Board Thread:Questions and Answers/@comment-9964494-20141106031052/@comment-32727373-20161204082540

Mystic Monkey wrote: True ages of the characters:

Sonic- 15 Tails- 8 Knuckles- 16 Amy- 12 Shadow- Unknown (Pressumed 50+) Rouge- 17 E-123- Unknown (Pressumed E-series creation) Big- 18 Cream- 6 Vector- 20 Espio- 16 Charmy- 6

These ages are confirmed in the Sonic Heroes manual.

Shadow is technically 50+ but physically 15 (as said on his wikia)

Silver - 14

Blaze  - 14

Eggman - Middle aged (said in Sonic Boom) but I don't know his exact age

Mephiles - technically 10, physically 15

And for the rest, I have no idea. ;w;