Underground Random Encounters CR 8 v2
| d100 | Total CR | Name | Numbers | CR | Type | Size | Book |
| 1-2 | 8 | Mind Flayer | 1 | 8 | Aberration | Medium | MM1 |
| 3-4 | 8 | Mind Flayer Shadow Flayer | 1 | 8 | Aberration | Medium | MM5 |
| 5-6 | 8 | Mindshredder Warrior | 5 | 4 | Aberration | Large | MM3 |
| 7-8 | 8 | Mindshredder Zenthal | 1 | 8 | Aberration | Medium | MM3 |
| 9-10 | 8 | Minotaur | 4 | 4 | Humanoid | Large | MM1 |
| 11-12 | 8 | Minotaur of Legend | 2 | 6 | Outsider | Large | MM2 |
| 13-14 | 8 | Minotaur Skeleton | 7 | 3 | Undead | Large | Libris Mortis |
| 15-16 | 8 | Minotaur Zombie | 5 | 4 | Undead | Large | MM1 |
| 17-18 | 8 | Mohrg | 1 | 8 | Undead | Medium | MM1 |
| 19 | 8 | Mummified Ogre | 3 | 5 | Undead | Large | Libris Mortis |
| 20 | 8 | Mummy | 3 | 5 | Undead | Medium | MM1 |
| 21 | 8 | Murk | 7 | 3 | Undead | Medium | Libris Mortis |
| 22 | 8 | Myconid Circle Leader | 2 | 6 | Plant | Large | MM2 |
| 23 | 8 | Myconid Guard | 5 | 4 | Plant | Medium | MM2 |
| 24 | 8 | Necropolitan, 5th-Level Human Wizard | 3 | 5 | Undead | Medium | Libris Mortis |
| 25 | 8 | Nether Hound Ghast | 5 | 4 | Undead | Medium | Dragon #322 |
| 26 | 8 | Nifern | 11 | 2 | Animal | Medium | Serpent Kingdoms |
| 27 | 8 | Ogre Savage Vampire | 5 | 4 | Undead | Large | Dragon #348 |
| 28 | 8 | Ophidian | 11 | 2 | Humanoid | Medium | Fiend Folio |
| 29 | 8 | Otyugh | 4 | 4 | Aberration | Large | MM1 |
| 30 | 8 | Painspeaker | 5 | 4 | Undead | Medium | Tome of Magic |
| 31 | 8 | Plague Ant Swarm | 3 | 5 | Vermin | Fine | Fiend Folio |
| 32 | 8 | Plague Blight | 2 | 6 | Undead | Medium | Libris Mortis |
| 33 | 8 | Pulverizer | 5 | 4 | Construct | Medium | MM2 |
| 34 | 8 | Rat Swarm | 11 | 2 | Animal | Tiny | MM1 |
| 35 | 8 | Ravenous Ghoulish 1st-level Halfling Warrior | 11 | 2 | Undead | Small | Dragon Compendium - Volume I |
| 36 | 8 | Ripper | 2 | 6 | Aberration | Medium | Cityscape |
| 37 | 8 | Rot Grub Swarm | 2 | 6 | Vermin | Diminutive | Dungeonscape |
| 38 | 8 | Roving Mauler | 7 | 3 | Magical Beast | Medium | Tome of Magic |
| 39 | 8 | Salt Mummy | 1 | 8 | Undead | Medium | MM3 |
| 40 | 8 | Saltor | 7 | 3 | Aberration | Small | Lords of Madness |
| 41 | 8 | Sanguineous Drinker | 3 | 5 | Undead | Medium | MM5 |
| 42 | 8 | Scaladar | 1 | 8 | Construct | Large | Waterdeep |
| 43 | 8 | Serpentflesh Golem | 1 | 8 | Construct | Large | Serpent Kingdoms |
| 44 | 8 | Shadow | 7 | 3 | Undead | Medium | MM1 |
| 45 | 8 | Shadow-Walker | 2 | 6 | Humanoid | Medium | Unapproachable East |
| 46 | 8 | Shardsoul Slayer | 3 | 5 | Construct | Medium | MM5 |
| 47 | 8 | Shield Guardian | 1 | 8 | Construct | Large | MM1 |
| 48 | 8 | Shredstorm | 1 | 8 | Construct | Fine | MM3 |
| 49 | 8 | Shyft | 20 | 1 | Outsider | Medium | Fiend Folio |
| 50 | 8 | Sinister | 7 | 3 | Magical Beast | Large | Monsters of Faerûn |
| 51 | 8 | Skulk | 8 | 2 | Humanoid | Medium | Fiend Folio |
| 52 | 8 | Skulking Cyst | 5 | 4 | Undead | Small | Libris Mortis |
| 53 | 8 | Skum | 11 | 2 | Aberration | Medium | MM1 |
| 54 | 8 | Skum Zombie | 20 | 1 | Undead | Medium | Libris Mortis |
| 55 | 8 | Slaughter Wight | 1 | 8 | Undead | Medium | Libris Mortis |
| 56 | 8 | Spawn of Kyuss | 3 | 5 | Undead | Medium | MM2 |
| 57 | 8 | Spectral Spitting Felldrake | 3 | 5 | Undead | Medium | Dragons of Faerûn |
| 58 | 8 | Spectral Steed | 7 | 3 | Undead | Large | Ghostwalk |
| 59 | 8 | Stained Glass Golem | 3 | 5 | Construct | Medium | MM2 |
| 60 | 8 | Stained Glass Half-Golem | 7 | 3 | Construct | Medium | MM2 |
| 61 | 8 | Stinger | 4 | 4 | Humanoid | Large | Monsters of Faerûn |
| 62 | 8 | Stone Flyer | 7 | 3 | Magical Beast | Large | Underdark |
| 63 | 8 | Stone Half-Golem | 5 | 4 | Construct | Medium | MM2 |
| 64 | 8 | Tall Mouther | 3 | 5 | Aberration | Large | Monsters of Faerûn |
| 65 | 8 | Tanarukk | 11 | 2 | Outsider | Medium | Monsters of Faerûn |
| 66 | 8 | Tangle Terror | 1 | 8 | Vermin | Medium | Drow of the Underdark |
| 67 | 8 | Thayan Golem | 1 | 8 | Construct | Medium | Monsters of Faerûn |
| 68 | 8 | Thoon Soldier | 1 | 8 | Construct | Medium | MM5 |
| 69 | 8 | Thunder | 2 | 6 | Outsider | Medium | Dragon #317 |
| 70 | 8 | Ti-khana Deinonychus | 3 | 5 | Magical Beast | Large | Fiend Folio |
| 71 | 8 | Troglodyte | 20 | 1 | Humanoid | Medium | MM1 |
| 72 | 8 | Troglodyte Zombie | 20 | 1 | Undead | Medium | MM1 |
| 73 | 8 | Uchuulon | 2 | 6 | Aberration | Large | Stormwrack |
| 74 | 8 | Umber Hulk Zombie | 3 | 5 | Undead | Large | MM1 |
| 75 | 8 | Umbral Displacer Beast | 2 | 6 | Undead | Large | Libris Mortis |
| 76 | 8 | Underdark Landwyrm | 1 | 8 | Dragon | Large | Draconomicon |
| 77 | 8 | Vampire Spawn | 5 | 4 | Undead | Medium | MM1 |
| 78 | 8 | Very young Amethyst Dragon | 3 | 5 | Dragon | Medium | MM2 |
| 79 | 8 | Very young Brainstealer Dragon | 2 | 6 | Dragon | Large | Dragon #337 |
| 80 | 8 | Very young Chromium Dragon | 3 | 5 | Dragon | Medium | Dragon #356 |
| 81 | 8 | Very young Cobalt Dragon | 3 | 5 | Dragon | Small | Dragon #356 |
| 82 | 8 | Very young Deep Dragon | 2 | 6 | Dragon | Small | Monsters of Faerûn |
| 83 | 8 | Very young Emerald Dragon | 3 | 5 | Dragon | Medium | MM2 |
| 84 | 8 | Very young Hex Dragon | 5 | 4 | Dragon | Medium | Dragon #343 |
| 85 | 8 | Very young Mist Dragon | 5 | 4 | Dragon | Small | Dragons of Faerûn |
| 86 | 8 | Very young Sapphire Dragon | 3 | 5 | Dragon | Small | MM2 |
| 87 | 8 | Very young Shadow Dragon | 5 | 4 | Dragon | Small | Draconomicon |
| 88 | 8 | Vivisector | 4 | 4 | Aberration | Medium | MM5 |
| 89 | 8 | Voidwraith | 2 | 6 | Undead | Medium | Libris Mortis |
| 90 | 8 | Wererat | 10 | 2 | Humanoid | Medium | MM1 |
| 91 | 8 | Wight | 7 | 3 | Undead | Medium | MM1 |
| 92 | 8 | Wraith | 3 | 5 | Undead | Medium | MM1 |
| 93 | 8 | Wyrmling Amethyst Dragon | 5 | 4 | Dragon | Small | MM2 |
| 94 | 8 | Wyrmling Brainstealer Dragon | 5 | 4 | Dragon | Medium | Dragon #337 |
| 95 | 8 | Wyrmling Deep Dragon | 5 | 4 | Dragon | Tiny | Monsters of Faerûn |
| 96 | 8 | Young adult Mist Dragon | 1 | 8 | Dragon | Large | Dragons of Faerûn |
| 97 | 8 | Young Deep Dragon | 1 | 8 | Dragon | Medium | Monsters of Faerûn |
| 98 | 8 | Young Hex Dragon | 2 | 6 | Dragon | Medium | Dragon #343 |
| 99 | 8 | Young Mist Dragon | 3 | 5 | Dragon | Medium | Dragons of Faerûn |
| 100 | 8 | Young Shadow Dragon | 2 | 6 | Dragon | Small | Draconomicon |
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