X-Force, Mutant Genesis: Domino
While the real Domino was captured and held by the evil Mr. Tolliver, an impostor was sent to infiltrate the ranks of the newly formed mutant strike team, X-Force. The impostor nearly managed to fool everyone, until she was cut down by Domino's arch enemy, Deadpool. Believing Domino finished, Deadpool went on to hunt Tolliver. As they battled, Domino managed to escape. Though even her own team members known very little of her, she is currently a member of X-Force.