* Sonic the Hedgehog: The main protagonist and a blue hedgehog with super speed.
* Tails: A two-tailed fox who is Sonic's best friend and a talented mechanic.
* Knuckles the Echidna: A red echidna who is the guardian of the Master Emerald and known for his strength.
* Amy Rose: A pink hedgehog who is in love with Sonic and uses a hammer to fight.
* Chris Thorndyke: A human boy who is Sonic's best friend in the *Sonic X* universe. He helps the Freedom Fighters by providing information and resources.
While the Freedom Fighters from the *Sonic X* series are mainly composed of these characters, other individuals like Cream the Rabbit, Big the Cat, and Vector the Crocodile occasionally assist the team.
It's important to note that the term "Freedom Fighters" is used less frequently for this specific group in the *Sonic X* anime than in other Sonic media.