Adorable 'Avengers' Trailer Uses an All-Kids Cast

If you've seen the trailers for "Avengers: Age of Ultron" lately, you already know that they're action-packed and pretty serious.

So, why not lighten them up a bit?

That's what three young Vine stars did with this adorable video. Arwen, Leia and Neo dubbed over the "Avengers: Age of Ultron" trailer (presumably with the assistance of an adult), providing voices and even sound effects to go with the action on screen.

Let's just say that Ultron is a little less intimidating when it's a little kid providing the voice instead of James Spader. And the overhead passing of a fighter jet packs a little less bone-rattling punch when it's punctuated only by a voiced "whoosh."

Check out the cute video below: