[quote=@Revolutionary]
<Snipped quote by Etcetera>

I like him, but did he really impact anyone enough to warrant characters going to visit him? But yeah, a what happened to him last/where is he now type of question.
[/quote]

Perhaps not, but he's also not so much part of the group either. I believe the last time he was seen, Serenity was doing something with him involved. Now, he's likely either at his lab or the resistance base.