The Most Unforgettable TV Show Aliens Of All Time

By Rick Gonzales | Published

Most Unforgettable TV Show Aliens

One of the biggest life mysteries has been debated time and again and we still have no definitive answer – are we alone in the universe? While more and more proof has begun to leak out that perhaps we are not the sole residents in the galaxy, television shows with their TV aliens have made it perfectly that they do believe it is just a matter of time before aliens reveal themselves.

TV aliens are not a new occurrence. Going back to the 1963 series, My Favorite Martian, and the 1967 series, The Invaders, television has long presented the notion that aliens live among us. TV aliens have been presented in just about every form imaginable, from scary to funny. So, who are the most unforgettable TV show aliens? Let’s see if we can find out.


You simply cannot talk TV aliens and not have Mork in your conversation. The Mork & Mindy sitcom ran from 1978-1981 and was the star-making vehicle for the late Robin Williams. Mork was from the planet Ork and for four seasons tickled audiences’ funny bones with his unrelenting and crazy humor.

Mork made his first appearance on the hit sitcom Happy Days, which sparked the spin-off that introduced the world to Williams. Pam Dawber played Mindy.

The Daleks

We are once again going to use the Way Back Machine for this TV alien. Here we are going back to late 1963 and early 1964 to the second serial of Dr. Who, when we first saw the Daleks, Dr. Who’s most popular villains.

The Daleks are a race of aliens, mutated creatures who need the radiation in the atmosphere to survive. As Dr. Who and his crew try to escape the Daleks, they learn more about their new enemy and the war that the Daleks were involved in.



There have been a few iterations of Battlestar Galactica and with each one came a different iteration of the Cylons. In the original 1978 series, the Cylons are a race of robots that were created by a reptilian race. They are at war with the Twelve Colonies and make their presence known during Battlestar Galactica’s single season.

When Battlestar Galactica was rebooted in 2004 featuring the Cylons as the main antagonists. When we first see the Cylons in the reboot, they have just laid waste to the Colonies, taking the lives of several billion people. As far as TV aliens go, they are one of the most lethal.

The Greys

The Greys, known by their formal name of Reticulians, is an alien species who made many appearances on the hit series The X-Files. It is said they hail from the binary star system Zeta Reticuli, something that alien abductees claim to be true. The Greys worked with the Syndicate in order to colonize Earth. Thankfully Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson) were on the job.

The Wraith

The Wraith are TV aliens that come from Pegasus, a satellite galaxy within the Milky Way. Another particular nasty species, they did major damage on the series Stargate Atlantis. The Wraith takes the life force from humans by using the suckers they have on the palm of their right hand.

They take this life force as a form of nourishment and after they get their fill, they will hibernate for centuries. Unfortunately for the Atlantis, the Wraith were not in a hibernating mood.

The Solomons

Like Mork in Mork & Mindy, the Solomons were a different breed of alien. The sitcom 3rd Rock from the Sun ran for six seasons and told the story of a group of four extraterrestrials who are on an expedition to Earth.

These aliens consider humans and the planet to be insignificant, but they are there to observe Earthlings. John Lithgow, Kristen Johnson, French Stewart, and Joseph Gordon-Levitt starred in this hilarious sitcom about aliens trying to assimilate themselves into the human way of life.

The Goa’uld

One of the nastier TV aliens comes from Stargate SG-1. The Goa’uld is one of the most dominant alien species in the Milky Way galaxy. They first appear as serpent parasites before forcibly taking on human hosts. They are driven by power and have enslaved numerous worlds.

Goa’uld’s can possess any human being they wish and have the ability to suppress their own identity in order to take full control of their host. They possess incredible strength, making them one of the most formidable TV aliens ever seen.

The Klingons

Of all the TV aliens ever seen, the Klingons from the Star Trek franchise are by far the most well-known. The Klingons made their very first appearance in Star Trek: The Original Series in 1967 and since that time has been a thorn in the side of the Enterprise and Captain James T. Kirk (William Shatner). As seen in the Original Series, Klingons were a ruthless bunch who did nothing to hide their brutality. They were the perfect enemy.