Criaturas amorfas que parecen charcos de brea negra y que sirven a Tsathoggua.
| ▲Título▼ | ▲C▼ | △Año▼ | Autor | ▲V▼ | ▲Rel.▼ |
|---|---|---|---|---|---|
| The Mound |    | 1930 | Zealia Bishop, H. P. Lovecraft | 7.67 | Baja |
| The Cthulhu Mythos |    | 1981 | Sandy Petersen | — | Media |
| The Trail of Tsathogghua |  | 1984 | Keith Herber | 5.00 | Media |
| Nightmare in Norway | | 1985 | Marcus Rowland | — | Baja |
| Formless Spawn |   | 1988 | Sandy Petersen | — | Alta |
| Formless Spawn |   | 1988 | Tom Sullivan | — | Media |
| Vile Bodies | | 1996 | Gary O'Connell, Lucya Szachnowski | — | Alta |
| The Kidnapping |  | 2008 | Gareth Ryder-Hanrahan | 5.50 | Baja |
| Larve Amorphe de Tsathoggua | | 2015 | Loïc Muzy | — | Media |
| Formless Spawn |  | 2021 | Luis Merlo | — | Media |
