It's the rockin' debut of Sonic's first rival and the heavy-hitting fan-favorite Knuckles the Echidna! See how Sonic and Tails met the red warrior for the first time - and how they barely made it out alive! See what happenes when up-and-coming hero-in-training Tails gets too big for his Britches. And speaking of "big," while Dr. obotnik is huge, how is it he dwarfs the Freedom Fighters and puts them under glass?!