | Identity record |
| Unbound Flame SpiritNPC #40065 | Unknown | Normal | Identity record |
| Unbound Flame SpiritNPC #40080 | Unknown | Normal | Identity record |
| Unbound ShademongrelNPC #175819 | Beast | Normal | Identity record |
| Unbreakable DefenderNPC #174488 | Unknown | Normal | Identity record |
| Unbroken GladerunnerNPC #160559 | Beast | Normal | Identity record |
| Uncontrolled AnimateNPC #159050 | Unknown | Normal | Identity record |
| Uncrowned BlacksmithNPC #119523 | Unknown | Normal | Identity record |
| Undead Druid TrainerNPC #2217 | Unknown | Normal | Identity record |
| Undead FleshshacklerNPC #261470 | Unknown | Normal | Identity record |
| Undead FleshshacklerNPC #261747 | Unknown | Normal | Identity record |
| Underbelly CoilguardNPC #263329 | Unknown | Normal | Identity record |
| Underbelly CoilguardNPC #274847 | Unknown | Normal | Identity record |
| Undercity AristocratNPC #118516 | Unknown | Normal | Identity record |
| Undercity AristocratNPC #118702 | Unknown | Normal | Identity record |
| Underhang JawcrawlerNPC #225981 | Beast | Normal | Identity record |
| Underkeep TechnicianNPC #227487 | Unknown | Normal | Identity record |
| Underlight Crag MothNPC #230925 | Beast | Normal | Identity record |
| Undersea AbominationNPC #214348 | Unknown | Normal | Identity record |
| Undersea AbominationNPC #247461 | Unknown | Normal | Identity record |
| Undersea SalamantherNPC #227608 | Beast | Normal | Identity record |
| Undersea SalamantherNPC #228823 | Beast | Normal | Identity record |
| Undertide LuremancerNPC #226953 | Unknown | Normal | Identity record |
| Undol the HerdmasterNPC #136857 | Unknown | Normal | Identity record |
| Undulating BoneslimeNPC #108327 | Unknown | Normal | Identity record |
| Undulating BoneslimeNPC #110803 | Unknown | Normal | Identity record |
| Unfinished RunebladeNPC #168637 | Unknown | Normal | Identity record |
| Unidentified CentaurNPC #190486 | Unknown | Normal | Identity record |
| Uninvited AbsolutistNPC #165724 | Unknown | Normal | Identity record |
| Uninvited SoulflayerNPC #171730 | Unknown | Normal | Identity record |
| Uninvited WorldeaterNPC #171738 | Unknown | Normal | Identity record |
| Unkindness of RavensNPC #109311 | Unknown | Normal | Identity record |
| Unleashed FloodwaterNPC #186369 | Unknown | Normal | Identity record |
| Unmoored Phase DiverNPC #237208 | Unknown | Normal | Identity record |
| Unmoored Phase DiverNPC #237380 | Unknown | Normal | Identity record |
| Unmoored Phase DiverNPC #237383 | Unknown | Normal | Identity record |
| Unpaid Rocket InternNPC #147937 | Unknown | Normal | Identity record |
| Unpaid Rocket InternNPC #147940 | Unknown | Normal | Identity record |
| Unsalted Water SnailNPC #198216 | Unknown | Normal | Identity record |
| Unseen Path StandardNPC #117796 | Unknown | Normal | Identity record |
| Unshackled ProtectorNPC #156258 | Unknown | Normal | Identity record |
| Unshackled ProtectorNPC #156262 | Unknown | Normal | Identity record |
| Unstable Dark MatterNPC #124964 | Unknown | Normal | Identity record |
| Unstable Dark MatterNPC #128319 | Unknown | Normal | Identity record |
| Unstable Void EnergyNPC #270567 | Unknown | Normal | Identity record |
| Unstable Void PortalNPC #86194 | Unknown | Normal | Identity record |
| Unstable Void PortalNPC #89245 | Unknown | Normal | Identity record |