"Hans Rudolf "Ruedi" Giger (pronounced /ˈɡiːɡə(r)/; born February 5, 1940) is a Swiss surrealist painter, sculptor, and set designer. He won an Academy Award for Best Achievement for Visual Effects for his design work on the film Alien.
Giger's style and thematic execution have been influential. His design for the Alien was inspired by his painting Necronom IV and earned him an Oscar in 1980. His books of paintings, particularly Necronomicon and Necronomicon II (1985) and the frequent appearance of his art in Omni magazine continued his rise to international prominence. Giger is also well known for artwork on several records."
Source: Wikipedia, "H. R. Giger", available under the CC-BY-SA License.