DimJim said:
You first learn of this guy when you find the Map System, with the writing on the back. Then, you see him again in the waterway cabin, although it may be another guy. Then, the last one is the voice in Hell. Could they all be the same person? Who was/were he/they? How did they know about Quote?
1. The map guy could be anyone alive on the island today (as if), or a dead member of the exploration team from ten years ago (more likely).
2. I forgot the waterway message, can you repeat it?
3. The hell voice was a narration. It was talking to the player, not Quote.
MetaSeraphim said:
The 5th wall because it's cooler.
There are only four walls: Background, left side, right side, and the 4th wall which is where we see the game/movie/comic through. The idea behind breaking the fourth wall is that it supposedly allows the characters to see the real world much like you can see them. If there is a fifth wall (which wouldn't make sense in the slightest) then breaking it wouldn't do much.
EDIT: Oh. I looked it up and there is a term "fifth wall". Though despite the existence of the term, it is incorrectly worded, there is no such thing as a fifth wall as there are only four walls.