Galactus is played in Fantastic Four: First Steps by British actor Ralph Ineson. The star has come a long way since playing David Brent's obnoxious friend Chris Finch in The Office (UK), with acclaimed turns in Game of Thrones, Chernobyl and Robert Eggers' The Witch bringing him to Hollywood's attention.

Galactus is one of the biggest baddies in the entire canon of Marvel Comics, but Fantastic Four: First Steps makes an odd creative choice with the character.

Galactus is aided by his shiny, chrome herald, the Silver Surfer. Previously seen onscreen in the 2007 movie, played by Doug Jones and voiced by Laurence Fishburne, is the male version of the character, Norrin Radd. Now, Ozark star Garner is playing the first-ever live-action version of Shalla-Bal.