GLaDOS is the artificial intelligence who oversees Aperture Science in Valve's Portal games, first introduced in Portal in 2007, and her dry, robotic voice became one of gaming's most recognisable sounds. Short lines like this enemy overheat warning circulate widely on gaming soundboards and in edited videos because they are instantly recognisable even out of context. Creators keep using them for robot, AI and system-failure jokes, where her calm delivery makes a malfunction feel funnier than a panicked alarm would.