Best movies like The Human Duplicators

A misguided scientist enables an alien from Venus named Zontar to come to earth in order to "help solve man's problems". However, as soon as Zontar arrives on Earth, it quickly becomes obvious that the three-eyed, bat-winged, skeletal black creature has a hidden agenda.

Interviews and documentary footage combine with the fictional story of an air-force pilot who encounters aliens.

An anemic alien comes to Earth from a dying planet, in the remake of the Corman 50s classic.

When KAOS develops a bomb that can dissolve all clothing, Maxwell Smart is brought in to foil the evil plot.

When Environmental Protection Agency inspector Steve Malone travels to a remote military base in order to check for toxic materials, he brings his family along for the ride. After arriving at the base, his teenage daughter Marti befriends Jean Platt, daughter of the base's commander, General Platt. When people at the base begin acting strangely, Marti becomes convinced that they are slowly being replaced by plant-like aliens.

A UFO is stranded on earth and impounded by the US government. Its pilot, a cat with a collar that gives it special powers, including the ability to communicate with humans, has eluded the authorities and seeks the help of a scientist in order to reclaim and repair his ship and get back home.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

Aliens from Outer Space are slowly switching places with real humans -- one of the first being a young man about to get married. Slowly, his new wife realizes something is wrong, and her suspicions are confirmed when her husband's odd behaviour begins to show up in other townspeople.

An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.

After a police chase with an otherworldly being, a New York City cop is recruited as an agent in a top-secret organization established to monitor and police alien activity on Earth: the Men in Black. Agent Kay and new recruit Agent Jay find themselves in the middle of a deadly plot by an intergalactic terrorist who has arrived on Earth to assassinate two ambassadors from opposing galaxies.

A space shuttle mission investigating Halley's Comet brings back a malevolent race of space vampires who transform most of London's population into zombies. The only survivor of the expedition and British authorities attempt to capture a mysterious but beautiful alien woman who appears responsible.

Aliens have landed and are hiding on Earth, but need Earth’s scientists to help them fight an inter-planetary war.

Test space rockets exploding at liftoff and increased reporting of UFO sightings culminate in a direct attempt by alien survivors of a dead, extra-galactic civilization to invade Earth from impervious flying saucers, using ray-weapons of mass destruction.

Mota is a Martian representative, who has come to impose interplanetary law on the Earth (which has become too dangerous); opposing his authority is Kent Fowler, who resists the alien plot, without understanding its details.

Area 51, flying saucers from another world - and the program to create a fierce technology. Bob Lazar remains the singular most famous and controversial name in the world of UFOs. The reason you know about Area 51 is because Lazar came forward and told you about it. His disclosures have turned his life upside-down and he has tried to stay out of the spotlight. For this reason, he has never let any filmmaker into the private world of his daily life - that is - until now. Corbell’s film explores Lazar’s claims through the lens of thirty years - providing rare and never before revealed footage - guaranteed to alter the landscape of the debate.

This is the story of two apprentices who know more than their mentors. One is Kasper, who discovers the Hidan of Maukbeiangjow, to where six girls have been abducted. He is apprentice to Sam Trowel, whom Fred refers to as "private pig," an independent investigator who gets his mission information through a time-delay self-destruct tape (that is a parody of Mission: Impossible). The other is Prudence, a Christian spiritualist who is an apprentice to a wizard named Aph. Aph has had the impudence to use vodoun rituals to possess corpses with demonic earth spirits, or the spirits of extraterrestrials summoned from the Red Star galaxy. Fred and Junior tie up Prudence and a zombified girl named Rosebush while an alien learning to use the body of Ruthie, one of Trowel's operatives, keeps Kasper tied up while she guards whom she calls "the Prudence." The first alien brought by Aph eventually takes Trowel's body. He is intent to use Fred's safe-cracking skills to destroy evidence of his arrival

A team of astronauts is sent to the moon to rescue an alien who is seeking help to save her dying race. They are attacked by a force of bandit robots and discover that enemy spies are out to kill the alien.

The weirdest alien of the galaxy pays a visit to Earth... Jerry Lewis is Kreton, a childish alien who, against his teacher's will leaves his planet to visit the Earth, and lands in the backyard of a famous television journalist who doesn't believe in UFOs and aliens. Wanting to study humans but not able to fully understand them, Kreton makes a mess out of it, generating a lot of comic situations.

Since the 1940's alien beings known as "GRAYS" have been sighted around the globe with the thought that they visit our planet to study our species and civilization before they eventually invade...but what if we're wrong? What if they are only here to protect us? After a meteorite crashes to earth awakening the extraterrestrial creature within, a young woman is abducted by an alien "GRAY" to aide in hunting down and destroying the creature before it can reach a second meteorite that fell to earth decades earlier unleashing its deadly infestation of earth.

Captain Rameses and his Legion of the Winged Serpent brigade are out to claim Earth for their dying race. Out to save Earth is an alien guard patrol located in the Bermuda Triangle, the League of Races. LOR leaders warn Rameses that he's breaking galactic treaty rules. The alien villain responds by launching an invasion which telepathically drives Earthlings to suicide. The LOR implore UFO expert Professor Duncan to help them. Eventually, the two alien forces battle. Will the Earth be saved?

Adrianna (Chong) is a beautiful alien woman who has come to Earth in search of a half alien man (Wirth). She needs him to help her defeat the evil alien Pallas, who himself is out to kill her.

Two friends on a road trip pass through a town where aliens are landing and feeding upon the some of the civilians.

In the near future the US Government has created an elite team of soldiers specially trained for action in the event of a hostile alien encounter. A multi-national force, they are the last line of defense

In this sci-fi adventure a gorgeous alien woman is sent to Earth by mistake from the planet Epsilon. Landing in the Australian outback she meets a surveyor and they cross the continent together. However, she spends the trip haranguing him for the ecological recklessness and avarice of the human race.

Aliens crashland near a small desert town, strewing odd bluish-glowing rocks throughout the area. Townfolk notice something is amiss when temperatures begin to soar, water disappears, power goes down and people seem not to be themselves.

Earth's position in the universe has become of vital strategic importance to those who have, until now, only studied us from the far reaches of space. Knowing our weaknesses, they have planned their attack, and now, in just 5 days, life on Earth will change forever. Robert Casey, a retired US Intelligence agent turned UFO investigator, races to discover the truth about the Dominion and what it has in store for the human race. Time is running out...

Stranger from Venus (a.k.a. Immediate Disaster and The Venusian) is the story of a woman who meets a stranger with no pulse who has the power of life and death at his touch. He is here from Venus to warn Earth about the atom.

Three beautiful Space Babes find themselves stranded on Earth when their spaceship runs out of energy after a dangerous encounter with their mortal enemies, the Scrotes. Once they discover human sexual arousal can recharge their ship, they accept the help of a lonely farm boy to harness energy at a local strip club and get back home — all while avoiding the nasty Scrotes.

An alien from another planet with great super powers comes to earth to destroy the whole human race by possessing their bodies. Alien bounty hunters Staleth is sent with Colinus to try to stop him before its too late.

A group of aliens (who look a lot like humans) get stranded on a planet covered with prehistoric monsters.

For millennia the Alien force has watched and waited, a brooding menace that has now at last decided to take over the Earth. Communications systems worldwide are sent into chaos by a strange atmospheric interference, a massive spaceship heads towards Earth and smaller spaceships begin to cover entire cities. Suddenly, the wonder turns into horror as the spaceships destroy the cities with energy weapons. When the world counterattacks, the alien ships are invincible to military weapons. The survivors have to use their wits to kill the aliens, or die.

Recovered footage and self-filmed documentary that journals a UFO sighting and possible abduction. This found footage film will test even those with the most open-minded beliefs. Is "The Rejected" actual proof of aliens on Earth or is this an elaborate hoax? We let you decide.

Two different alien races are at war. Representatives of each race have landed on Earth to battle it out here, but they've taken human form and they can only spot other aliens through the use of special glasses.

Assassinaut is a science-fiction adventure film about a young girl who braves the alien wilderness of a faraway planet to save the President of Earth from a murderous astronaut.

An alien race sends cyborgs — made to look like the son of a famous scientist, whom they killed when he landed on their planet — to Earth to help pave the way for an invasion.