Galvan Prime, or Galvan Mark II is the home planet of the Galvans.
From space, Galvan Prime is a pale green world with what looks like a giant crater with a large dark green area around it. Galvan Prime is one of the most scientifically advanced worlds in the galaxy. Miniature skyscrapers and ultra-fast causeways litter the landscape, thus leaving little room for nature.
- Azmuth (Creator of the Omnitrix)
- Albedo (Formerly Galvan, formerly an inhabitant of Galvan Prime, exiled to Earth)
- Derrick J. Wyatt (Museum guide)
- Blukic (Galvan scientist, formerly an inhabitant of Galvan Prime, currently on Earth)
- Driba (Galvan scientist, formerly an inhabitant of Galvan Prime, currently on Earth)
- An Unexpected Upgrade (first reappearance)
Ben 10: The Omniwars
- Memories Last Forever (first re-appearance)
- Blukic and Driba Go to Perplexahedron
- The Reification of Eunice
- The Golden Age, Part 1 and 2
- Some Galvans still call Galvan Mark II, Galvan Prime.