Rouge the Bat

Rouge the Bat is a character from the Sonic the Hedgehog series. She is a treasure thief/treasure hunter, taking particular interest in jewels, an agent of GUN, and the de-facto leader of Team Dark, helmed by Shadow the Hedgehog and E-123 Omega.

Worlds Collide
After Shadow's disappearance, she tried to locate Shadow, also ordering Omega to stand guard near the portal. She then infiltrated the Wily Egg, and briefly conversed with one of the prisoners, Dr. Light, attempting to ask for information regarding Shadow. (Mega Man #26)

She also ended up caught by Eggman's forces, although not before sabotaging portions of their combined machine. Cornered by Metal Sonic and Bass, she then released the Chaos Devil, which consumed both her and Metal Sonic before Eggman ordered for it to spit them out. She then was roboticized into Rouge Woman, with her special ability being Black Wave. (Sonic Universe #53)

Rouge Woman then led an entire army of Robot Masters (all time-cloned due to the effects of the Skull Egg Zone, with all Robot Masters from the games save for the first Light Robot Masters Guts Man, Cut Man, Time Man, Oil Man, Bomb Man, Fire Man, Elec Man, and Ice Man). Rouge Woman, during the resulting battle, also encountered Shadow (who warned her that she shouldn't have encountered him), although she noted that she was "now among classier company" when Shade Man managed to ambush Shadow. Rouge Woman was eventually reverted by Mega Man upon ambushing her during the battle, also taking her Special Weapon in the process. (Sonic the Hedgehog #250)

She is eventually reunited with Dr. Light (who ended up saved by Shadow via Chaos Control after Dr. Eggman tried to kill him), and informs him of the situation at hand. During the ensuing confrontation between her, Light, and the time-cloned Robot Masters, she also encountered Jewel Man, and had a humorous confrontation with him. (Mega Man #27)