Spoilers for season four of Heroes are already leaking out.

Aside from more time travel in Hiro's future, E! Online reports that the most misused character on the show is also in for a dark future.

It looks like Hiro's bloody noses and headaches won't going away for awhile. In fact, these symptoms will be cause for speculation about losing yet another main character.

But there's no way theyd kill off Hiro, right? The show has enough problems killing off anyone, let anyone one of its biggest fan favorites.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.