The Call of Duty: Black Ops II character's real name is Erin Baker. It's highly likely that her nickname 'Battery' derives from her having cybernetic arms, which makes her a cyborg.
Valeria Garza, also known as El Sin Nombre (Spanish: The Nameless), is a supporting antagonist of the 2024 video game Call of Duty: Modern Warfare II, the second installment in the rebooted Modern Warfare sub-series.