This article contains spoilers for “Fantastic Four: First Steps,” now playing in theaters. “Fantastic Four: First Steps” marks the official entry of Marvel’s First Family in the MCU, and there are plenty of references and Easter eggs from the comic books in the new movie.

Sue Storm actor Vanessa Kirby says Robert Downey, Jr. is doing "amazing work" as Doctor Doom and as the behind-the-scenes leader of the cast

First Steps introduces the iconic team in a retrofuturistic setting, teasing Doctor Doom's arrival in the MCU. A post-credits scene reveals Doom's interest in Franklin Richards, a powerful child. Robert Downey Jr.