In Gil's route Mark gave the pendant to Gil. I think though for the story, the pendant is already in the possession of whoever's route you choose. Kinda like fate binding the owners of the pendants together. It's been alluded to in one of their routes in a flashback that the pendants are tied to a very particular and important story that Walter told Mark which is why Mark got them for himself and Walter before Walter moved away.
Ohh but that aside. I'm still curious about the two other main characters that still haven't appeared (maybe) and on the video trailer there were six of them it can be Walter , Gilbert , Parkie , Lars , ? And ?.
I don't think Mark and Anders are included. And there are also 6 compasses mentioned but i didn't see any compass in the game...Or was it just a story. I said too much sorry i'm just curious about it.
I actually never saw the video trailer but in the game even I'm curious about the blacked out character icons. As for compasses I haven't heard anything about that in-game just yet.
Now that you mention compasses though, I've always been curious about the pendant's design in Walter's picture. Reminded me of a compass the first time I looked at it. Don't be sorry about saying too much either. We all enjoy the game and I just learned something interesting. After all, I didn't know about the compasses until now.