The 'Captain America vs. Iron Man' 4-panel meme is derived from the intense emotional climax of the 2016 MCU film Captain America: Civil War. While the original scene features a heartbreaking confrontation over Bucky Barnes, the meme community transformed it into a vehicle for trivial or heated debates ranging from food preferences to software choices. Typically, Captain America represents a sentimental or traditionalist viewpoint, while Iron Man responds with logic or personal betrayal. Its enduring popularity stems from the iconic visual contrast between the two heroes and its versatility in depicting any irreconcilable difference between friends or factions.