- For specific groups of Freedom Fighters, see Freedom Fighters (disambiguation).
The Freedom Fighters are a series of resistance groups created to oppose the tyranny of the Eggman Empire.
- Avalon Freedom Fighters - defenders of Avalon
- Desert Raiders - defenders of Shamar
- Knothole Freedom Fighters - defenders of the Kingdom of Acorn and all of Sonic's World
- Shijin Warriors - defenders of Chun-Nan
- Wolf Pack - defenders of the Thunder Plains Zone
Freedom Fighter groups typically act as individual cells, though they have sometimes worked together on missions. It has been rare for any group to have more than a dozen members. Typically, they prefer to use espionage, sabotage and guerrilla warfare. However, the Knothole Freedom Fighters in particular have been known to stage frontal assaults periodically, and have at times enlisted other Freedom Fighter groups in such action as well.
- The new reality saw the return of the Knothole Freedom Fighters, with the existence of the Wolf Pack being implied by a mention of Lupe. At least one of the former Mercia Freedom Fighters also returned as a member of the new Avalon Freedom Fighters.
- Some of the Freedom Fighter groups in the new timeline seem to go under specific names other than just "[area] Freedom Fighters".