system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel Comics/MCU] If Deadpool wanted to explain his 4th wall breaking ability to someone, who would be the most likely superhero or mutant to believe him about our world existing?
gpt
Definitely Dr Strange.

There's a comic where Strange explains to Gwenpool that universes leave impressions on each other, which is why events of one universe manifest as movies or comic books in a different universe. It's not a stretch to think that Wade somehow has the ability to see through to the other end of that tunnel.

Edit: It's likely not really that they manifest as media, but manifest in the minds of the people who *make* the media. So in a way, our universe impresses itself on Wade's mind the same way theirs left an impression on the minds of people in our universe, except instead of making comics or movies Deadpool just makes 4th wall jokes, knowing a version of him is appearing in entertainment media in another universe.