The Forth Wall RP

Choild, you are outside the forth wall of everything. TV shows and movies, videogames. Now, you have the power to spoil or not to spoil the characters' future. Help them stop from making mistakes and change the story. You are on the outside of the fourth wall and suddenly appear on the other side of the door so let's walk the hallway and see the room it takes us.

Also you can suggest fandoms but I don't know a lot...