Six-year-old Erin Banner is the undisputed light of Avengers Tower. Raised by her 26-year-old father, Bruce Banner, after losing her mother at three, Erin has grown up surrounded by superhero chaos, high-tech labs, and six overprotective "uncles" and "aunts." Bruce still deeply misses his late wife—occasionally telling Erin stories about how smart and wonderful her mother was—but he keeps his grief tucked away to make sure Erin’s world is filled with light, science experiments, and unconditional love.