Sonic has had no shortage of iconic antagonists from across the series, from the older games that just had Robotnik fill that role, to the stranger antagonists of the 2000s, then back to having just Eggman for a while in the 2010s.

This list will show off the most memorable, iconic, and beloved characters from across the series. These are mostly sorted by how likely someone who doesn't care about Sonic is to recognize them, which I would know since I grew up as a Sonic-loving child with parents who knew nothing about video games.