While Robert Downey Jr.'s Doctor Doom is barely shown in the Avengers movie fan trailer, the villain looms over the footage. Characters like Doctor Strange, Mister Fantastic, and Magneto talk about how much of a threat Doctor Doom poses. Scenes of destruction across the multiverse help display how thrilling the upcoming MCU movie could be.

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).