While the hood of his forest-green cloak obscures his face, the stranger holds in his hands the familiar mask of Doctor Doom. Yup, this scene sets up exactly what you think it does: It tees up Robert Downey Jr. as Doctor Doom.

So yes, Doctor Doom does appear in First Steps. In the mid-credits scene, we jump four years into the future and see Sue Storm and her son Franklin reading together in their home in the Baxter Building.