History
Becky Barnes was the daughter of Captain America (Isaiah Bradley). His job as Captain America left him busy and didn't have time to raise her so she was adopted by Bucky Barnes. In the modern age, Isaiah ran for President of the United States and won two terms. During the campaign, though, Bucky was killed and Becky was driven mad. She obtained a Infinihedron and used it to travel back in time and attempt to kill her father on his Presidential campaign. However, she accidentally ended up on Prime Marvel Universe and her bomb killed Lester Paley (an event which was undone later). She went to what she believed was Isaiah's apartment and was killed by Rebecca Quan.[2]