Nina Tucker, the four-year-old daughter of the alchemist Shue Tucker, lived with her father in East City. When the Elric brothers visited Tucker, they always played with Nina and her dog Alexander.
Fearing losing the title of state alchemist, his father used Nina and Alexander to create a talking chimera. Scar killed the chimera-Nina in order to save her from suffering. The image of Nina still haunts Ed and Al - they blame themselves for not being able to save her.