The Boys Season 4 kicks off with a three-episode premiere introducing Susan Heyward's Sister Sage, the smartest person in the world and a major new character in the series. This mental powerhouse poses a unique challenge not just to Homelander, but to the writers themselves. Referred to as Homelander's own Lex Luthor, Sister Sage brings a new level of danger and complexity to the show. With her vulnerability and intelligence, Heyward's portrayal brings depth to this character, showcasing a compelling mix of cold calculation and underlying pain. As Season 4 unfolds, viewers will see Homelander face his own demons while navigating a world where heroes are often the true antagonists. The dynamic between Homelander and Sister Sage promises to be a central focus as the season progresses, revealing more about the complex inner workings of both characters.