The Sonic the hedgehog Series is a series of Platformer games, similar to mario, but on a much faster Scale. The Following Characters are to be playable:

Knuckles

Metal Sonic

Shadow

Sonic

and in addition, Sonic The Hedgehog would contain the following Assist trophies:

Silver The Hedgehog: Uses Chaos Control to slow down time. If a foe gets too near him, Silver will deliver a medium power attack to him/her.

silver

Tails: Tails Comes out , targets one person, and unless they can dodge tails for 4 seconds straight, carries him past the blast line and ko's them Miles "tails" Prower