Liberty Prime is a giant pre-war American combat robot from Fallout 3, released in 2008, later rebuilt by the Brotherhood of Steel and featured again in Fallout 4 in 2015. Built to fight communism, it became famous for loud, slogan-like anti-communist speeches delivered in a booming robotic voice while marching into battle. Clips spread through Fallout gameplay videos, online edits and meme soundboards, where the robot's absolute sincerity makes it perfect for satire. It remains popular because the character is instantly recognisable to Fallout fans and instantly funny to everyone else.