For some time, Amy has been one of Sonic the Hedgehog's closest friends and most trusted allies, as well as his biggest admirer due to her massive crush on him. She would often aid him in his battles against the forces of the Eggman Empire and its emperor, Dr. Eggman. (StH: #1)
In the recent past, after Sonic got captured by Dr. Eggman, who was able to seize control over most of the world in doing so, Amy came to serve as second-in-command of a resistance group that Knuckles the Echidna commandeered (although it was Amy who kept the group organized). Later on, after being reunited with Sonic, she, alongside the rest of the Resistance, defeated Dr. Eggman, thus ending the Eggman Empire's reign over the world. (StH: #1, #2)
After the war, Amy and the Resistance set out to clean up from the war. However, with the Eggman Empire's Badniks being everywhere and randomly attacking anyone they came across, Amy and the Resistance had to work from a centralized, organized position that would allow them to combat the Badniks more effectively. (StH: #2)
Eventually, Amy heard that Sonic and Tails had saved a town from some Badniks. Hoping to re-recruit Sonic for the Resistance's cause, Amy caught up to Sonic at another town under siege. There, she helped him defeat the Super Badnik, Death Crab. Sonic was then about to head to the next town when Amy asked him to rejoin the Resistance and explained why they needed him. However, Sonic declined Amy's offer because he had figured out something was making the world's Badniks more cohesive, which Amy saw as further proof to join the Resistance, whereas he believed that it was better to keep moving and get to the bottom of the situation. Soon, Amy and Sonic were alerted of a Badnik army mostly consisting of Egg Pawns and Egg Walkers invading the town from the west. While Sonic cleared out most of the first wave, Amy went to the town where she rallied the town's militia, who was able to clear out the remaining Badniks that slipped past Sonic, while organizing the evacuation efforts. Amy then proceeded to thin out the remaining Badnik horde with Sonic, still requesting for him to reconsider joining. After she and Sonic managed to destroy the source of the Badniks in the form of a Blowfish Transporter, Amy came to terms with Sonic not wanting to join as she did not wish to change what she loved about him. Following this, she requested for Sonic to help Knuckles the Echidna in a nearby town as she had not heard from him in a while, which Sonic accepted. (StH: #2)
The Battle for Angel Island
Meeting with Sonic, Tails, and Knuckles in Resistance HQ, Amy learned from Sonic that Neo Metal Sonic was the ringleader behind the recent organized Badnik attacks. As it turned out, the robot had taken over as head of the Eggman Empire and was currently trying to conquer the world for Dr. Eggman with an unknown plan. In an effort to undermine Neo Metal Sonic's scheme, Amy and Knuckles decided to help Sonic and Tails search for any old plans that could tell them what Neo Metal Sonic was up to. (StH: #7)
Amy is a pink hedgehog with patches of peach skin on her muzzle and arms. Her outfit primarily consists of a red, sleeveless dress with white trim, and a pair of long red boots with a white stripe down the centre and white cuffs. Like most of the "animal" inhabitants of Sonic's world, she always wears gloves, though with the cuffs covered by a gold bracelet on each wrist. The spines on her head are typically worn down like that of ordinary hair, and is kept in place by a red hair hand, with the exception bangs hanging from between her ears.
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 the Hedgehog, 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.
Amy has high physical strength, enough to wield her large Piko Hammer with ease and swing it around with enough force to send recipients flying through midair. She is also highly adept and knowledgeable in the usage of her Piko Piko Hammer: with it, she can make offensive spins (similar to a spinning top) and redirect midair projectiles with a single whack.
Amy's trademark weapon is the Piko Hammer, a large and powerful hammer capable of dealing massive damage with no excessive efforts. She mainly uses it as a melee weapon in combat, although she is also able to use it for devastating attacks when combining it with her natural gracefulness.
Physical abilities aside, Amy is a skilled strategist and organizer. It was thanks to these skills that the Resistance became the orderly organization it is. In little time she once also organized an ambush with an unfamiliar town's militia that successfully vanquished a Badnik horde, all while giving the civilians accurate instructions on how to evacuate the residents.
Sonic the Hedgehog
Amy has had a long-standing crush on none other than Sonic the Hedgehog. As such, she is always happy to see him and would follow him everywhere if he let her. Even in the heat of battle, she cannot help but flirt with him. However, Sonic does not reciprocate her advances or affections, much to her eternal frustration. She also tends to get annoyed to Sonic's cheeky attitude and independent mindset, especially when it comes to his refusal to work with her and the Resistance.
Despite her constant turn-downs however, Amy keeps a tight friendship with Sonic. She also admires Sonic for his free-spirited and benevolent choice of lifestyle, and has admitted that, for all his shortcomings, she loves him just the way he is, and would not want to change him in any way. The two of them are also capable of playful banter in both tense and relaxed situations.
- Head writer Ian Flynn has revealed on Twitter that Amy's measurements are the same as those of her game counterpart.