The movie "Fantastic Four: First Steps" has two post-credit scenes. One scene appears midway through the credits and is important as it sets up future MCU storylines, showing a significant event related to Doctor Doom and the Fantastic Four's son Franklin Richards. The second scene appears after all the credits have finished and is more of a fun, lighthearted moment featuring an in-universe Fantastic Four cartoon episode. Fans are encouraged to watch both for a complete experience, as the first is crucial to the story continuation while the second is a playful bonus.