Avengers: Endgame - 10 Things Marvel Don't Want You To Know

5. Katherine Langford's Cameo

The Spoiler

Despite the cast already being pretty huge and most of the deaths in Infinity Wat happening to keep it smaller scale, 13 Reasons Why and Love, Simon star Katherine Langford has a secret role in Endgame.

She could be playing the MCU's version of Kate Bishop if rumours are to be believed and will go on to young the newly rumoured Young Avengers movie after Endgame.

How Do We Know?

Back in October 2018, TheWrap exclusively confirmed that Langford had joined Endgame in a mystery role. While THR confirmed that "Langford has filmed scenes for the currently untitled Avengers 4... Character details were not available, and Marvel Studios had no comment."

She was only on-set briefly, so it's presumably not an extensive role, but it's great to see her added to the cast. Plus the mystery is a nice thing to speculate on. There had been some suggestion she may be playing a teenage Cassie Lang, but it appears fellow new cast member Emma Fuhrmann will be taking that role.