Chris Evans and Elizabeth Olsen dropped by The Ellen DeGeneres Show (the episode airs Monday) to promote their new Marvel film, Captain America: Civil War, and ended up getting frightened half to death by Iron Man.

Their segment begins with Ellen bringing up Evans love of pranks by showing the time he crept up on his Avengers: Age of Ultron co-star Scarlett Johansson in 2005 and, more recently, hid in a dressing room bathroom and surprised Olsen.

Ellen then lulled Evans and Olsen into a false sense of security by having Evans discuss the dog he rescued from a shelter. While he's doing that, one of Ellen's staffers, dressed in an Iron Man costume, leaps out.

Watch the hilarious jump-scare in the video below.

In Captain America: Civil War, governments around the world hold Earth's Mightiest Heroes accountable for their actions, despite the amount of lives they've saved. Heroes divide as Captain America (Chris Evans) and Iron Man (Robert Downey Jr.) butt heads, and fists, while fighting for what they believe in! Catch a glimpse of the action in front of and behind the camera above.

Captain America: Civil War will arrive in theaters on May 6, 2016.