The director's daughter will appear in the film and play a key role in the plot of "Avengers 4"

Joe Russo, the director of "Avengers 3" and "Avengers 4", has made a cameo appearance in Marvel movies, although only as a passerby, but his daughter is about to play a key plot role in "Avengers 4: Endgame".

"This is my daughter Ava, who will play a mysterious and key plot role in the movie." Joe Russo told reporters at the premiere of "Captain Marvel", "We can't reveal any more details at this time."

Joe Russo and his daughter Ava

In this film, everyone will wear an enhanced version of Ant-Man's quantum uniform to enter the quantum realm and travel through time and space. Earlier, Ant-Man Cassie has been confirmed to appear in this film as a member of the "Young Avengers" who will appear in the parallel universe in the future, so Ava may play one of her teammates, or a member of the "New Avengers". After all, this is the last time the original Avengers gather together.

Emma Fuhrmann announced via Twitter that she will play the adult version of Cathy

"Avengers 4: End Game" will be released in North America on April 26.