| Fire Ant | 8 | | No | Pierce | 50% Mind -50% Poison |
| Fire Elemental | 95 | Elemental | No | Nature | 20% Cut 50% Arrow 25% Nature 25% Mind -4% Body |
| Firefly Swarm | 8 | Vermin | No | Nature | 50% Arrow 20% Nature 20% Soul 20% Mind 20% Body |
| Flesh Blob | 18 | | No | | 15% Soul 15% Body |
| Floating Horror | 63 | | No | | 50% Magic Missile 50% Soul 25% Mind -10% Body |
| Fright | 27 | | No | Pierce | -10% Nature |
| Frost Giant | 74 | Giant | No | Cut | 25% Arrow |
| Frost Troll | 67 | | No | | 30% Cut |
| Frump the Cook | 7 | Goblin | Yes | Blunt | 50% Blunt 50% Pierce 50% Cut 25% Arrow 50% Magic Missile 50% Nature 50% Soul 50% Mind 50% Body 50% Poison 50% Disease |
| Fungoid | 79 | Fungoid | No | | 50% Nature |
| Fungoid Minion | 71 | Fungoid | No | | |
| Fungoid Warrior | 83 | Fungoid | No | | |
| Fungoid Wizard | 86 | Fungoid | No | | |
| Gazelle | 51 | | No | | |
| Gelatinous Cube A | 200 | | No | Nature | 50% Arrow 100% Magic Missile 100% Nature 100% Soul 100% Mind 100% Body |
| Gelatinous Cube B | 200 | | No | Nature | 50% Arrow 100% Magic Missile 100% Nature 100% Soul 100% Mind 100% Body |
| General Thrakk | 100 | | Yes | | 50% Blunt 20% Pierce 20% Cut 20% Arrow 20% Magic Missile 20% Nature -10% Soul 20% Body |
| Ghast | 114 | | No | Soul | -25% Blunt 75% Pierce 75% Cut 60% Soul 50% Mind -10% Body 100% Poison 100% Disease |
| Ghost | 23 | | No | Pierce | 25% Nature 25% Soul 25% Mind -10% Body 100% Poison 100% Disease |
| Ghost of Lotor I | 44 | | Yes | Blunt | 20% Blunt 20% Cut -4% Soul 25% Mind |