The towering Pirate Clark in Kane Parsons’ Backrooms was an almost entirely practical creation, with former basketball player Robert Bobroczkyi bringing the monstrous character to life on screen. The Romanian–Hungarian actor stands a towering 7-foot, 7″ tall, and he previously played the character known as the Offspring in Fede Alvarez’s Alien Romulus.

As Luiz H.C. noted in an article here on Bloody Disgusting last month, “Though there was some obvious CGI involved in making the character’s peg-leg and nightmarish face more believable, Robert Bobroczkyi’s monstrous performance and his natural frame helped to make that final chase sequence a clear highlight among this year’s genre offerings.”

How did they pull it all off? A behind the scenes documentary will be included on the upcoming Backrooms physical media release, and A24 is offering up a sneak peek this week.

A24 previews the footage released today, “Robert Bobroczkyi’s transformation into Pirate Clark from the exclusive making-of doc, only available on the Backrooms Blu-ray.”

“Pirate Clark is a monster. He understands his body. He knows what his powers are. What he can do. What his limitations are,” creature performer Robert Bobroczkyi explains in the clip. “So his movements and his actions are deliberate. He doesn’t just twitch for no reason.”

He adds, “The prosthetics include the two hand pieces, and then the helmet, the face, the head piece. The head’s quite heavy. You don’t see a lot out of it. But it’s really cool.”

Watch the footage below and pre-order your copy of Backrooms on Blu-ray or 4K now!

A24 is expecting to ship out Backrooms physical media orders in late August.

Robert Bobroczkyi’s transformation into Pirate Clark from the exclusive making-of doc, only available on the Backrooms Blu-ray. pic.twitter.com/yAWdscUOkD

— A24 (@A24) July 27, 2026