Who was the voice of Mother in ‘Alien’?

Helen Horton provided the voice of MU/TH/UR, the ship’s computer known as Mother, in Ridley Scott’s 1979 film *Alien*. Though heard only as a computer voice, Mother helps shape the film’s tension and raises questions about responsibility: she follows instructions that serve the Weyland-Yutani Corporation, putting the Nostromo’s crew at risk.

The article contrasts Mother with the more overtly menacing HAL 9000, noting her direct, compliant tone and the significance of giving the computer a female voice and the name “Mother”. Horton’s screen work was limited, but the role became her best-known; she later appeared in minor parts in *Superman III* and *Bullseye!* before her death in 2007. Horton was also the grandmother of actor Lily James.