To GreyAlbert: the art made me want to check as well.
* Sonic the Hedgehog: 15
* Miles "Tails" Prower: 8
* Knuckles the Echidna: 16
* Amy Rose: 12
* Cream the Rabbit: 6
* Rouge the Bat: 18
* Big the Cat: 18
* Vector the Crocodile: 20
* Charmy Bee: 6
* Espio the Chameleon: 16
* Jet the Hawk: 14
* Storm the Albatross: 19
* Wave the Swallow: 18
* Blaze the Cat: 14
* Silver the Hedgehog: 14
* Tikal: 14
* Marine the Raccoon: 7