These are the characters you start off with in the home console downloadable versions and handheld versions (including 3DS) of the game, while the Wii U version makes this the only characters playable.
|Sonic the Hedgehog|
|Miles "Tails" Prower|
|Knuckles the Echidna|
These are the characters you need to unlock for home console downloadable versions and handheld versions (including 3DS) of the game. You need to download some other Sonic games in order to unlock these characters in the Home Console version.
|Image||Name||How to Unlock in Home Console Versions||How to Unlock in Handheld Versions|
|Shadow the Hedgehog||Finish the Last Story of Sonic Adventure 2 Battle||Buy for 500 rings at the Character Shop|
|Rouge the Bat||Finish the Dark Story of Sonic Adventure 2 Battle||Buy for 750 rings at the Character Shop|
|Chaos||Finish Sonic Adventure DX or own any kind of Chaos Chao in Sonic Adventure 2 Battle in the Chao Garden||Collect all Chaos Emeralds and defeat the Green Grove Valleys boss battle as Super Sonic|
|Amy Rose||Finish Sonic the Fighters as Amy.||Buy for 950 rings or 10 Red Star rings at the Character Shop|
|Blaze the Cat||Finish Crisis City in Sonic Generations||Buy for 20 Red Star Rings at the Character Shop or beat the game once as Sonic|