| Undine Princess | 33 | 3,430 | 334 | |
| Undine of the Hearth | 38 | 5,488 | 406 | |
| Undine Mystic | 87 | 24,630 | 882 | |
| Undine Keeper of Mysteries | 60 | 55,851 | 1,457 | |
| Undine Immortal | 45 | 6,058 | 456 | — |
| Undine Enchantress | 35 | 3,879 | 353 | |
| Undine Elemental | 36 | 4,946 | 364 | |
| Underworld Summoner | 11 | 701 | 99 | — |
| Undead Soldier | 55 | 22,000 | 647 | — |
| Undead Officer | 55 | 27,000 | 647 | — |
| Undead Army | 55 | 15,000 | 577 | — |
| Uncle Beetle | 60 | 14,454 | 15,554 | — |
| Unceasing Follower | 150 | 26,374 | 1 | |
| Umbral Hobwekin | 37 | 6,442 | 322 | — |
| Ultrafin Supreme | 88 | 25,907 | 890 | |
| Ultrafin Protector | 58 | 10,706 | 589 | |
| Ultrafin Devastator | 88 | 32,384 | 810 | — |
| Ultimate Devil Lord | 150 | 401,459 | 1 | |
| Tyrant: Tornada | 150 | 2,000,000 | 52,500 | — |
| Tyrant: Tornada | 150 | 2,500,000 | 5,250 | — |
| Tyrant: Tornada | 150 | 2,500,000 | 5,250 | — |
| Tyrant: Tornada | 150 | 2,500,000 | 5,250 | — |
| Tyrant: Tornada | 150 | 2,500,000 | 5,250 | |
| Tyrant: Icika | 150 | 1,000,000 | 17,500 | — |
| Tyrant: Icika | 150 | 2,500,000 | 1,750 | — |
| Tyrant: Icika | 150 | 2,500,000 | 1,750 | — |
| Tyrant: Icika | 150 | 2,500,000 | 1,750 | — |
| Tyrant: Icika | 150 | 2,500,000 | 1,750 | |
| Tyrant: Flamol | 150 | 2,000,000 | 52,500 | — |
| Tyrant: Flamol | 150 | 2,500,000 | 5,250 | — |
| Tyrant: Flamol | 150 | 2,500,000 | 5,250 | — |
| Tyrant: Flamol | 150 | 2,500,000 | 5,250 | — |
| Tyrant: Flamol | 150 | 2,500,000 | 5,250 | |
| Two-Headed Abomination | 37 | 5,271 | 329 | — |
| Twilight Wrath Fighter | 93 | 221,018 | 2,241 | — |
| Twilight Wrath Fighter | 100 | 380,187 | 2,754 | — |
| Twilight Wrath Fighter | 105 | 597,443 | 3,319 | — |
| Twilight Wrath Fighter | 93 | 1,105,088 | 6,725 | |
| Twilight Wrath Fighter | 100 | 1,900,935 | 8,765 | |
| Twilight Wrath Fighter | 105 | 2,588,918 | 11,067 | |
| Twilight Wrath Fighter | 105 | 2,588,918 | 11,067 | — |
| Twilight Witch | 91 | 28,017 | 726 | |
| Twilight Witch | 98 | 48,311 | 896 | |
| Twilight Witch | 103 | 76,206 | 1,081 | |
| Twilight Witch | 91 | 140,085 | 2,178 | |
| Twilight Witch | 98 | 241,554 | 2,849 | |
| Twilight Witch | 103 | 330,226 | 3,605 | |
| Twilight Witch | 103 | 330,226 | 3,605 | — |
| Twilight Minister: Vacuity | 150 | 5,994,276 | 1,317 | |
| Twilight Minister: Doom | 150 | 6,456,927 | 1,317 | |