We stopped by a location shoot for NBC's Heroes a few weeks ago, only to find out that Masi Oka's Hiro Nakamura (and a few of your other favorite superfolks) have somehow ended up in Africa. We chatted with Oka about the villainous Season 3 (premiering Monday, Sept. 22 at 9 pm/ET), how the strike affected the story development, and Hiro's speedy new nemesis.