GLaDOS is the central AI antagonist of Valve's Portal from 2007 and Portal 2 from 2011, voiced by Ellen McLain with heavy electronic processing. Her polite but threatening announcements became some of gaming's most quoted lines, and short clips of her voice spread widely on soundboards, streams and in Discord calls. This particular 'put you on' line is reused because it sounds like a call transfer or hold message delivered by a machine that is clearly in charge, making it perfect for memes about AI assistants and automated systems.