Amy's designer is Hiroyuki Hoshino. However, Amy was not the original character of the production team, but first appeared in the sonic the hedgehog cartoon of 1992. In the cartoon, she is called "Nikki's girlfriend (Nikki is Sonic)". Sega adopted this character and after the redesign of Hoshino Kazuo, Amy became a new character with a ponytail and a green suit similar to a princess dress, as a new plot element in the 1993 game Sonic CD. Her age was set at 8 years old. Since then, Amy Rose has often appeared in many Sonic games.

This is not what Amy looks like when we see her. 1998, when the game Sonic Adventure on DC was developed, the designer of SonicTeam Uekawa Yuji decided to redesign all the characters, including Amy. So the original "naughty Rosy" disappeared, replaced by short hair, wearing a red hairband, a red dress and red and white high-heeled boots, and her age became a modern girl of 12 years old. Amy Rose has become more pestering than before, and her personality seems to be more pungent. Her new weapon, the red hammer "Piko Piko" (first appeared in arcade game Sonic the Fighters), has almost become Sonic's heart disease. From then on, Amy will appear in almost every Sonic game, and continue to chase Sonic around to create interesting jokes for people who like her. Sonic first met Amy on an asteroid. Amy was brought here by a card that said "Destiny's Encounter", and Sonic came to find out Dokuta Egguman's plot. There is no doubt that Amy soon regarded Sonic as the person predicted by the card, and the troublesome Amy got the nickname Rosy the Rascal. But it's not that simple. The evil robot Metal Sonic made in Dokuta Egguman kidnapped Amy and asked Sonic to fight Metal Sonic. Finally, Sonic defeated Metal Sonic and rescued Amy, and Amy began her endless unrequited love. (Sonic CD story. )

(Note: The name Rosy the Rascal may come from "Rosie the Riveter", a famous American poster during World War II. There is a woman in overalls with a clenched fist on her elbow and the sentence "We can do it!" It is intended to encourage housewives whose husbands were signed into the army during World War II and had to work as coolies. )