Theory: Black Widow post credits scene
Channel: Solid shows, feels films & great games
Date: 26/06/2021

Spoilers for the MCU leading up to Black Widow

MCU Thoughts playlist:
https://www.youtube.com/watch?v=1zaediHdV28&list=PLODZjukKGj2SrMT9CESuImcehLCL5MB7z