| Treasure Hunter | 40 | Mole Miner |
| Trick-or-Treater | 6 | Human |
| Trick-or-Treater | 6 | Human |
| Trick-or-Treater | 6 | Human |
| Trog | 42 | Trog |
| Trog | 42 | Trog |
| Trog Devourer | 42 | Trog |
| Trog Fledgling | 42 | Trog |
| Trog Striker | 42 | Trog |
| Trog Superior | 42 | Trog |
| Tumblin' Joe | 6 | Human |
| Tunnel Escort | 1 | Human |
| Tunnsley | 8 | Mr. Handy |
| Turret | 7 | Bubble Turret |
| Turret | 6 | Tripod Turret |
| Turret | 7 | Bubble Turret |
| Turret | 6 | Tripod Turret |
| Tutti Frutti | 1 | Cat |
| Tweed | 5 | Protectron |
| Tyrone Hayes | 1 | Human |
| U.S.S.A. Assaultron | 17 | Assaultron |
| U.S.S.A. Protectron | 50 | Protectron |
| U.S.S.A. Robobrain | 50 | Robobrain |
| Ultracite Abomination | 100 | Ultracite Abomination |
| Ultracite Terror | 0.1 | Scorchtongue |
| Ultracite Terror Tail | 0.1 | Scorchtongue Tail |
| Ultracite Titan | 100 | Ultracite Abomination |
| Ultracite Wendigo | 100 | Wendigo |
| Ultragenetic Cave Cricket | 95 | Cave Cricket |
| Ultragenetic Deathclaw | 95 | Deathclaw |
| Ultragenetic Gulper | 0.1 | Gulper |
| Ultragenetic Horde | 1 | Mothman |
| Ultragenetic Mirelurk | 95 | Mirelurk |
| Ultragenetic Mole Miner Stalker | 100 | Mole Miner |
| Ultragenetic Mole Rat | 95 | Mole Rat |
| Ultragenetic Radtoad | 95 | Radtoad |
| Ultragenetic Wendigo | 95 | Wendigo |
| Ultramite | 21 | Mole Rat |
| Unarmed Weapon Human | 1 | Human |
| Unarmed Weapon Stingwing | 1 | Stingwing |
| Underdweller | 66 | Human |
| Underdweller | 66 | Human |
| Underdweller Guard | 1 | Human |
| Uninvited Deathclaw Matriarch | 75 | Deathclaw |
| Uninvited Mirelurk Queen | 75 | Mirelurk Queen |
| Uninvited Scorchbeast | 75 | Scorchbeast |
| Uninvited Storm Goliath | 75 | Storm Goliath |
| Uninvited Wendigo Colossus | 100 | Wendigo Colossus |
| Union Beggar | 66 | Ghoul |
| Union Fighter | 1 | Human |