You mean like co-op multiplayer? If so, I wish I could but multiplayer in Unreal Engine 4 is very difficult to program. Eventually I do want to try overcoming the challenge but right now my priorities are just making singleplayer horror games, y'know. But I would totally love to make co-op horror games in the future though, it would be a blast to work on.
No i mean characters you can switch to
Ah, as cool as that would be, I don't think it'd be possible for me to do. Maybe I could try doing something like that for Strange Terror: Ultimate Edition (Release date is unknown, could come out next year or the year after, who knows) since I'm no longer updating this game.