"Nazi zombies" refer to a fictional concept often found in video games, movies, and other media, where undead creatures are depicted as former soldiers of the Nazi regime. These characters typically arise from supernatural events, combining elements of horror and war. The portrayal often emphasizes their menacing appearance and relentless pursuit of living characters. This trope gained popularity in various entertainment forms, particularly in the Call of Duty video game series, where players face waves of these undead foes. The concept plays on the historical context of World War II while adding a fantastical twist, merging horror with action gameplay.