Warning: Contains spoilers for What If…? episode 9.
Marvel’s What If…? introduced a version of Peggy Carter who became a Super-Soldier instead of Steve Rogers, and as Captain Carter, she might be the strongest Super-Soldier yet. Captain Carter might not have had as much to do as either the original Captain America or Sam Wilson, but what little she has done gives credence to the idea that she stands at the top.
The season one finale of What If…? opens with Captain Carter going through the beginning of her version of Captain America: The Winter Soldier. Just like in that movie, Captain Carter and Black Widow are tasked with rescuing S.H.I.E.L.D.