GLaDOS being already defeated in Portal 2, RaDOS is found. Still very rusty, but works, mostly. In Portal 3, this scene will be found. RaDOS (Rebuilding and Disk Operating System) is very similar to GLaDOS (Genetic Life form and Disk Operating System). RaDOS is very dangerous, even more dangerous than GLaDOS. In 1957, RaDOS was created. In 2001, GLaDOS was created.
RaDOS (rebuilding and disk operating system)
