Rouge the Bat (or Rouge) is an adversary of Sonic the Hedgehog (in most cases) and a friend of Shadow the Hedgehog. She occasionally allies herself with Sonic or Dr. Eggman, and is hinted to have a crush on Knuckles the Echidna. She is also an expert when it comes to treasure hunting. She once tried to steal the Master Emerald, but Knuckles defeated her. Her début was in Sonic Adventure 2. Her latest appearance is in Sonic Dash. With Knuckles having his fists as his powerful attack, Rouge's powerful attacks come from her legs. She can also glide in the air. She also loves to shop for jewels, as well as steal some.