Metafictional Transportation – The ability to travel between fictional places and/or fictional places and real places.
Loony Leo (Astro City) emerges from a cartoon film.
The Unwritten (Vertigo) has a character that has made the journey but does not know it.
Several one shot examples of metafictional transportation in the Silver Age including Adventures into the Unknown #116 (ACG), Boris Karloff Thriller #2 (Gold Key), Forbidden Worlds #37 (ACG), Twilight Zone #9 (Gold Key), Unknown Worlds #13(ACG) and Wonder Woman V1 #64 (DC).
The Last Action Hero is an action comedy that has an action hero in our reality.
The movie Pleasantville looks at what happens if modern teenagers entered a fifties black and white sitcom.
The Purple Rose of Cairo is a Woody Allen film that has the protagonist of the film leave the film and pursue a gal who he has noticed watches the film again and again.
The Televillain (Awesome) can jump into the reality of TV shows and was created by Alan Moore (Supreme V2 #57).
Gorak (Marvel)-Tales of Suspense V1 #14
Madhouse #107 (Archie)
Victor Conrad (Marvel) becomes the sixth frightened man in Tales to Astonish V1 #54.
A man trades places with a woman in a horrible painting in Chamber of Chills #22 (Marvel).
A thief ends up trapped in a painting he tried to steal in Journey into Mystery V1 #71 (Marvel).
Abbot and Costello #14 (Charlton)
Fictional Constructs – Second Doctor Sourcebook
The-Hulk-Hulk #11 (2017)
Unknown Worlds #32 (ACG)