He may be the Big Kahuna at the FBI, but Phillip Broyles is by no means the biggest character on Fox's "Fringe."

That role is reserved for Anna Torv; however, according to actor Lance Reddick, Walter (John Noble) is now becoming the central character on the series. And, it's all thanks to an intricate string of secrets leading up to the biggest of all : Peter (Joshua Jackson) is not really Peter.

"We've known [about Peter] for a while," Reddick explained. "It's just knowing that someone besides Walter knows it now... The question is, what is that going to do to his relationship with Walter? And once Walter's relationship with Peter changes, how is that going to change Walter's character?

"In some ways, I feel like Walter has become -- even more than Olivia (Anna Torv) -- the central character of the show. He's become the thing around which the entire show revolves."

So with Walter quickly stealing the spotlight, what is in store for Phillip Broyles? Not even Reddick knows for sure except that his character will become heavily involved with the developments between the different realities. And, next season, fans should expect to see a lot more of his character.

"I don't know. All I know is that I've been told that my character figures very heavily into what's coming. What's happening between the two universes," he said.

In addition to bizarre mysteries, reveals and paranormal activity, "Fringe" seems to be following in the footsteps of "The X-Files" for blending the out-there storytelling with some graphic, and almost disturbing, imagery. While it may add to the overall dark atmosphere of the series, it can be a little disturbing : for viewers and for the cast.

"I have to admit that one was pretty icky," Reddick said, referring to the episode "Snakehead." "I remember when we were on the beach with the bodies, it was really cold and raining. There were all these extras mixed in with mannequins.

"Somebody would be lying there dead and then they'd move and I would jump! And when we got to the scene where Walter's pulling this thing out of this guy's mouth, oh, God, that was gross... John [Noble] loves that stuff. He's a real card. He's got a wacky sense of humor."

"Fringe" airs Thursdays at 9 p.m. ET on Fox.