The Fantastic Four: First Steps debuted the most powerful character in the MCU with Franklin Richards, whose powers are almost second to none in Marvel Comics. The newborn was central to The Fantastic Four: First Steps ' plot, which homes in on the family dynamic of the titular team, and he is likely to play a huge role in future MCU installments.

First Steps reveals Galactus' intention to make Franklin Richards his heir, while hinting at Doctor Doom's potential plan to save the Multiverse.