Criaturas subhumanas que habitaron Hiperbórea, relacionadas con Tsathoggua .
| ▲Título▼ | ▲C▼ | ▲Año▽ | Autor | ▲V▼ | ▲Rel.▼ |
|---|---|---|---|---|---|
| A Cold Fire Within: A Mind-Bending Campaign for Pulp Cthulhu |    | 2019 | Christopher Smith Adair | — | Baja |
| The Dig | | 2009 | Brian Sammons | — | Alta |
| Appendix (to "The Compact Trail of Tsathoggua") |  | 1997 | Scott David Aniolowski | — | Alta |
| Creatures of the Mythos ("Ye Booke of Monstres") | | 1994 | Scott David Aniolowski, Fred Behrendt, John Carnahan, Larry DiTillio, Clifton Ganyard, Keith Herber, Randy McCall, Sandy Petersen, Kevin Ross, Gary Sumpter, Michael Szymanski | — | Media |
| Alien Races | | 1993 | Scott David Aniolowski, Keith Herber | — | Media |
| The Trail of Tsathogghua | | 1984 | Keith Herber | 5.00 | Media |
| The Scroll of Morloc: The History of the Shaman Yhemog |    ? | 1975 | Lin Carter | — | Alta |
The Seven Geases  |  | 1934 | Clark Ashton Smith | 7.00 | Alta |
| The Testament of Athammaus | | 1932 | Clark Ashton Smith | 7.50 | Baja |
