The episode explores Galactus, a cosmic entity from Marvel Comics, highlighting his potential as the first major antagonist for the Fantastic Four in the Marvel Cinematic Universe (MCU). It recounts Galactus's origin as Galan from a dying universe, his transformation into a being of immense power fueled by planetary consumption, and his array of abilities derived from the Power Cosmic. The article also discusses his Heralds, including the Silver Surfer, who seek out worlds for him to devour. It summarizes the Fantastic Four's past encounters with Galactus and considers how his introduction could raise the stakes in the MCU. Ultimately, the article posits Galactus as a unique, universe-level threat that challenges the heroes philosophically and has the power to redefine cosmic storytelling.