To unlock super sonic you need to finish ALL missions, on EXTREME rank (gold).

You get "chaos emerald" as extreme gear [gear 46] (only useable with sonic). when you start a race you will keep walking until you have
collected at least 1 ring. Super Sonic's speed is like any other racer (around 150)

Parts:
Ring Capacity UP (up to 125 rings)
Ring Capacity UP (up to 150 rings)
Magnetic Barrier (unlimited ring magnet)

Skills:
- Can use POWER passages
- When you reach an amout of ringes (i dont know exacly which count, it'll be like 50-60) you get a blue-shield-like thing in front of sonic, and he'll go a bit faster (180) you can knock players down in this mode but you CANNOT take the bouncer passages.