Amy first appeared on Sonic the Hedgehog CD/Sonic CD in 1993. She was a girl hedgehog who dabbled in fortune telling. Upon learning of Sonic's appearance, she chased Sonic in the first Act of the game. In the second act, she gets kidnapped by Metal Sonic. Sonic rescues her in the game, but dashes off. Amy had proclaimed him her boyfriend, even though he didn't think that way of her.
Amy wore a green polo shirt, an orange shirt, and purple sneakers. Her hair/quills was/were the same style as Sonic's.
She later appeared in Sonic Drift and Sonic Drift 2 as a playable character. She made it into the edutainment title Sonic's Gameworld as well. Amy became a minor character in the Sonic Archie Comics. In that universe, she is polite and doesn't barge into the relationship between Sonic and Princess Sally.
In 1996, she appeared in the arcade game Sonic the Fighters (Sonic Championship in the U. S.). She got her weapon, the Piko Piko Hammer. In the Sonic the Comic (Fleetway), which she had appeared in prior in, she already got the crossbow as her weapon prior to this game.
She also got an appearance in Sonic R as a playable character.
Sonic Adventure in 1998 thrusted Amy in the spotlight. Her coif was redesigned, and she now wore a red dress and red and white boots. She was given green eyes, the same eye color as Sonic had. She was playable and still had her weapon of choice, the Piko Piko Hammer. She also kept that weapon for Sonic Advance.
She was a supporting character in Sonic Adventure 2, but she got a secret playable appearance in Sonic Advance 2.