Millie is a lively, outspoken bruiser for I.M.P., known for her cheerful demeanor and unapologetically fierce side. Her innocent appearance hides her brutal skillset, and she's dedicated to her work, showing little sympathy for targets as long as it’s for the client. Fiercely protective of her husband Moxxie, she’s quick to go feral if he’s threatened, though her rage can sometimes leave her vulnerable. Millie also feels occasional insecurity, wanting to be seen as more than just “muscle.”