The Avengers succeeded in taking down Ultron earlier this summer, but a new "Wizard of Oz" and "Avengers: Age of Ultron" mash-up shows the battle to defeat the Tin Man may prove even tougher.

The fan-made video digitally substitutes characters from the "Wizard of Oz" into the "Avengers: Age of Ultron" trailer creating a world where Dorothy, The Scarecrow and The Cowardly Lion have to fight the Tin Man. The heart-less villain also teams up with the Wicked Witch and her flying monkey.

As Ultron becomes the Tin Man, Dorothy takes off on Black Widow's bike; the Scarecrow grabs Captain America's shield; and the Cowardly Lion and his luscious mane take the place of Thor. Scarlet Witch becomes the Wicked Witch with a green-skin dye job and Quicksilver straps on a pair of wings to become a flying monkey.

The Avengers have also made mash-up appearances with characters from the DC universe and Transformers in fan-made videos this year.

So what happens when you mix the "Wizard of Oz" and the Avengers? Check out the trailer for "Wizard of Oz: Age of Tin Man" below to find out.