Douglas Rain, the voice of Hal, aged 90

Canadian actor Douglas Rain, best known for supplying the creepily calm voice of the computer Hal in Stanley Kubrick’s 2001: A Space Odyssey, has died at the age of 90.

The Stratford Festival said Rain died on Sunday of natural causes at St Marys Memorial Hospital, near Stratford, Ontario.

He was one of the festival’s founding company members and spent 32 seasons performing there until 1998.

His roles at Stratford included playing Claudio in Measure For Measure in 1954, Malvolio in Twelfth Night in 1957, Edgar in King Lear in 1964, and Prince Hal in Henry IV, Part I in 1958, a play and a role he would return to in 1965 and would eventually take on the title role in 1966.

But it was the aloof voice of the artificially intelligent Hal 9000 – the forerunner of today’s Amazon’s Alexa or Google Home – where Rain entered the public’s consciousness.

Kubrick had heard Rain’s voice in the 1960 documentary Universe, a film he watched multiple times, according to the actor.

Rain was initially hired to narrate 1968’s 2001, but the director chose to go in a different direction.

Hal is the onboard master computer on the spaceship Discovery 1 but goes rogue. When astronaut Dave Bowman asks Hal to open the ships’ pod doors, Hal famously baulks. “I’m sorry, Dave. I’m afraid I can’t do that,” the machine blandly refuses. “This mission is too important for me to allow you to jeopardise it.”

When the astronauts try to disconnect Hal, he fights back. During his shutdown, he sings the nursery rhyme Daisy Bell and memorably utters: “I’m afraid, Dave. Dave, my mind is going. I can feel it.”

He was nominated for a Tony Award in 1972 for his role as William Cecil in Vivat! Vivat! Regina!

His other Broadway credits include The Golden Age in 1963 and The Broken Jug in 1958.

Getty. Douglas Rain was nominated for a Tony Award in 1972.