We can add another citizen of the TV Universe to the list of those who are tele-cognizant: Superman!
Tele-cognizance is the knowledge that one is living inside the TV Universe, and that there are people in another universe watching.
In the episode "Peril In Paris", Superman tells Jimmy Olsen that he's quite close to Clark Kent as well. And then he looks right into the TV camera and winks to the audience viewing at home.
Having the advantage of tele-cognizance couldn't save Superman from death, however. It's my contention that the Man of Steel has been dead since the early 1960s; and that characters in the main Toobworld today know all about his secret existence as the mild-mannered reporter for a large metropolitan newspaper.