- Eternians
- Avionians
- Arachnas
- Dragons
- Gar
- Tidally locked planet, divided into a Light & Dark Hemisphere
- Covered in vast oceans & continents
- Wide variety of climatic & surface conditions
- Eternos (Capital)
- Castle Grayskull
- Snake Mountain
- Evergreen Forest
- Sands of Time
- Isles of Darksmoke
- Tar Swamp
- Crystal Sea
- Magic gave birth to Eternia, the first planet in all of creation
- Had a sister planet, called Etheria, linked by dimensional portals
- At its center was the Star Seed, a spark left over from the creation of the universe
