Backbone entertainment, the developer of the PSP title Sonic Rivals were present at the Penny arcade Expo today. Of course, the company had brought along PSP’s complete with presumably prototype versions of Sonic Rivals. A photo taken at the famous expo of a PSP playing the game and showing the character select screen reveals that there is a slot taken by an as-of-yet unknown secret character;
As metioned, it is currently unknown who the secret character is. And Backbone entertainment has not elaborated on who the secret character is at the expo. But when we know, you shall know. Also, thanks to Super Mecha Sonic and King Ubu of the SSMB for the tip off.
Stay tuned to the Sonic stadium and Sonic news for more information as it is revealed.