- 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.
- Woodland Kingsmen - defenders of Avalon
- Desert Raiders - defenders of Shamar
- 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 Fighters 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 primary 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 (now known as simply the "Freedom Fighters") as well as the Wolf Pack. At least one of the former Mercia Freedom Fighters also returned as a member of the Woodland Kingsmen.
- Most, if not all of the Freedom Fighter groups in the new timeline besides the main Freedom Fighters seem to go under specific names other than just "[area] Freedom Fighters".