The Kick-Ass co-creator praised Chronicle director Josh Trank's reboot of the Marvel Comics property for 20th Century Fox.
"From what I've seen and from talking to [Trank] - he and I have had dinner a couple of times and we talk quite regularly as well - he's contemporarising it," Millar told SciFiNow. "I think he's just making it work for the screen - he's a great storyteller.
"Chronicle, if you think about it, was similar to Fantastic Four in that it was a bunch of people who were transformed into something more than human - that turned out almost his calling card to come and do something like Fantastic Four.
"What I wasn't expecting actually was just how funny and likeable he could make this as well as getting the more awesome moments on screen - I use awesome in the traditional British sense and not the California sense awesome, you know? The Ridley Scott moments, and the Fantastic Four really are jaw-dropping in the same way you feel when you saw Alien for the first time.
"There's some moments in this - not to be specific - that are actually gonna be phenomenal on screen and stuff you haven't seen in a superhero movie before."
Millar has been hired to work as a creative consultant on 20th Century Fox's forthcoming superhero films. The studio owns the movie rights to X-Men and Fantastic Four.
Fantastic Four is scheduled for release on March 6, 2015.