| Name ▼ | Type | CR | Version | Book |
|---|---|---|---|---|
| Ruin Spider | Monstrosity | 5 | 2014 | The Book of Many Things |
| Ruin Grinder | Construct | 5 | 2014 | Strixhaven: A Curriculum of Chaos |
| Ruidium Elephant | Construct | 8 | 2014 | Critical Role: Call of the Netherdeep |
| Rug of Smothering | Construct | 2 | 2014 | 2014 Monster Manual |
| Rudolph van Richten | Humanoid | 5 | 2014 | Ravenloft: The Horrors Within |
| Rubblebelt Stalker | Humanoid | 1/2 | 2014 | Guildmasters' Guide to Ravnica |
| Rowboat Mimic | Monstrosity | 2 | 2014 | Waterdeep: Dungeon of the Mad Mage |
| Rotter | Construct | 5 | 2014 | Return to Glory |
| Rothé | Beast | 1/4 | 2014 | Multiple Books (CoA, VGM) |
| Rot Troll | Giant | 9 | 2014 | Multiple Books (MPMM, MTF) |