Characters and their tropes from the fan-made series, Steven Universe: Alternate Future, and all associated stories. For the original series, see here.
- Crystal Gems
- Humans of Beach City
- Residents of Little Homworld
- Lucent Gems
- Off Colors
- Gem Homeworld
- Metals
- Unaligned Gems
- Fusions
- Humans of Empire City
- P.H.A.N.T.O.M. and allies
- U.S. Government
- Humans of Lizwater Montana
- Lords of the Universe
- Coalition of Galaxies
- Vosania Syndicate
- The Intelliga
- Inhabitants of Sergion-29
- Slytherophidans
- Inhabitants of the Alternate Reality
- Other Characters
