Hmm. So then there's a couple of new things to think about. How far into the campaign are you?
Even if a solution would be conjured up and working, depending on how far you are, he may already have missed out on enough of that character's quest progression to really get the most out of the rest of it, perhaps? So if you're in Fort Joy and not too far in, perhaps the best idea would be to just restart.
Origin characters are still origin characters if you recruit them on the beach / in the fort. They're just considered as a companion rather than an avatar (starting character), but their story remains more or less the same. So if you've recruited Beast or Red Prince (the only two being on a beach iirc), then he should be fine enough and get their story I think.
Are you playing on Steam? Modded or unmodded game? If unmodded, you could add me on steam and invite me in on your save and show me in person. Add me on steam (friend code '925706457') if you fancy.
