History
In this reality, when Rogue touched Ms. Marvel to absorb her powers, Carol grabbed onto her arm and didn't let go. In addition to Carol's Kree DNA glitching up Rogue's powers, the prolongued contact caused each to end up absorbing the powers, memories and personality of the other.
This world was briefly visited by the Carol Danvers of the Prime Marvel Universe using the Reality Stone before being pulled into Earth-70875.[1]