Wunderwaft
Knight Dude
I'll retract what I said about him being just like Ryu because I can see that he's different enough (although I do still see some similarities, which might just be because you can only kick and punch so many ways), but I still don't see him being interesting enough to fit in with Joker, Hero, and Banjo.
To me, the Fighter Pass would end up being "all those interesting characters... And the spiky fighty guy." Not that I'm saying people can't want him, I just wouldn't feel any excitement for his inclusion. My number one Namco choice is still Agumon.
Also, I think I read that his Japanese voice actor died, which immediately sends up red flags for his inclusion to me.