First Step’s post-credit scene leaves fans buzzing with new Doctor Doom theories, hinting at what could be next for Marvel’s iconic villain

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.

Thanks to the Thunderbolts* post-credits scene, we'd all assumed we knew how The Fantastic Four: First Steps was going to end; with Marvel's First Family having hopped on a ship and travelling, somehow, to Earth-616 on the Sacred Timeline. You know, the universe in which the Avengers exist...