She plays Wanda Maximoff/Scarlet Witch in the 2014 Marvel action film Captain America: The Winter Soldier, the 2015 film Avengers: Age of Ultron, the 2016 film Captain America: Civil War, the 2018 film Avengers: Infinity War and the upcoming 2019 film Avengers 4.
- Olsen was originally considered for the role of Sharon Carter in Captain America: The Winter Soldier, but at the end, Emily VanCamp was cast instead. However, Olsen ended up portraying Scarlet Witch in The Winter Soldier and many subsequent Marvel Cinematic Universe's installments.
- Olsen was uncredited for her appearance in the post-credit scene of Captain America: The Winter Soldier.
- She was considered for the role of Rey in Star Wars: The Force Awakens along with Jennifer Lawrence and Shailene Woodley.