Sonic the Hedgehog - It's Booba Bat.

She looks like someone would assume is Rouge, only for Rouge to walk in at the moment and for everyone to realize that they are two different people.

I'm sure someone could make a rig for it in a month. The Sonic fanbase recently made a PC port of Sonic (2006) in Unity that is a major improvement over the original, so I feel that this would fairly trivial in comparison.