Snake vs. Sonic
Okay, it's twenty minutes after my previous post. I cleared Classic Mode with Solid Snake. I faced Sonic at the end and I got him. He was basically destroying me because Snake has some pretty slow moves, but good thing for that Smash Ball. Sonic was no match for Snake's grenade launcher.
So I tried Sonic out on Battlefield against Olimar. He doesn't have a projectile move which is bad but it's okay. His Final Smash is his only weakness: be careful where you go with that. It took me off screen and then I lost the power and fell to my blue, speedy death.
Also, now that I have Sonic (my thirtieth character) I have enough characters to unlock Mr. Game & Watch. (You have to clear target test with thirty characters on any difficulty.)