Casey the Rabfox is a purple rabfox (half rabbit half fox) and the girlfriend of Kyle the Hedgehog. She can fly higher than any sonic character due to her having ear-flying abilities like Cream, and the tail-flying abilities like Tails. She is truly random and has a habit of saying the most random things at the most random times. Example:
Kyle: Hey Casey, do you wanna see my new laptop?
Casey: *massive flying ninja kick* THE FOOT!
Kyle: *goes flying* *sigh*
Nevertheless, she is still Kyle's love interest. However, they are both kind of shy when it comes to this, and will team up and kill anyone who makes a romance joke.