MCU Phase 4: Every Single Character Confirmed (So Far)

14. Dr. Abraham Erskine (Stanley Tucci) - What If?

We already know that one of the What If...? storylines deals with Captain America - or more pertinently a different Captain entirely - and that we will see a story set in the 1940s in which someone else gets the super soldier treatment.

That would always mean that Stanley Tucci's Dr Abraham Erskine would be involved as the father of the whole programme. Presumably, this time around, he witnesses something different in his possible candidates.