Robby the Robot is back, this time in 4K UHD. Arrow Video’s 4K restoration brings back the full early width of CinemaScope, along with re-created ‘Perspecta’ stereophonic sound. Hollywood’s one full-out attempt to depict an intergalactic Sci-fi future is a smashing success that relies on complex ideas as well as spaceships and monsters. It’s also a warning fable about runaway technology — are we Humans going to repeat the mistakes of The Krell?  Leslie Nielsen and Anne Francis shine, and the visual effects dazzle behind Bebe and Louis Barron’s electronic ‘tonalities.’

Forbidden Planet
4K Ultra HD
Arrow Video
1956 / Color / 2:55 widescreen / 98 min. / Street Date September 28, 2026 / Available from Arrow Video / 49.99
Starring: Leslie Nielsen, Walter Pidgeon, Anne Francis, Earl Holliman, Warren Stevens, Jack Kelly, Richard Anderson, George Wallace, Robert Dix, Jimmy Thompson, James Drury, Harry Harvey Jr., Richard Grant, Roger McGee, Morgan Jones, James Best, Frankie Darro, Marvin Miller & Les Tremayne (voices).
Cinematography: George J. Folsey
Production Designer: Irving Block. Mentor Heubner
Film Editor: Ferris Webster
Costumes: Helen Rose, Walter Plunkett
Art Directors: Cedric Gibbons, Arthur Lonergan
Effects and special designs: A. Arnold Gillespie, Josuha Meador, Warren Newcombe, Logan Frazee, Robert Kinoshita, A.D. Flowers, Glen Robinson
Matte Painters: Howard Fisher, Henri Hillinick, Matthew Yuricich
Music Composers (Electronic Tonalities): Louis and Bebe Barron
Screenplay Written by Cyril Hume, Irving Block, Allen Adler
Produced by Nicholas Nayfack
Directed by Fred McLeod Wilcox

The majority of Hollywood’s 1950s Sci-fi thrillers couldn’t afford to replicate the ‘far-out’ visions routinely found in Sci-Fi literature. Universal’s  This Island Earth captured the pulp excitement of colorful pocketbook covers, but only one studio really gambled on big-budget off-world Science Fiction. Even as MGM’s movie lot was shutting down,  Forbidden Planet focused its full technical resources on a lavish 25th-century spaceship, the landscape of a distant planet and a house of the future. It was the first film to take place entirely within a fantastic futuristic world, all of which had to be conceived and constructed from the stage floor up.

The film’s achievement is such that no Science Fiction effort surpassed it until Kubrick’s  2001: A Space Odyssey. It provided a technical template for the makers of TV’s  Star Trek and it was a touchstone Sci-fi fantasy for the next-generation special effects talents that made Star Wars. Forbidden Planet dazzles on home video, yet it really thrives on a giant screen. An okay Blu-ray arrived near the beginning of the format, but diehard fans are keen to know if Arrow’s new remaster is an improvement. We offer our standard take on the genre favorite, followed by an assessment of this new 4K 70th anniversary limited edition.

Forbidden Planet drops us into the middle of an intergalactic adventure. Star cruiser C-57D stops off at the planet Altair-4 to see what became of the spaceship Bellerophon, and an expedition that disappeared there ten years before. They find only scientist Edward Morbius (Walter Pidgeon) and his daughter Altaira (Anne Francis), living alone in a futuristic house with an amazing robot named Robby. Displeased by Morbius’s insistence that they leave, Commander John Adams (Leslie Nielsen) presses for more information on the fate of the other Bellerophon colonists, and an explanation for Morbius’ possession of scientific knowledge far in advance of Earth’s. Morbius’ secrecy and an awareness of a strange ghostlike presence on Altair-4 convince Adams that further investigation is required … even when Morbius alludes to dire consequences.

With all the nostalgia devoted to Sci-fi fantasies of the 1950s, one would think that the beautifully crafted Forbidden Planet would have been a roaring success. It has an intelligent script, romance, and never-before-seen special effect marvels to interest a wider audience than space-crazy kids. The film’s middling box office receipts paint a rather depressing picture of the economics of movie Sci-fi. Our favorite ‘A-picture’ classics were healthy hits, but only one or two racked up blockbuster attendance figures. MGM’s space movie performed better than most, but not enough to justify its enormous cost:  Earth vs. the Flying Saucers earned almost as much but was a low-risk proposition made for relative peanuts. The economics were clear. Tiny productions by Sam Katzman and Roger Corman flourished, while MGM’s ‘tradition of quality’ efforts couldn’t keep that giant movie factory running. The genre would be dominated by independents that threw together just enough production value for a movie matinee.

But Forbidden Planet has persisted as the wonder film of its era. All the way until Star Wars, it was the movie that delivered space ships, special effects and futuristic hardware. Most Sci-fi thrillers had 60 minutes of talk and maybe 10 of ‘the good stuff.’ This movie delivers a beautiful space cruiser gliding through the frame in its very first shot. It is followed by one amazing visual after another: a planet turning in space, a glowing eclipse, a saucer landing in an eerie desert under a green sky. The characters are professional military spacemen. And that’s only the beginning of the wonders to be found on Altair-4.

Forbidden Planet’s vision is like Disney’s  Monsanto House of the Future, but with a little sex. Anne Francis’ virginal Altaira communes telepathically with a deer and a tiger, providing a thematic harmony with things mythological. Altaira’s miniskirt and coquettish ignorance of ‘space wolves’ only makes her more attractive to the space troopers, who might as well be Yankee sailors in an unfamiliar port. Altaira’s appeal has elements of Brigitte Bardot (she’s definitely curious) and even Tuesday Weld (that Lolita smile).

Critic Pauline Kael noted Forbidden Planet’s clever adaptation of Shakespeare’s The Tempest and also expressed disappointment at the film’s conception of a militaristic space-age future. Our brave spacemen tote ray guns, and force is a first option. Outer space is an extension of the Wild West, where one anticipates violence and aggression in every encounter. Although Forbidden Planet’s ideas run deep, its surface is pegged to a vigilant Cold War posture.

MGM’s Dore Schary liked Allen Adler and Irving Block’s original story “Fatal Planet” — its main conflict is psychological and its mythological allusions fit in with legit Sci-fi literature. We are impressed when the storyline halts, to make room for a 15-minute archeological rumination about an extinct civilization. The planet was once ruled by an alien civilization called The Krell. The race is long gone but their technology lives on. An amazing twenty-square mile power plant still functions under the surface of the planet. Morbius says that he’s tapped a tiny portion of the Krell knowledge. With his brain power doubled, he has used more Krell science to ‘cobble together’ his robot manservant Robby, the movie’s version of the Bard’s character Ariel.

Readers of Science Fiction were pleased to learn that Robby is programmed with Isaac Asimov’s Laws of Robotics, the ethical rules that govern the Robot’s behavior. Also given emphasis in Forbidden Planet are some basic Freudian principles. Morbius reveals that the extinct civilization’s giant underground complex was built to convert desires into physical realities ‘without instrumentalities,’ by thought alone.   Set free of the physical limitations of their bodies, each Krell citizen essentially became a Demigod. They did not realize that this power would be tapped by both their conscious minds and their secret subconscious selves. Soon after the activation of the massive thought-projection machine, the Krell perished in an orgy of destruction and murder.

Morbius found the Krell machine still-running. He tapped its functions, unaware that the same Psych 101 pitfalls awaited him as well. When his fellow colonists disagreed with his ‘enlightened’ decisions, Morbius’s subconscious manifested an Id Monster to destroy them.

Our  review from 2010 discussed the Freud business with Morbius and his daughter, content that audiences of 1956 may have missed while waiting for more space-age thrills. As a holdover of the magic aspect of The Tempest, Altaira charms wild animals because she’s still a pre-sexual child. Dr. Morbius is supposed to be the genius, but Leslie Nielsen’s supposedly unenlightened Commander Adams is the one to recognize the ‘magic’ of Altaira’s loss of innocence. At the finale, Adams is the one to school Morbius with the lowdown on the Id and the ‘primitive savage lurking within us all.’  The church wing of the Production Code office gets its way throughout the picture. Morbius is damned for knocking on the door of God-hood, a taboo in any shape or form.

Other Sci-fi pictures warned about nuclear annihilation, but this epic points the finger at runaway technology. A sentient alien race destroyed itself by creating machine-computers that became self-sufficient. When the Internet came along, Forbidden Planet fans recognized its similarity to the telepathic linkage that inter-connected every Krell citizen on Altair-4. We’ve seen enormous cultural and social changes with our own World Wide Web. The dangers are different but related just the same. The ideas of a crank minority can sway millions, creating a mob. The ‘Krell Internet’ didn’t need the excuse of Id Monsters to dramatize the danger … our conscious selves are fully capable of supporting actions that are BAD for society at large.

The other deep-thought Science Fiction movie that foretold the Social Media transformation of mankind is Wim Wenders’  Until the End of the World. Wenders made the picture in 1990, so his world of 1999 has no Internet … yet the inventions he does propose express perfectly the way people how thoroughly relate to their smart phones and social media accounts. Adding AI to the mix undercuts everything written and every image we see, and the ‘reality’ we can perceive is becoming a synthetic creation. The world needs to change, but it also needs to retain a social order that works for more than a minority with the ability to control our sources of information.

Back to the precocious Sci-fi charms of Forbidden Planet. When we were younger were were duly impressed to learn that Joshua Meador, a Walt Disney animator, had created the Monster from the Id. What seemed a genuine miracle in 1956 now look like conventional animation, with the Monster from the Id coming off as a morph between Morbius and Leo the Lion of MGM’s logo. The spacemen mangled by the Monster are a refinement of the excellent rotoscope work seen twenty years before in MGM’s  Tarzan movies, where lions were made to climb on elephants, etc. The most effective animations are the long lines of ‘tracer’ rays fired by the troopers’ ray gun cannon. The guns shoot into a canyon, trying to hit an invisible target. Multiple camera angles, all complex composites, were terrific on a big screen. The rays do seem to move too slowly. Did they do that so they would less like the bullet tracers familiar from wartime combat footage?

Some of the flying saucer shots were created with old-fashioned wire rigs similar to those used by MGM to fly airplanes in  World War II movies. Effect veteran A.D. Flowers helped with those original rigs, and described seeing very heavy saucer models being filmed live-action for Forbidden Planet. Giant cyclorama backdrops were painted in MGM’s special scenic arts dock. Elsewhere standard matte paintings were used, often in conjuction with animation and live-action added through mattes, or rear-projected into holes in the paintings. [ We see some bits of this, albeit pan-scanned, on one of the disc’s outtake extras. ]

A shot that impresses us in Forbidden Planet might not be obvious to some. In the Id attack sequence, the camera pans from a live-action shot of ray gun cannons firing to the left, to a view of the canyon rocks being bombarded. The shot could conceivably use the cyclorama, but it also might be an optical pan connecting the static shot of the guns with a matte painting on the left. What sells the shot are the tracer rays, that shift in perspective as the camera pans. It’s a truly refined bit of effects animation.

It was reported that Dore Schary ended a rough cut screening with the instruction to immediately begin the post-production process. Before it was pulled from his cutting room, editor Ferris Webster only had time to do a few minor adjustments, when he thought it needed another ‘tightening’ pass.We don’t think the movie would be improved much by an editorial tightening up. The pace needs to be even to let us soak up everything Morbius is explaining. As kids, we wanted more time to think about all those ideas.

Frankly, general film audiences of 1956 were not asked to think so much about abstract concepts. Guessing that much of his audience wasn’t paying full attention, Alfred Hitchcock would pause his thrillers to insert plot re-caps, to retain their interest. How many audiences exited this show asking, ‘what was it all about?’  Most of the movie is directed in simple master scenes, with wide shots that show off the impressive sets. I can see shortening a few reaction shots, but it’s nice not to feel rushed while contemplating Klystron Relays and a creature ‘that can renew its molecular structure from microsecond to microsecond.’

←  The pioneering magazine Cinefantastique published several double issues devoted to individual classic pictures, like  The War of the Worlds. For a 1979 issue, publisher Clarke and writer Steve Rubin collaborated on an 84-page making-of article that is still recommended reading. It’s exhaustively researched and illustrated. It’s where I learned that the extreme high angle of the three tiny figures walking in the subterranean super-machine was photographed from the top of a Bekins Storage building, on North Highland Avenue about a mile from CineSavant Central.

Forbidden Planet waited about five years to show up syndicated on TV. It arrived in Los Angeles on our KTTV Channel 11, probably in color but pan-scanned. Some 16mm prints from Films Incorporated were given a compromise scan of maybe 1:78, cutting of the sides of the image. We didn’t see the show in color until we screened MGM’s studio print for a Sci-fi series at UCLA; even with a slightly faded image, it looked incredible on the big Melnitz 1409 screen. Filmex showed it the next year, for their weekend-long Sci-fi marathon. ‘New’ 35mm repertory prints showed up early in the 1970s as well. I was told that MGM had printed them for a children’s matinee series. The surprise was that they weren’t intact … the Adams / Altaira ‘kissing scene’ had been deleted.

Arrow Video’s 4K Ultra HD of Forbidden Planet is billed as a new 4K restoration from the original 35mm negative by Arrow Films, in its original 2.55:1 aspect ratio.  ^*  (see below)

The picture is encoded with Dolby Vision / HDR10. A much touted extra is a Perspecta stereo track, in addition to the original lossless mono and a re-mixed 5.1 audio option. We also cop to liking the insert replica of the original movie poster art.

How does the 4K video fare?   We like it a lot, even though it looks like a movie that required a lot of color tweaking to offset the problem of a faded negative. Having never seen a perfect Eastmancolor print, I can’t say what the exact color of Altair 4’s green sky should be. The image is sharper than the Blu-ray but not razor-sharp, a quality of original CinemaScope. The 4K image sees so much, that we can see when tiny shifts in granularity occur in dissolve transitions.

MGM at this time was cutting tight around transitional opticals, instead of duping entire shots. Digital work eliminates the bumps in alignment and the jumps in color across these scene changes. The Blu-ray had its share of white specks, which are now gone. The stars in space are now very distinct. The one thing not looking good is the Leo the Lion logo up front …. something went wrong there, we think.

Scenes in and around Morbius’s house are flat-lit and high key; night scenes and those inside the space ship and the Krell lab are more dynamic. The action around the swimming pool has always looked a little lighter; we wonder if those particular scenes are from a different printing source. The added resolution really lets us study the faces of the supporting cast, that never get close-ups. We can now pick out James Drury from The Virginian and Morgan Jones from Roger Corman’s  Not of This Earth, even in the wide shots.

When Morbius’s steel shutters open and close, they were literally edits on the film. Early videos and even some prints had telltale splice marks at every cut that spoiled the effect. The Blu-ray and 4K releases clean them up.

This particular disc set has the feature only in 4K. Most of the video extras are on the second Blu-ray disc. We were hoping for some new items but Arrow mostly reproduces the good featurettes and assorted odds and ends from the Blu-ray special edition. They do not disappoint. The talky ‘deleted scenes’ originally came from a 16mm work print made to guide Louis and Bebe Barron in concocting their revolutionary synthetic soundscapes and ‘electronic tonalities’ score. We first saw those outtakes on a very early Criterion disc; the quality has not improved. An extra selection of ‘lost’ material are unaccountably transferred pan-scan. They are not ‘lost scenes,’ but outtakes recovered from a stock footage library.

We get two excerpts of Walter Pidgeon interacting with Robby while plugging the film on a 1956 MGM TV show. An interview docu rounds up a number of critics and interested parties to explain why Forbidden Planet was an effects ‘n’ fantasy touchstone for later filmmakers and effects people: Dennis Muren, Phil Tippet and the late Bill Warren. Anne Francis is there as well. The relatively lavish TCM docu Watch the Skies! presents similar enthusiasm from top ‘student filmmaker’ era directors: Steven Spielberg, George Lucas, John Carpenter, Ridley Scott and James Cameron. It covers the whole decade of ’50s sci-fi. A second featurette examines the design and construction of Robby the Robot, still the most popular and recognizable movie robot and far more interesting and practical than those Star Wars pretenders. Actually, none of them are capable of using an ordinary flight of stairs, that I can see.

Robby also makes an appearance in an entire episode of TV’s Thin Man. A full second feature is the 1957 The Invisible Boy, in HD. Deserving of its own review, the film will strike viewers as a retreat to the level of typical ’50s sci-fi, albeit with some fanciful touches. A mischievous boy uses his scientist father’s super computer to make himself invisible. He befriends a robot (Robby) that falls under evil influences. Besides the expected robot rampage and army retaliation, the film shows the kid using his invisibility for some rather disturbingly naughty purposes … like peeping into his parents’ bedroom!

The 44-page illustrated insert pamphlet has a thorough essay comparing Forbidden Planet directly with The Tempest. Johnny Mains offers a generalized making-of essay that’s a good read. We looked forward to the promised Bob Furmanek article on Perspecta Stereo, but Bob only gives an intro to 8 pages of reprints from Perspecta press handouts.

An amazing CineSavant exclusive:  A cookie given out at a 2009 screening party at the Egyptian theater to welcome the first Blu-ray. Took two, ate ’em both.  →  

A new feature is a talk piece with composer Neil Brand, who spends quite a long time explaining the experiments of the remarkable bohemian audio artists Louis and Bebe Barron. Listeners that know more about music composition or audio engineering might get a lot from the featurette. Some of the Barrons’ pre- Forbidden Planet works are mentioned, but not heard, but there are few samplings of the artists’ tracks. The Barrons were not well treated by Hollywood. The Hollywood Guilds made sure that the couple would not be credited as music composers, Their contract with MGM appropriated all rights to the ‘electronic tonalities’ they delivered. And people wonder why so much creative talent stayed far away from Hollywood.

A good video on the Barrons’ techniques is still online. It was assembled for the MP Academy by movie audio expert Ben Burtt. We get to hear watch (and hear) Mr. Burtt as he manipulates tape recorders the way Louis and Bebe did, back in the day of Hi-fi equipment with vacuum tubes instead of transistors or printed circuits. I connect to that resource plus three other Forbidden Planet– related articles, here:

Ben Burtt discusses the Electronic Tonalities of Forbidden Planet  scroll down to 05 15 15

The Forbidden Planet Cyclorama

American Cinematographer articles on Forbidden Planet

Forbidden Planet: The Great Krell Machine Ambient Noise.

Reviewed by Glenn Erickson

Forbidden Planet
4K Ultra HD rates:
Movie: Excellent
Video: Excellent
Sound: Excellent Restored original lossless mono, restored original Perspecta stereo, and DTS-HD MA 5.1 audio options
Supplements:
New audio commentary by Kim Newman and Barry Forshaw
Featurette Unearthly Aura, an appreciation of Bebe & Louis Barron by composer Neil Brand
Documentary Watch the Skies!: Science Fiction, The 1950s and Us
Documentary Amazing!: Exploring the Far Reaches of Forbidden Planet
Featurette Robby the Robot: Engineering a Sci-FiIcon
MGM feature film (HD) The Invisible Boy, a bonus movie featuring Robby the Robot in his second feature film
TV show ‘Robot Client,’ an episode of The Thin Man TV series
Two excerpts from MGM Parade
Deleted Scenes
Lost Footage
Original Shooting Script
Theatrical trailer
Image galleries
Collectors’ booklet with new writing by Frank Collins and Johnny Mains, and select archival material.
Deaf and Hearing-impaired Friendly? YES; Subtitles: English (feature only)
Packaging: One Blu-ray in Keep case
Reviewed: August 30, 2026
(7579forb)

^*  This issue may be a big deal to some fans. To compare aspect ratios, we did a quick unscientific comparison with the older Blu-ray. We found that the new scan was a tad wider. We therefore concluded that the older Blu-Ray had been formatted close to 2:55 as well. But we checked the change only in Width, not Height. on the three shots we sampled, the older Blu-ray had a sliver of extra image on the lower extremity, and a slightly larger strip of added information on top. Arrow’s copy mentions a new 4K restoration, but not a new scan. This is more unscientific guesswork, but now we have to think that Arrow took a pre-existing 4K scan and reformatted it to display a slightly wider Aspect Ratio. They seem to have found an extra bit of real estate on the left, but trimmed a bit from the top and bottom. Whether this is minor or major is up to consumers to decide, but it doesn’t look like an authentic 2.55:1 ratio as seen in 1956.

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