Aw, the Avengers really are a great bunch, aren’t they? On The Tonight Show Starring Jimmy Fallon, the cast of Avengers: Infinity War, explain the origin of the Marvel Cinematic Universe to the theme song from The Brady Bunch.

Of course, Robert Downey Jr. begins the song, “Here’s the story of a playboy genius who was gearing up to form some sort of crew.” He’s then joined by Scarlett Johansson, Chris Hemsworth, and one who “fought in World War II,” Chris Evans.

Next up is Chris Pratt, claiming Star-Lord as “the greatest to ever walk the Earth, by far.” Anthony Mackie and Benedict Cumberbatch join in, while Chadwick Boseman sings “Wakanda Forever.”

This is how the Avengers became “the Marvel Bunch.” Watch below… best thing ever!