If you thought the rivalry between Steve Rogers and Tony Stark was bad, just imagine how much worse it would have been if they had to share chores, backseats, toys and living space. The grudge match between Avengers is nothing compared to the grudge match between... siblings. This new spot from Walmart shows off some "Captain America: Civil War" accessories -- including helmets, a shield and repulsor ray -- and puts them in epic motion as this brother and sister prepare to clash.

"Captain America: Civil War" is in theaters now.