Silver the Hedgehog

Miles "Tails" Prower - He is a 8 year old younger-brother figure to Sonic, whom he idolizes, Tails is the youngest freedom fighter (since the season two episode "Drood Hedge"). Often left behind in Knothole Village during missions, he is incredibly bright. (also if season three was produced, he would have matured and played a much larger role as an official member of the Freedom Fighter team, even showing a bit of a rebellious side).