Reed Richards is the leader of the Fantastic Four, but there's more to Marvel's pliable hero - here's everything you need to know before seeing "First Steps."

Credit: Marvel Studios 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).

The upcoming film stars Pedro Pascal as Reed Richards/Mr. Fantastic, Vanessa Kirby as Sue Storm/Invisible Woman, Ebon Moss-Bachrach as Ben Grimm/The Thing and Joseph Quinn as Johnny Storm/Human Torch.

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

The Fantastic Four: First Steps director Matt Shakman has revealed that a major change regarding Franklin Richards was made from the original script.

Retro charm and familial warmth carry Marvel’s first family, despite a plot that's stretched thinner than Mr. Fantastic’s limbs.View on euronews

The Marvel Cinematic Universe's Mister Fantastic, Reed Richards, is not the new leader of the Avengers, according to actor Pedro Pascal, who played on

RDJ's Tony Stark was known for his quick wit and even quicker mouth, with Iron Man having some of the funniest MCU lines ever. It sounds like while Reed Richards is wildly intelligent, he's more reserved personality. Luckily fans won't have to wait too much longer, as First Steps is just days away from its release. Bring on the Fantastic Four.

So does RDJ’s Doctor Doom pop up in the new Fantastic Four movie? Well, sort of.