Marvel’s ‘Fantastic Four’ introduces powerful new characters to the MCU, and ends with tease for ‘Avengers: Doomsday’—here’s the ending and post-credits scene, explained.

First Steps kicks off MCU Phase 6 by introducing Galactus, the cosmic World-Devourer. But Galactus isn’t merely a villain with an insatiable hunger; his consumption of worlds is tied to the Marvel Universe’s multiversal cycle of destruction and rebirth,