'The Avengers Sing Christmas Carols' Will Bring You Marvelous Cheer

It's always fun when the Avengers assemble, right? Well, not always but this time they've come to spread some holiday cheer with a little guest spot from Groot. It's short and adorable and cheery so give it a watch or we'll tell Ultron.

The video is courtesy of James Covenant's YouTube.

-Larissa Mrykalo