List of confirmed playable characters, bosses, and other characters in Sonic Frontiers from the Sonic the Hedgehog series. Bold characters debut in this entry. For the franchise character page, go here.
Characters in Sonic Frontiers
- Playable Characters: Sonic the Hedgehog
- "The Final Horizon" Playable Characters: Miles "Tails" Prower, Knuckles the Echidna, Amy Rose
- Major Antagonists: Dr. Eggman, Sage, The Titans, THE END
- Non-Playable Characters: Big the Cat, Koco, The Ancients
- "The Final Horizon" Non-Playable Characters: The Titan Pilots, Master King Koco
