Rosy the Rascal

Anti Amy Rose (also known as "Rosy the Rascal") is the Anti Mobius counterpart to Amy Rose. Rosy wears the same outfit Amy wore when she was younger and carries a hammer similar to Amy's, except it's green and has spikes on it at either end. Mentally unstable; Anti Amy seeks to attack just about anyone who gets close to her, and constantly haunts Scourge the Hedgehog for ignoring her.

Increase in Age
Rosy and Amy both share similar historical scenarios. Like Amy, Anti Amy used a special ring, (it is unknown if it was the Anti-Mobius version of the Ring of Acorns or not) to make herself older so that Scourge wouldn't ignore her attacks. However, the jolt of energy from the magic ring made Rosy go insane. (StH: #79, #193)

Sought out by Sonic and Amy
Rosy lurked around in Moebius' Castle Acorn, waiting for Scourge to come back to her. Sonic the Hedgehog and Amy, with the help of Buns Rabbot, attempted to recruit her to help defeat Scourge and his Suppression Squad, who had recently invaded Freedom HQ in Mobius Prime. When asked for her help, Anti Amy explains that Scourge would often ignore her attacks, thus the reason she used the 'special ring' to make herself older. However it was noted by Sonic that there were side effects to this, as Rosy doesn't look or act older. She revealed that the transformation went wrong, causing her to become psychologically insane, and thus began attacking the trio with her hammer. (StH: #193)

During the battle, after Sonic tried to reason with her that he's a good guy, Rosy responded "You're a Sonic! My Scourgey is a Sonic! I want to smash Sonics!". Amy retorted, stating that they were like sisters being couterparts, but Rosy wanted to defeat her nonetheless. As the four engaged in battle, Buns used her riot foam in an attempt to prevent her from moving, though Rosy simply destroyed the foam with her hammer. After this, Amy went on to keep Rosy distracted so that Buns and Sonic could locate the Globe Posts that had been stolen from Anti Robotnik before. Buns was concerned about leaving Amy to fight for herself, though Sonic informed her she could take care of herself. Buns then protected Sonic while he went through the Globe Posts to see what was going on in Mobius. (StH: #194)

The battle was soon lost however, as Rosy broke Amy's hammer. Just as Rosy noticed the Globe Posts and was about to smash them, Buns got in the way to give Amy time to get Sonic back. However, due to the betrayal of the Suppression Squad, Scourge was sent back to his world along with Sonic before shutting down the Globe and Star Posts. Just as Scourge got angry at his team's betrayal, the group realized Rosy had defeated Buns', trashing the Omega Care Unit, leaving her powerless. Scourge looked on in fear as Rosy prepared to gain her revenge. (StH: #194)

Personality
She is the opposite of Amy as instead of seeing Scourge as a love interest, as Amy does with Sonic, she sees him as an enemy. Dr. Kintobor pointed out, she "HATES" Scourge. Because of her transformation, Rosy has gone insane and "breaks" things, mainly people it appears. She used to like Scourge but now stalks him after he was mean and ignored her. She also appears to enjoy singing little songs about what she'll do to people. (StH: #193, #194)