The Rogue Rouge is a perfect doppelganger of her organic template. As so, she is identical to her in both anatomy and attire.
The Rogue Rouge was first seen stealing the Moon Emerald, and later, the Master Emerald, with everyone assuming the real Rouge to be the thief. This lead to Rouge being hunted by Knuckles the Echidna and others, who accused her of stealing those gems.
The Rogue Rouge was later sent out by Dr. Eggman to steal a Chaos Emerald for him from the Smithsonian Institute, where Sonic the Hedgehog, Knuckles, and her organic template were. Rouge eventually found out about the existence of her robot copy and would confront her alongside Sonic, Knuckles, and some GUN soldiers. The Rogue Rouge ultimately ended up facing Rouge one-on-one, but was defeated when Rouge ripped off her head.