Bill Skarsgård on Castle Rock (2018)

The new Hulu fantasy horror series Castle Rock intertwines stories from within Stephen King's universe of fiction, as most of those stories took place in the town of Castle Rock. The first episode of the series introduces Bill Skarsgård's character, a mysterious and unnamed prisoner who is discovered in the bowels of the Castle Rock prison. He is taken to shower by prison guard Dennis (played by Noel Fisher). Bill shows some partial rear nudity for the scene.