Sonic Jump Fever

Unlock Silver:
When you get a Hero Chao (Normal, Rare, or S-Rare) you will unlock this futuristic hedgehog who travels back in time when the need arises to help deal with great threats to the planet that affect not only the present but also his future.

Unlock Shadow:
When you get 1600 rings this artificially created black and red hedgehog whose hover shoes propel him at extreme speeds that rival those of Sonic will become unlocked.