Rogue

Rogue is a mutant who can absorb the memories and abilities of others through physical contact. She is a member of the X-Men and former member of the Brotherhood of Mutants.

With the X-Men
Rogue joined the X-Men at an unknown point, and began feeling a familial connection with Wolverine, presumably due to them both sharing confusion regarding their memories. She was always upset when Wolverine left to be on his own, believing that the Xavier Institute was never like home when he was gone. She had similar feelings shortly before the explosion at the mansion, pretending not to care, but revealing how she felt when pressed by Wolverine. Shortly afterward, as Wolverine prepared to leave, a massive explosion destroyed the Xavier Institute and left Professor X and Jean Grey missing. Rogue left the X-Men shortly afterward.

On Her Own
Rogue was on her own for about a year, searching for information as public fear of mutants became worse. She was present when the anti-mutant Senator Kelly unveiled the Sentinel Prowler, a mutant-hunting robot. Realizing that she was in danger, she prepared to leave but was detected by the Prowler. The machine appeared to attack the crowd, pursuing Rogue into an alley. She was rescued by the timely intervention of her former teammate Angel, who was rescued in turn by Beast. Wolverine showed up and destroyed the Prowler, after which he revealed that he was reforming the X-Men and invited Rogue to rejoin. She refused, saying that Wolverine was never around and no one could follow a leader who was always gone.

Infiltrating the Brotherhood
After leaving, Rogue encountered Toad in an alley, who attempted to mug her. Rogue grabbed him by his tongue and absorbed his powers and memories, finding out that the he and the Brotherhood were part of something much larger. She was encountered by the other members of the Brotherhood. Most of the members were irritated at Rogue, but Domino decided to speak with Rogue alone and tried to recruit her. Rogue refused saying that they were criminals who only made life worse for other mutants. Domino argued that they were only defending themselves and other mutants and said that they would never abandon their own members unlike the X-Men. Rogue was not convinced, but knew that she needed to get close to the Brotherhood to learn more about what they were planning. She knew that in order to do so, however, she would need to appear to betray the X-Men to earn the trust of the Brotherhood.