A little late but consider this my tribute to Sonic the Hedgehog's 21st anniversary. Here's my list of top fifty Sonic characters from the games, comics and cartoons. The music is "It Doesn't Matter" from Sonic Adventure.
I can't do a top 50, I will do a top 20 1 Shadow 2 Sonic 3 Tails 4 Silver 5 Dr.Eggman/Robotnik 6 Amy 7 Knuckles 8 Metal Sonic 9 Cosmo 10 Rouge 11 Blaze 12 Vector 13 Espio 14 Charmy 15 Cream 16 Manic 17 Sonia 18 Tikal 19 E-102 Gamma 20 Mephiles