Metal Amy is based upon her namesake, Amy Rose. She was designed by Dr. Eggman, and was placed as part of Team Metal, alongside Metal Sonic and Metal Tails.
Metal Amy came as a NPC on January 1, 2013 as a New Year present for the players. Metal Amy gives out one mission: the player will have to get a chip for Metal Amy so she will be fully operational to help against Fuse. Metal Amy has a cyborg brain, so she can think like a normal human, but still operates like a normal robot, which makes the chip all the more important for her.
It is unknown if Metal Amy holds the same crush on Metal Sonic as her organic namesake does on Metal Sonic's organic namesake.
She seems the most willing to assist the players, though this may because she dislikes Fuse and because he sent his minions to steal her chip.
Of all her Metal companions, Metal Amy is most affected by her creator's passing.
This may be due to the fact that she is able to process him in a different manner from the others.
Metal Amy shows great care for Metal Cream, looking out for her like an older sister would.