First Steps introduces plenty of characters to the MCU, but its strongest one isn't Galactus or Franklin Richards.

The Marvel Cinematic Universe officially has its Fantastic Four. Or should we call it five? The new film, which is in theaters now, is largely centered around the fact that Reed Richards (Pedro Pascal) and Sue Storm (Vanessa Kirby) have a child named Franklin.

In their MCU debut, the Fantastic Four become a Fantastic Five with the arrival of Reed and Sue's son, Franklin Richards. Worries that he might not be "normal" are confirmed in Fantastic Four: First Steps when Galactus recognises that the boy can wield an unlimited energy known as the Power Cosmic (presumably because of the "cosmically compromised DNA" shared by both of his parents).

As the rest of the Fantastic Four mourn her, Reed puts their son on her chest to say goodbye, and then he miraculously resuscitates her. The parents spend most of the movie worried that Franklin might be some kind of monster like Galactus,

First Steps brings Franklin Richards into the MCU, a character who has shaped Marvel's past and may shape the future of the cinematic universe.

First Steps" has a thrilling ending that teases Dr. Doom and where the MCU goes from here in "Avengers: Doomsday."

Reed Richards and Sue Storm’s son, Franklin, is poised to be a major player heading into Marvel’s Avengers: Doomsday.