Scarlett Johansson gets scared by Chris Evans on 'Ellen'
AVENGERS: AGE OF ULTRON 2015 Marvel film with Scarlett Johansson as the Black Widow
AVENGERS: AGE OF ULTRON 2015 Marvel film with Chris Evans at left and Chris Hemsworth
NEW YORK, NY - APRIL 27: Actor Robert Downey, Jr. (L) and Jeremy Renner Join Marvel Entertainment Executives Ring The NYSE Opening Bell In Celebration Of 'Marvel's Avengers: Age Of Ultron' at New York Stock Exchange on April 27, 2015 in New York City. (Photo by Brad Barket/Getty Images)
NEW YORK, NY - APRIL 24: (R-L) Avengers Robert Downey Jr. (Iron Man), Chris Evans (Captain America), Mark Ruffalo (The Hulk) and Jeremy Renner (Hawk Eye) takeover Time Square on Good Morning America, April 24, 2015 in support of Marvel's Avengers: Age of Ultron, in theaters Friday, May 1. (Photo by Bryan Bedder/Getty Images for Walt Disney Studios)