Edit: Woops, nevermind. Just read the online portion of the wiki. Makes sense that it's only randoms, as only live players who have not beaten that levels boss, and have a specific item to use, can "summon" ghost players. Ah well, looks hella fun regardless.
Sorry, but I could really use an answer on this, as another buddy of mine only wants it if we can purposely pair up. From what I've read, that's not how it works, right? Or am I mistaken?
[quote name='Zmonkay']so does the multiplayer base anything off of your friends list at all? I ordered a copy for myself and a friend today, and I'd prefer to play online with him (and others on my friends list) over randoms if possible.[/QUOTE]