Also known as: ガルヴァン
An amphibious race of tiny frog-like humanoid aliens featured in Ben 10. Grey Matter (Ben 10) is the Omnitrix's sample of a Galvan.
Albedo (Ben 10) was a Galvan prior to his transformation into a human Look-Alike of Ben. His form Ultimate Albedo (Ben 10) is an evolved Galvan.
The inventor of the Omnitrix, Azmuth, is a Galvan.