This man is a subsitute for GLaDOS until she woke up
He is the Announcer
Talk about him HERE
--Secondhand Work 15:36, 4 May 2012 (UTC)
If you watch the screens, the Announcer actually does know the master turret is faulty, but the line is programmed to accept any new master turret (the screens show defective when the faulty master turret is placed).