From Sonic Retro
For better or worse, the characters of the Sonic series are one of the defining features of the franchise. From Sonic the Hedgehog 2 onward, there has been a new character or two in nearly every video game in the series. Along with "core" characters Sonic, Tails, Knuckles, Amy Rose and Dr. Eggman, there have been major additions throughout the franchise's timeline, such as the Chaotix, Shadow and Silver and nearly 100 characters have shown up at some point or other in Sonic games. Some, such as Ray the Flying Squirrel and Fang the Sniper are one-hit wonders, inspiring something of a cult following; others, such as Mephiles the Dark and the Babylon Rogues have had a mixed reception in the Sonic scene, and some such as Omochao and the Deadly Six have hit the bottom of the barrel on the popularity scale. There are also "fanon" characters created by the scene such as ********** and Ashura.
In addition to the main characters of the series, there are figures in the different continuities of the Sonic universe, such as Sonic Underground, Sonic the Comic, and the Sonic the Hedgehog American comics. With these expansions, the cast of characters is even larger and more diverse.
This category has the following 11 subcategories, out of 11 total.