Adam West, the original Batman from the campy-classic 1960s series, will make an appearance during Big Bang Theory‘s 200th episode.

According to UPI, West, 87, will play himself in the episode alongside fellow guest stars Christine Baranski, John Ross Bowie, Sara Gilbert and Wil Wheaton, who will play himself as well.

Big Bang Theory lands Batman star Adam West for 200th episode via https://t.co/fXoKPJlBWN https://t.co/B4T13vWUSb pic.twitter.com/XSmhnPe1ti

— Coco (@CocoLaVieEnRose) February 6, 2016

The plot of the episode on CBS is being held tightly under wraps.

According to Yahoo News, West and his Bruce Wayne character has been the subject of many discussions on the show. Sheldon (played by Jim Parsons) often mimics the voice and Howard (Simon Helberg) has dressed up as the character. West was mentioned when Penny (Kaley Cuoco) revealed that she has no idea who he is, much to the disappointment of her nerdy friends.

Adam West to Guest Star on "Big Bang Theory's" 200th Episode https://t.co/aoHmOFVz21 pic.twitter.com/n7NsWaCIBj

— Comic Book Resources (@CBR) February 4, 2016

Other notable guests to have made an appearance as themselves on Big Bang Theory include Stan Lee, Bob Newhart, George Takei, Katee Sackhoff, Leonard Nimoy, Stephen Hawking and Summer Glau, among others.

The landmark episode of the Chuck Lorre, Bill Prady and Steve Molaro series will air Thursday night on CBS.

Adam West to finally guest star on The Big Bang Theory https://t.co/uXENg9EfXa pic.twitter.com/WBtmI4xwF2

— Polygon (@Polygon) February 4, 2016

Who’s totally psyched to see Adam West come to The Big Bang Theory?