Poor Sazh. He got a raw deal from Square Enix. He got stuck a terrible name, some one-off Eddie Murphy mannerisms, and a battle stance so awkward that it was hard to look at. But he ended up being a pretty solid character anyway. It was like he took the crap he was dealt and made the best of it. But it doesn't look like he's doing much in Final Fantasy XIII-2.
Japanese magazine Dengeki PlayStation asked the developers about a possible return for Sazh in Final Fantasy XIII-2. The reply was that "Final Fantasy XIII-2 will continue after release, so look forward to later."
This seems to suggest that DLC will add some new game content, and that maybe Sazh will return in some form. I'd play a Sazh backstory adventure. I'd really love to see him pre-afro.
Japanese Sazh cosplay image by malfet_