The Boys Season 4 Episode 6 unveils the revelation that Joe Kessler, a character intertwined with Billy Butcher, is actually a figment of Butcher's imagination, embodying his inner conflict and darker nature. This twist, confirmed in various episodes, showcases Butcher's struggle with his humanity and monstrous tendencies. Kessler serves as a manifestation of Butcher's duality alongside Becca, representing his compassion. The narrative explores Butcher's internal battle spurred by Compound V's effects and his quest for revenge against Homelander. As the season progresses, Butcher's interactions with Kessler and Becca reveal a complex interplay of morality and darkness within him.