3 Months of intense planning, sketching and....photoshoping. lol

There is some characters not featured on this pic, that's becouse I set up some rules to help decide who I can use.
Cast Rules:
1: No Transformations/Duplicates. The large number of Supers had to be excluded from the pic. If I had Super Sonic on, then I would've had to have Super Knuckles/Shadow/Tails etc. Also I didn't want Sonic and Super Sonic in the same picture as separate characters, so this rule was also to count storybook versions and Neo Metal Sonic.
2: Must Have Been Playable. There is at least one playable character that I left out, I'll explain why in the relevant rule.
3: Important Story Characters. Pretty self explanatory.
4: No Spoilers. Mostly includes secret last bosses, I also included E-10000B (Playable on Free Riders.) as a spoiler too.
5: Must Have Appeared on at Least One Game. No hacked, glitched, axed, comic, TV, or fan characters.

Badniks and small animals are used to fill in spaces in the picture. There is at least one badnik from Sonic 1, 2 & 3.