Sonic and His Freedom Fighters

 is an American animated action-adventure-science fiction television series based on  by Sega, being developed by Ian Jones-Quartey. It is produced by Sega of America and Warner Bros. Animation and it airs on WB Kids since September 5th, 2020.

Synopsis
Set a few weeks after the events of Sonic: Nega, Sonic and his friends continue their quest to fight the Eggman Empire's reign of terror while also exploring the wonders of Mobius and helping out whoever needs it.

Main

 * Sonic the Hedgehog (voiced by Jason Spisak) - a chill and heroic hedgehog who is out to protect TBD.
 * Miles "Tails" Prower (voiced by Lara Jill Miller) - an intelligent and resourceful twin-tailed fox who TBD.
 * Knuckles the Echidna (voiced by Nolan North) - a serious echidna who is the Guardian of the Master Emerald and TBD.
 * Amy Rose (voiced by Mae Whitman) - a friendly and rather feisty female hedgehog who is TBD.

From the video games

 * Cream the Rabbit (voiced by Jessica DiCicco) - TBD
 * Cheese the Chao (vocal effects by Jessica DiCicco) - TBD
 * Tiara Boobowski (voiced by Hynden Walch) - TBD
 * Shadow the Hedgehog (voiced by Dante Basco) - TBD
 * Rouge the Bat (voiced by Linda Cardellini) - TBD
 * E-123 Omega (voiced by Fred Tatasciore) - TBD
 * Silver the Hedgehog (voiced by Josh Keaton) - TBD
 * Blaze the Cat (voiced by Olivia Hack) - TBD
 * Marine the Raccoon (also voiced by Jessica DiCicco) - TBD
 * The Chaotix, consisting of:
 * Vector the Crocodile (voiced by Khary Payton) - TBD
 * Espio the Chameleon (voiced by Andrew Kishino) - TBD
 * Charmy Bee (voiced by Tara Strong) - TBD
 * Gazebo Boobowski (voiced by Rodger Bumpass) - TBD
 * Comd. Abraham Tower (voiced by Clancy Brown) - TBD
 * Agent Topaz (voiced by Elizabeth Daily) - TBD
 * Emerl (also voiced by Josh Keaton) - TBD
 * Tikal the Echidna (voiced by Alanna Ubach) - TBD
 * Big the Cat (voiced by Bill Fagerbakke) - TBD
 * Froggy (vocal effects by Dee Bradley Baker) - TBD
 * Honey the Cat (also voiced by Jessica DiCicco) - TBD
 * Vanilla the Rabbit (voiced by Grey Griffin) - TBD
 * Prof. Dillon Pickle (also voiced by Rodger Bumpass) - TBD
 * Lorelei the Arctic Fox (also voiced by Tara Strong) - TBD
 * The Savage Crew, consisting of:
 * Orion the Panda (voiced by Janice Kawaye) - TBD
 * Katrina the Panther (voiced by Danica McKellar) - TBD
 * Blast the Condor (voiced by Cristina Pucelli) - TBD
 * Fred the Motobug (voiced by Richard Steven Horvitz) - TBD

From other media

 * Sally Acorn (voiced by Kath Soucie) - a brave and TBD chipmunk who is [Sonic or/and Amy]'s childhood friend as TBD.
 * Nicole the A.I. Lynx (also voiced by Kath Soucie) - an artificial intelligence who assumes the form of Sally's TBD adoptive younger sister as TBD.
 * Tangle the Lemur (also voiced by Mae Whitman) - a playful and feisty lemur who leads a TBD.
 * Whisper the Wolf (voiced by Kari Wahlgren) - TBD
 * Jewel the Beetle (also voiced by Grey Griffin) - TBD

Show-exclusive

 * Sturdy the Ox (voiced by Ian Jones-Quartey) - a buff ox who is rather friendly as he TBD.

From the video games

 * Dr. Ivo "Eggman" Robotnik (voiced by Mark Hamill) - a mad scientist who plots to turn Mobius into his personal empire, roboticizing anyone who opposes his plans of world domination.
 * Orbot and Cubot (voiced by Jess Harnell and Tom Kenny, respectively) - Eggman's idiotic henchbots who are often shown to TBD.
 * Metal Sonic (also voiced by Jason Spisak) - TBD
 * Fang the Sniper (voiced by Dwight Schultz) - TBD
 * Bean the Dynamite (voiced by Rob Paulsen) - TBD
 * Bark the Polar Bear (vocal effects by Dee Bradley Baker) - TBD
 * The Deadly Six, consisting of:
 * Zavok (voiced by John DiMaggio) - TBD
 * Zazz (also voiced by Josh Keaton) - TBD
 * Zeena (voiced by Ashley Johnson) - TBD
 * Master Zik (also voiced by Mark Hamill) - TBD
 * Zomom (also voiced by Khary Payton) - TBD
 * Zor (voiced by Yuri Lowenthal) - TBD
 * Sara the Skunk (voiced by Nika Futterman) - a mad German-accented scientist who claims to be a TBD.

From other media

 * Scourge the Hedgehog (voiced by Max Mittelman) - TBD
 * Fiona Fox (also voiced by Lara Jill Miller) - TBD
 * Razor the Shark (voiced by David Faustino) - TBD

Show-exclusive

 * Snark the Bandicoot (voiced by Kate Micucci) - a sneaky and mischievous bandicoot who has vandalized around Mobius with the sole purpose of making fun of Sonic and his friends.
 * Geo the Mole (voiced by Kevin Michael Richardson) - a greedy mole who runs a secretive gem smuggling operation in Mobius.
 * Grower (voiced by Phil LaMarr) - a giant sentient plant who has been trying to eat Mobians and grow to a big size.
 * Chuck the Cheetah (voiced by TBD) - TBD

Episodes
See List of episodes.

Trivia

 * This series is set in the Sonic: Rebirth continuity.
 * When asked about adding characters from other continuities (such as comic books and television), Ian replied that he's likely to add some fan-favorites such as Sally Acorn, Nicole the Holo-Lynx, Sticks the Badger, Tangle the Lemur, Whisper the Wolf and Jewel the Beetle in a near future (especially since they already appear on Sonic: Across Mobius), although his priority is focusing on the game characters for now, eventually joining its canon by late Season 2.
 * The only exception in the beginning was Agent Topaz, since she originated from Sonic X.
 * Considering the series' timeline depends of the video game series' one, characters like the Babylon Rogues and Infinite would only show up after their game debut.

Easter eggs

 * On TBD when asked if he was to have an animal as a pet, Knuckles stated "Definitely not a snake like that cowboy idiot with her dumb snake", poking at Snake Cowgirl.
 * On TBD, Collin the Speedy Boy makes a brief appearance on TV in the background.
 * On TBD, when Sonic was having a nightmare one time, a silhouette that is strikingly similar to Little Hector is seen along with a bunch of other silhouettes.