Halo 3: ODST may have been mostly a success for Bungie, but there haven't been many indications the developer is interested in making the adventures of the ODST a regular occurrence. It was a spin-off, a one-time thing. But that doesn't mean we've seen the last of the cast of characters Bungie introduced in Halo 3: ODST. At the end of our post-release interview with Bungie, writer and creative director Joseph Statten dropped a hint about Buck, voiced by Firefly actor Nathan Fillion.
"I can’t comment on any future plans for our ODSTs," said Statten, crushing hopes. "But it would be a shame if we made a game about the planet Reach -- a place where Buck, the ODST’s squad leader, was known to be -- and not have him appear in some way shape or form…"
Sounds like a classic class of a non-confirmation confirmation. In other words, Fillion should have a role in Halo: Reach, though it's impossible to say whether it will actually be substantial.