A cheerful, optimistic and energetic go-getter, Amy is a determined young hedgehog who lets nothing stand in her way. She is girly and sweet, but also temperamental and has a hard time taking a "no" for an answer. She is best known for her long-standing crush on Sonic, whom she would follow anywhere (if he let her). Like Sonic, she also sometimes find fun in fighting Badniks.

The time Amy spent in the Resistance has caused her to mature to a great degree. While still obsessed with Sonic and her crush on him, she has become more level-headed about it, being able to shake herself out of her moments of infatuation with him. She also has a strong sense of responsibility and duty, which is exemplified in her devotion to the Resistance's cause and her own role in maintaining the organization's stability, as well as when she turned down an offer to spend time with Sonic in favor of returning to her duties in the Resistance.