Rouge the Bat is a white antropomorphic bat with black wings, and she mainly works with Shadow the Hedgehog. She is also a part-time government spy.
Rouge is extremely sarcastic and never seems to lose her calm. She is also very secretive and cunning and can break into many places. Her weakness in being exposed to a high-pitched noise. Like Knuckles, she is a Treasure Hunter, so she likes rare jewels (It's like a game to her to steal the Master Emerald). Rouge is also often recognized as Shadow's girlfriend, as they are both part of Team Dark in games such as Sonic Heroes and Sonic Free Riders: Zero Gravity.