As with many Marvel Cinematic Universe properties, all episodes of She-Hulk have had a credits scene. Coiro, episode 4’s director, revealed to TVLine that this particular mid-credit sequence came from its actors working well together and wasn’t initially planned. Check out her quote below:
When Wong and Madisynn are riffing with each other…? That didn’t exist in the script. That came purely from the actors’ comedic chemistry and us going, ‘We’ve got to throw some cameras on these two, because they’re so funny.’
Improvisation and last-minute changes are a long-standing tradition in the MCU. Robert Downey Jr. famously improvised some of his dialogue in the first Iron Man movie, including the iconic « I am Iron Man » moment. Similarly, the line « He’s a friend from work » in Thor: Ragnarok was pitched to Chris Hemsworth by a child who was on set that day.