According to Variety, there are three possible candidates to fill that final 2028 slot – and one of them is reportedly a follow-up to the first Fantastic Four film, i.e. First Steps, that Marvel Studios has produced.

First Steps has given fans their first look at an iconic Marvel villain, in a surprising place. Which Fantastic Four villain is revealed in the video? The latest promo video for The Fantastic Four: First Steps gives fans their first look at Giganto,

First Steps releasing in cinemas, fans have their first look at classic villain Giganto — via a commercial for Little Caesars pizza. The 30-second advert reveals Giganto, a giant green monster with an enormous mouth seen bursting through the street in a nod to its original appearance,