| Gray render | 12 | Monstrosity | Large | 19 | 189 | | chaotic neutral | | Mordenkainen's Tome of Foes | | | | | | |
| Gray slaad | 9 | Aberration (shapechanger) | Medium | 18 | 127 | | chaotic neutral | | Monster Manual | | | | | | |
| Graz zt | 24 | Fiend (demon, shapechanger) | Large | 20 | 346 | | chaotic evil | | Mordenkainen's Tome of Foes | | | | | | |
| Green abishai | 15 | Fiend (devil) | Medium | 18 | 187 | fly | lawful evil | | Mordenkainen's Tome of Foes | | | | | | |
| Green dragon wyrmling | 2 | Dragon | Medium | 17 | 38 | fly, swim | lawful evil | | Monster Manual (SRD) | 15 | 12 | 13 | 14 | 11 | 13 |
| Green hag | 3 | Fey | Medium | 17 | 82 | | neutral evil | | Monster Manual (SRD) | 18 | 12 | 16 | 13 | 14 | 14 |
| Green slaad | 8 | Aberration (shapechanger) | Large | 16 | 127 | | chaotic neutral | | Monster Manual | | | | | | |
| Grell | 3 | Aberration | Medium | 12 | 55 | fly | neutral evil | | Monster Manual (BR) | 15 | 14 | 13 | 12 | 11 | 9 |
| Grick | 2 | Monstrosity | Medium | 14 | 27 | | neutral | | Monster Manual (SRD) | 14 | 14 | 11 | 3 | 14 | 5 |
| Grick alpha | 7 | Monstrosity | Large | 18 | 75 | | neutral | | Monster Manual | | | | | | |
| Griffon | 2 | Monstrosity | Large | 12 | 59 | fly | unaligned | | Monster Manual (SRD) | 18 | 15 | 16 | 2 | 13 | 8 |
| Grimlock | 0.25 | Humanoid (grimlock) | Medium | 11 | 11 | | neutral evil | | Monster Manual (SRD) | 16 | 12 | 12 | 9 | 8 | 6 |
| Grung | 0.25 | Humanoid (grung) | Small | 12 | 11 | | lawful evil | | Volo's Guide to Monsters | | | | | | |
| Grung elite warrior | 2 | Humanoid (grung) | Small | 13 | 49 | | lawful evil | | Volo's Guide to Monsters | | | | | | |
| Grung wildling | 1 | Humanoid (grung) | Small | 13 | 27 | | lawful evil | | Volo's Guide to Monsters | | | | | | |
| Guard | 0.12 | Humanoid (any race) | Medium | 16 | 11 | | any alignment | | Monster Manual (SRD) | 13 | 12 | 12 | 10 | 11 | 10 |
| Guard drake | 2 | Dragon | Medium | 14 | 52 | | unaligned | | Volo's Guide to Monsters | | | | | | |
| Guardian naga | 10 | Monstrosity | Large | 18 | 127 | | lawful good | | Monster Manual (SRD) | 19 | 18 | 16 | 16 | 19 | 18 |
| Gynosphinx | 11 | Monstrosity | Large | 17 | 136 | fly | lawful neutral | Legendary | Monster Manual (SRD) | 18 | 15 | 16 | 18 | 18 | 18 |
| Halaster blackcloak | 23 | Humanoid (human) | Medium | 14 | 246 | | chaotic evil | | Adventures (Dungeon of the Mad Mage) | | | | | | |
| Half ogre | 1 | Giant | Large | 12 | 30 | | any chaotic alignment | | Monster Manual (BR) | 17 | 10 | 14 | 7 | 9 | 10 |
| Half red dragon veteran | 5 | Humanoid (human) | Medium | 18 | 65 | | any alignment | | Monster Manual (BR) | 16 | 13 | 14 | 10 | 11 | 10 |
| Harpy | 1 | Monstrosity | Medium | 11 | 38 | fly | chaotic evil | | Monster Manual (SRD) | 12 | 13 | 12 | 7 | 10 | 13 |
| Hawk | 0 | Beast | Tiny | 13 | 1 | fly | unaligned | | Monster Manual (SRD) | 5 | 16 | 8 | 2 | 14 | 6 |
| Hell hound | 3 | Fiend | Medium | 15 | 45 | | lawful evil | | Monster Manual (SRD) | 17 | 12 | 14 | 6 | 13 | 6 |