Its Amy Rose Lovable, cute, slightly annoying, pink hedgehog!
Stats:
once known as Rosy the Rascal, is a video game character who appears in many of the Sonic the Hedgehog series of video games developed by Sega's Sonic Team. Amy Rose was created by Kazuyuki Hoshino (Sonic Team USA Art Director). She is a pink, female, anthropomorphic, humanoid hedgehog who plays the part of Sonic's self-proclaimed girlfriend. She has chased Sonic since her first debut in 1993, and has been trying to win his heart in everything from the series' animated TV shows to comics and games. She is the first female character introduced into the game universe and is also one of the most popular, coming in fifth place on an official popularity poll.[2]
Like Sonic and other characters in the series, Amy is significantly shorter and lighter than humans her same age. To be precise, she is 12 years old, 90cm (2ft 11in) tall, and keeps her weight a secret (much like the other female characters).[1] She was described as being 8 years old in Sonic CD, but as of Sonic Adventure and onwards she has grown older (by 4 years). Also, with the addition of Cream the Rabbit, Amy seems to have found herself a sidekick similar to Sonic's own Tails (as implied by Sonic Battle, Sonic Heroes, Sonic Advance 3, and Shadow the Hedgehog). Her clothes are a red dress, a headband, 2 golden wristbands and red boots.
The alias "Rosy the Rascal" is most likely a reference to her color, but it may even be a play on "Rosie the Riveter", a feminist character and national icon which represents the women that had to work during World War II when all of their husbands were drafted. The name is rather suiting as both characters are extremely tough and motivated females.