As previously reported, Leonard Nimoy is set to guest star on the Fringe season finale. He'll take on the important role of William Bell.

Below, we've got a look at the Star Trek actor in character. But first, let's hear what executive producer Jeff Pinkner has to say about Nimoy and about Bell's relationship with Walter Bishop:

“He [Nimoy] plays William in a way that’s kind of unexpected,” Pinkner said at last week’s Paley Festival Panel. “And you go, ‘Oh my God, I now see why these two men were simpatico, were like minded, even though one went into an insane asylum and one went on to be one of the richest men in America.’ Maybe there’s something to that."

The Fringe season finale airs on May 12.

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