'Avengers: Infinity War' Cast Sings Marvel-Themed Version of 'Brady Bunch' Theme Song: Watch

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Avengers: Infinity War cast sings "The Marvel Bunch"

That's the way they became the Marvel Bunch.

For those who don't consider themselves well-informed when it comes to the world of Marvel, keeping up with the superheroes and their backstories might get a little tricky. Thankfully, The Tonight Show Starring Jimmy Fallon aired a hilarious remake of the "Brady Bunch" theme song Tuesday (Apr. 24) to help bring novices up to par, just in time for the release of Avengers: Infinity War.

Aptly titled "The Marvel Bunch," the new theme song opens with Robert Downey Jr. briefing the tale of his "boy genius" character, Iron Man, and the crew he brought together: a "former Russian spy," "god of thunder" and World War II veteran, explained by their actor counterparts Scarlett Johansson, Chris Hemsworth and Chris Evans, respectively.

Chris Pratt, Benedict Cumberbatch, Chadwick Broseman and Anthony Mackie also give a brief rundown of their characters to the tune of the familiar theme song, which first graced televisions in 1969.

Finally, the unmistakable shot is shown of multiple screens focusing on each face of the "bunch" as they serenade the final line: "that's the way we became the Marvel Bunch."

Avengers: Infinity War hits theaters Friday (Apr. 27). Watch the parody below: