Princess Sparklebutt

Princess Sparklebutt (which is her name - she is no more a princess than someone named "Daisy" is a flower) exists to be the butt of jokes. Her purpose in life is to act like a prissy, entitled stereotype, or otherwise serve as a caricature of human behavior, particularly in satirical contexts. Notable features are the tiny, floating wings on/behind her back, a smallish unicorn horn, a tiny heart marking under her right eye, a larger heart marking on her left ear, and a large white star marking on her back, with the arms wrapping around her sides to her front. Her horn and wings are covered in sparkles.

Is sometimes drawn as a pony, instead. When she is, she is a blue alicorn, with the same disembodied wings, and a star-and-hearts cutie mark.