Underground Random Encounters CR 9 v2
| d100 | Total CR | Name | Numbers | CR | Type | Size | Book |
| 1-2 | 9 | Juvenile Emerald Dragon | 1 | 9 | Dragon | Large | MM2 |
| 3-4 | 9 | Juvenile Mist Dragon | 3 | 6 | Dragon | Medium | Dragons of Faerûn |
| 5-6 | 9 | Juvenile Phaerimm | 5 | 5 | Aberration | Small | Lost Empires of Faerûn |
| 7-8 | 9 | Juvenile Sapphire Dragon | 1 | 9 | Dragon | Medium | MM2 |
| 9-10 | 9 | Kigrid | 5 | 5 | Aberration | Medium | Lords of Madness |
| 11-12 | 9 | Krathbairn | 2 | 7 | Outsider | Medium | Dragons of Faerûn |
| 13-14 | 9 | Legendary Ape | 2 | 7 | Animal | Medium | MM2 |
| 15-16 | 9 | Legendary Bear | 1 | 9 | Animal | Large | MM2 |
| 17-18 | 9 | Lesser Bonedrinker | 7 | 4 | Undead | Small | MM3 |
| 19-20 | 9 | Lesser Flame Snake | 2 | 7 | Magical Beast | Medium | Fiend Folio |
| 21-22 | 9 | Lion Topiary Guardian | 2 | 7 | Plant | Large | MM3 |
| 23 | 9 | Lodestone Marauder | 1 | 9 | Aberration | Large | MM4 |
| 24 | 9 | Lolth’s Sting | 5 | 5 | Humanoid | Medium | MM4 |
| 25 | 9 | Metalmaster | 4 | 5 | Magical Beast | Large | Lost Empires of Faerûn |
| 26 | 9 | Mind Flayer, Vampire | 1 | 9 | Undead | Medium | Lords of Madness |
| 27 | 9 | Minotaur of Legend | 3 | 6 | Outsider | Large | MM2 |
| 28 | 9 | Minotaur Skeleton | 11 | 3 | Undead | Large | Libris Mortis |
| 29 | 9 | Minotaur Zombie | 7 | 4 | Undead | Large | MM1 |
| 30 | 9 | Mockery Drone | 1 | 9 | Magical Beast | Medium | MM5 |
| 31 | 9 | Monstrous Vampire Yuan-Ti Abomination | 1 | 9 | Undead | Large | Ghostwalk |
| 32 | 9 | Mummified Ogre | 4 | 5 | Undead | Large | Libris Mortis |
| 33 | 9 | Mummy | 4 | 5 | Undead | Medium | MM1 |
| 34 | 9 | Murk | 11 | 3 | Undead | Medium | Libris Mortis |
| 35 | 9 | Myconid Circle Leader | 3 | 6 | Plant | Large | MM2 |
| 36 | 9 | Necropolitan, 5th-Level Human Wizard | 5 | 5 | Undead | Medium | Libris Mortis |
| 37 | 9 | Nether Hound Ghast | 7 | 4 | Undead | Medium | Dragon #322 |
| 38 | 9 | Nifern | 12 | 2 | Animal | Medium | Serpent Kingdoms |
| 39 | 9 | Ophidian | 12 | 2 | Humanoid | Medium | Fiend Folio |
| 40 | 9 | Painspeaker | 6 | 4 | Undead | Medium | Tome of Magic |
| 41 | 9 | Plague Ant Swarm | 5 | 5 | Vermin | Fine | Fiend Folio |
| 42 | 9 | Prismatic Roper | 1 | 9 | Aberration | Large | MM3 |
| 43 | 9 | Quth-maren | 2 | 7 | Undead | Medium | Fiend Folio |
| 44 | 9 | Rat Swarm | 12 | 2 | Animal | Tiny | MM1 |
| 45 | 9 | Ravenous Ghoulish 1st-level Halfling Warrior | 12 | 2 | Undead | Small | Dragon Compendium - Volume I |
| 46 | 9 | Relief Golem | 1 | 9 | Construct | Large | Dragon #334 |
| 47 | 9 | Ripper | 3 | 6 | Aberration | Medium | Cityscape |
| 48 | 9 | Rogue Eidolon | 1 | 9 | Construct | Large | MM2 |
| 49 | 9 | Rot Grub Swarm | 3 | 6 | Vermin | Diminutive | Dungeonscape |
| 50 | 9 | Roving Mauler | 10 | 3 | Magical Beast | Medium | Tome of Magic |
| 51 | 9 | Rylkar Harridan | 1 | 9 | Magical Beast | Huge | MM5 |
| 52 | 9 | Saltor | 11 | 3 | Aberration | Small | Lords of Madness |
| 53 | 9 | Sanguineous Drinker | 5 | 5 | Undead | Medium | MM5 |
| 54 | 9 | Shadow | 11 | 3 | Undead | Medium | MM1 |
| 55 | 9 | Shrapnyl | 2 | 7 | Construct | Large | MM2 |
| 56 | 9 | Skulking Cyst | 7 | 4 | Undead | Small | Libris Mortis |
| 57 | 9 | Skum | 15 | 2 | Aberration | Medium | MM1 |
| 58 | 9 | Skuz | 1 | 9 | Undead | Large | Dragon #352 |
| 59 | 9 | Smoke Drake | 1 | 9 | Dragon | Large | Draconomicon |
| 60 | 9 | Spawn of Kyuss | 4 | 5 | Undead | Medium | MM2 |
| 61 | 9 | Spectral Spitting Felldrake | 4 | 5 | Undead | Medium | Dragons of Faerûn |
| 62 | 9 | Spectral Steed | 11 | 3 | Undead | Large | Ghostwalk |
| 63 | 9 | Spectre | 2 | 7 | Undead | Medium | MM1 |
| 64 | 9 | Stained Glass Golem | 5 | 5 | Construct | Medium | MM2 |
| 65 | 9 | Stained Glass Half-Golem | 11 | 3 | Construct | Medium | MM2 |
| 66 | 9 | Stone Flyer | 10 | 3 | Magical Beast | Large | Underdark |
| 67 | 9 | Stone Half-Golem | 7 | 4 | Construct | Medium | MM2 |
| 68 | 9 | Stonesinger | 2 | 7 | Aberration | Large | MM3 |
| 69 | 9 | Susurrus | 2 | 7 | Aberration | Large | MM3 |
| 70 | 9 | Swordwraith | 2 | 7 | Undead | Medium | Fiend Folio |
| 71 | 9 | Tall Mouther | 5 | 5 | Aberration | Large | Monsters of Faerûn |
| 72 | 9 | Thunder | 3 | 6 | Outsider | Medium | Dragon #317 |
| 73 | 9 | Ti-khana Deinonychus | 5 | 5 | Magical Beast | Large | Fiend Folio |
| 74 | 9 | Tooth Beast | 2 | 7 | Aberration | Large | Tome of Magic |
| 75 | 9 | Uchuulon | 3 | 6 | Aberration | Large | Stormwrack |
| 76 | 9 | Umber Hulk | 2 | 7 | Aberration | Large | MM1 |
| 77 | 9 | Umber Hulk Zombie | 5 | 5 | Undead | Large | MM1 |
| 78 | 9 | Umbral Displacer Beast | 3 | 6 | Undead | Large | Libris Mortis |
| 79 | 9 | Very young Amethyst Dragon | 5 | 4 | Dragon | Medium | MM2 |
| 80 | 9 | Very young Brainstealer Dragon | 3 | 6 | Dragon | Large | Dragon #337 |
| 81 | 9 | Very young Chromium Dragon | 5 | 5 | Dragon | Medium | Dragon #356 |
| 82 | 9 | Very young Cobalt Dragon | 5 | 5 | Dragon | Small | Dragon #356 |
| 83 | 9 | Very young Deep Dragon | 3 | 6 | Dragon | Small | Monsters of Faerûn |
| 84 | 9 | Very young Emerald Dragon | 5 | 5 | Dragon | Medium | MM2 |
| 85 | 9 | Very young Sapphire Dragon | 5 | 5 | Dragon | Small | MM2 |
| 86 | 9 | Voidwraith | 3 | 6 | Undead | Medium | Libris Mortis |
| 87 | 9 | War Bat | 5 | 5 | Animal | Huge | MM2 |
| 88 | 9 | Wardrake | 1 | 9 | Dragon | Huge | Dragon #309 |
| 89 | 9 | Wight | 11 | 3 | Undead | Medium | MM1 |
| 90 | 9 | Wraith | 5 | 5 | Undead | Medium | MM1 |
| 91 | 9 | Young Adult Phaerimm | 1 | 9 | Aberration | Medium | Lost Empires of Faerûn |
| 92 | 9 | Young Amethyst Dragon | 2 | 7 | Dragon | Medium | MM2 |
| 93 | 9 | Young Brainstealer Dragon | 1 | 9 | Dragon | Large | Dragon #337 |
| 94 | 9 | Young Chromium Dragon | 2 | 7 | Dragon | Medium | Dragon #356 |
| 95 | 9 | Young Cobalt Dragon | 2 | 7 | Dragon | Medium | Dragon #356 |
| 96 | 9 | Young Emerald Dragon | 2 | 7 | Dragon | Medium | MM2 |
| 97 | 9 | Young Hex Dragon | 3 | 6 | Dragon | Medium | Dragon #343 |
| 98 | 9 | Young Mist Dragon | 5 | 5 | Dragon | Medium | Dragons of Faerûn |
| 99 | 9 | Young Sapphire Dragon | 2 | 7 | Dragon | Medium | MM2 |
| 100 | 9 | Young Shadow Dragon | 3 | 6 | Dragon | Small | Draconomicon |
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