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    I Can't Believe I Didn't Realize These 29 Celebrities Were Part Of The MCU

    Basically half the cast of Community worked for S.H.I.E.L.D.

    1. Tesla CEO Elon Musk cameoed as himself in Iron Man 2.

    Elon talks with Pepper and Tony at a party in Monaco

    2. Good Will Hunting actor Matt Damon played an Asgardian actor playing Loki in Thor: Ragnarok.

    Matt offers a dramatic apology for Loki's actions as he dies in Thor's arms

    3. "Wrecking Ball" singer Miley Cyrus voiced Mainframe in Guardians of the Galaxy Vol. 2.

    Miley played a decapitated robot head

    4. The Daily Show host Trevor Noah voiced Griot in Black Panther.

    Griot counts down to reboot his systems to prevent Ross from crashing

    5. Community actor Ken Jeong played a security guard in Avengers: Endgame.

    He played a very chill guard who read at his desk

    6. Castle actor Nathan Fillion voiced Monsterous Inmate Inmate in Guardians of the Galaxy.

    the actor who starred in Castle is the voice of a big alien prisoner

    7. A Christmas Story star Peter Billingsley played William Ginter Riva in Iron Man and Spider-Man: Far From Home.

    he played a scientist who worked for Stark Industries

    8. Doctor Who actor Jenna Coleman played Connie in Captain America: The First Avenger.

    The Doctor Who actor's character was on a double date with Bucky and Steve

    9. Pose actor Kate Mara played a US Marshal in Iron Man 2.

    She flashes her badge at Tony and Happy

    10. Game of Thrones actor Natalie Dormer played Private Lorraine in Captain America: The First Avenger.

    Lorraine pulls Steve into a kiss

    11. Talk show host Joan Rivers played herself in Iron Man 3.

    Joan comments on Rhodey's new Iron Patriot suit

    12. Jim Starlin, who created Thanos, had a line in the opening of Avengers: Endgame.

    he asks Joe Russo's character if he cried on his date

    13. The Newsroom actor Olivia Munn played reporter Chess Roberts in Iron Man 2.

    She reported live from the Stark Expo

    14. Westworld actor Luke Hemsworth played an Asgardian actor playing Thor in Thor: Ragnarok.

    15. Mulholland Drive star Justin Theroux played a police officer in Iron Man 2.

    He helps Pepper clear the park and get people to safety

    16. Drake and Josh actor Yvette Nicole Brown shared an elevator with Captain America in Avengers: Endgame.

    She played Helen on Drake and Josh

    17. Harry Potter actor David Bradley played the church keeper in Captain America: The First Avenger.

    He swears no one will ever find the Tesseract

    18. Rage Against the Machine guitarist Tom Morello played a member of the Ten Rings in Iron Man.

    he guarded Tony Stark to keep him from escaping the cave

    19. Lou Ferrigno, who played the Hulk in the '80s CBS show, voiced Hulk in The Incredible Hulk, The Avengers, and Avengers: Age of Ultron.

    Lou's been part of the Hulk franchise for decades

    20. Comedian Garry Shandling played Senator Stern in Iron Man 2 and Captain America: The Winter Soldier.

    Senator Stern demands Tony turn over the Iron Man suit to the US government

    21. The Green Mile actor Harry Dean Stanton played a security guard in The Avengers.

    he asks if Banner is an alient

    22. Director Joe Russo joined Steve Rogers' survivors support group in Avengers: Endgame.

    23. Bridesmaids actor Chris O'Dowd played Richard in Thor: The Dark World.

    Richard asks if Jane's still hung up on another guy

    24. DJ AM cameoed as himself in Iron Man 2.

    DJ AM cheers behind Tony Stark

    25. Community actor Danny Pudi played a com tech in Captain America: The Winter Soldier.

    26. Musician Rob Zombie voiced the Ravager Navigator in Guardians of the Galaxy and Unseen Ravager in Guardians of the Galaxy Vol. 2.

    the rock musician voiced Yondu's ship's AI

    27. Original Saturday Night Live cast member Garrett Morris played a cab driver in Ant-Man.

    he's stunned after seeing Ant-Man in action

    28. YouTuber Anna Akana played a writer in Ant-Man.

    She tells her date that she's working with an Avenger

    29. And Ego briefly shapeshifts into Baywatch star David Hasselhoff in Guardians of the Galaxy 2.

    Quill used to tell people David Hasselhoff was his dad to explain his absence