“He feels at home in places we run from in fear,” says an associate of surrealist artist H.R. Giger, whose work is the subject of this loving, if limited, documentary. You may not know his name, but you know his signature, nightmarish iconography: He won an Oscar for the visual effects in 1979’s “Alien,” including the unforgettable mother alien with the Nefertiti-like head. Director Belinda Sallin spends much of her time in Giger’s pack-rat home in Zurich, where his “biomechanoid” creations, mostly female forms fused with machinery, are everywhere.

But the film fails to represent how singular and influential the late Giger is in popular culture. It glosses over his cinematic work — in addition to all of the “Alien” movies, he worked on a never-produced but much-vaunted version of “Dune” (recently depicted in another documentary) and other films, album covers and video games. We do visit the Giger Museum, in Switzerland, as well as the bar he constructed there — surely one of the world’s most awesomely unsettling places to drink to your own demons.