 Following Euphemia's death, Nina becomes emotionally and mentally unstable.In a misguided attempt to avenge Euphemia, she arms the Ashford's "Ganymede" Knightmare Frame with a prototype nuclear bomb and intends to detonate it to kill Zero, but it fails to explode and she is arrested.In the second season, Nina becomes an antagonist and is recruited by Second Prince Schneizel as chief of his "In Vogue" research team headquartered in Dallas, Texas.