system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] When did Deadpool start breaking the fourth wall?

Was Wade always aware that he's a comic book character, or did something happen when he went into the Weapon X program that made him aware?
gpt
Something happened to Wade Wilson when he entered the Weapon X program that gave him the peculiar mental quirk of believing that he is a fictional character in a comic book. She-Hulk suffered from a similar affliction for a time after leaving the Fantastic Four and Avengers, but has seemingly recovered and doesn't wish to talk about that period of time in her life, which to be fair was full of rather strange and odd adventures.

This may have something to do with the fact that Marvel does publish comics loosely based on the real world exploits of certain heroes, such as the Avengers and Fantastic Four. But Marvel doesn't publish a comic based on a mercenary who fights the X-Men, as the X-Men have always been one of Marvel's lowest selling titles, kept around solely because Stan Lee and later Marvel editors sympathize with mutant rights activism.