But despite intense overlap between that show and Avengers: Endgame, there were no references to The Doctor, their adventures, or even their existence. Which is funny, considering Karen Gillan, one of the Eleventh Doctor’s very own companions, could have fought to include that cultural touchstone in the current blockbuster’s narrative. Sadly, she didn’t, and it’s a decision she regrets, as seen in her recent remarks below:
Article source: https://www.cinemablend.com/news/2471703/karen-gillan-regrets-not-trying-to-work-a-doctor-who-reference-into-endgame