Cast
Miles Teller as Reed Richards / Mister Fantastic:Richards has been exploring the universe in his garage after school. He gains the ability to stretch his body into different forms and lengths. Teller said of the role, "When I read the script, I didn't feel like I was reading this larger-than-life, incredible superhero tale. These are all very human people that end up having to become, I guess, what is known as the Fantastic Four. So for me it was just a really good story and gives me an opportunity to play something different from my own skin." Owen Judge portrays Reed as a child while Fernando Rivera portrays Reed in disguise.
Michael B. Jordan as Johnny Storm / Human Torch: A troublemaker, thrill-seeker and the younger brother of adopted sister Sue Storm, he has the ability to shoot fireballs and fly. Jordan said of the cast, "We're more or less a bunch of kids that had an accident and we have disabilities now that we have to cope with, and try to find a life afterwards – try to be as normal as we can." Jordan previously worked with Trank on 2012's Chronicle, and according to Trank, Jordan's character in Chronicle shares characteristics with Johnny Storm. Trank has described Storm as "smart, hilarious and charismatic."
Kate Mara as Sue Storm / Invisible Woman:Brilliant, independent, and sarcastic, Storm has the ability to become invisible and generate force-fields. Mara has said that she intended to focus on making her character "as real as possible". Trank described Storm as "smart, dignified and [with] integrity."
Jamie Bell as Ben Grimm / The Thing:Warm, sensitive, a loyal and protective friend, Grimm's stone body gives him super-strength and makes him "indestructible". Trank said Grimm grew up an alienated child in a "tough" neighborhood. Trank also said that Bell has "qualities" of warmth and strength which people would want to see from Grimm. Bell has said that Grimm is the "heart of the group [Fantastic Four]". In preparation for the motion-capture performance, Bell approached actor Andy Serkis for advice. During filming, he wore a tracking suit and stilts to match the height and eye-line of The Thing. Evan Hannemann portrays Grimm as a child.
Toby Kebbell as Victor Von Doom / Dr. Doom:A computer technician and computer scientist who is mentored by Dr. Franklin Storm. Doom finds a new father of sorts in Storm. Angry, vengeful, and bright, Doom was changed in the Negative Zone, as were the other characters. Kebbell said that he concentrated the most on the voice of the character, adding, "on the animated series, they never got his voice what I imagined it to be when I read the comics as a little boy. What I spent the majority of my time doing was not just being a fan, but being a bit of pedant and making sure I got exactly what I always wanted to see." Kinberg said that Doom is as central to the film as the "titular" heroes. He added that Doom has "aspirations and struggles that are a little bit more classically tragic than the other characters" and that the film would show how he becomes a villain. Dr. Doom's full name in this film was originally going to be "Victor Domashev", but after backlash by fans, it was changed back to "Victor Von Doom" during reshoots, to match his name in the Marvel Comics universe.
Reg E. Cathey as Dr. Franklin Storm:The biological father of Johnny and adoptive father to Sue. Cathey described Franklin as a "brilliant scientist who has achieved much more than he thought he would" and that Franklin's main drive in life is to help "brilliant" kids who may have been dropped through the cracks or who were misunderstood.
Tim Blake Nelson as Dr. Harvey Allen:A scientist who works for the government and takes part in training the members of the team to hone their abilities. Nelson said that Allen is "responsible for what the creative people do that he has to rein them in and discipline them."
Tim Heidecker as Mr. Richards:Reed's stepfather.
Dan Castellaneta as Mr. Kenny:Reed's teacher.
Wayne Pere as Science Fair Judge.
Chet Hanks as Jimmy Grimm:Ben's older brother.
Mary-Pat Green as Elsie Grimm:Ben and Jimmy's mother and the presumed owner of Grimm Salvage.