
Now, I am not going to include The Doctor because well, in my opinion no alien, no matter how weird, evil, inventive or quirky, could ever beat him. So instead I am going to look at the aliens The Doctor comes across on his travels, and why they are on my top 10 list.

The Flood originated from Mars and featured in the episode The Waters of Mars. They are a viral species that originated from one of the planet’s glaciers. They gradually infected the whole of the crew of Bowie Base One, except for Captain Adelaide Brooke. The Flood are in my top ten because they thoroughly creep me out. The fact that they are infections makes it worse because you can’t actually see them, and that is terrifying.
Starring in The Girl in the Fireplace, the Clockwork Droids served on the SS Madame de Pompadour in France during the 18th century. Their primary purpose is to fix the ship. However they started using human body parts in order to repair the ship as they lacked mechanical parts. Their faces are utterly disturbing. And I would hate to have an 18th century robot chasing me for my liver.

The Ood, in my opinion, are one of the nicest races and perhaps one of the most misunderstood. Enslaved by humans they led an awful life under the commandment of arrogant, lazy and disrespectful owners. They then begin turning rogue with “Red-Eye,” only wanting to be free from slavery. They appeared in many episodes after their first appearance in The Impossible Planet and, despite what they had previously gone through, remain extremely mild-mannered and polite.

Now everyone loves Captain Jack. His sassiness, his humour, the fact that he can’t die… But I am much more interested with his Face of Boe side, purely because I am curious as to how he is finally able to die after so many thousands of years of life. Plus he seems to have inherited some very useful information (he told The Doctor that he was not the only Time Lord left. We later find out about The Master, and The Doctor also creates a daughter, Jenny.) The Face of Boe always fills me with complete wonder and awe. There’s just something about him, he is so different from the Jack we all know and love.

The Vashta Nerada are one of the just plain scary aliens that feature in New Who. First seen in Silence in the Library, they live in swarms and could strip a body to the bare bone. The only way you could escape was to stay in the light as they swarmed in darkness. I will admit that for nights after this episode aired I struggled to have the light off at night. I didn’t want to end up as a skeleton devoured by shadow piranhas.

What makes these so terrifying is their ability to make you forget they are there. You know that something has happened, that time has passed, but at the same time you don’t. I find this an extremely clever and admirable thing to be able to do, but if they were real I would always be in near-panic. I would never really know if I had seen them or not, and that makes them all the more deadly. You should be more concerned if you randomly find tally marks on your person.

There always seems to be a battle as to which is better, the Cybermen or the Daleks. In my mind, the Daleks are the better alien species. However I like the Cybermen mostly because of how they're created. Putting human brains into a suit of armour, meaning they have no emotions as they are seen as a weakness. However their weakness is that they have to physically touch you in order to “delete you” whereas with the Daleks you just have to be within shooting distance.

The Daleks have been around since the start, and fought against the Time Lords in the Last Great Time War. Their creator, Davros, was thought to have been killed but returns in a later series against the 10th Doctor. The Daleks are also devoid of emotion, and although they appear to be fully robotic, they are actually cyborgs, much like the Cybermen. It is their rich history in the fabric of Doctor Who and their, as far as I am concerned, better weaponry, that puts them above the Cybermen.

Now I do feel a bit guilty for putting them on my list. They are after all atoms created in order to help people. But unfortunately, by one massive mistake, they created the horrors of two episodes that would scar me for years. The Empty Child and The Doctor Dances saw the creation of the Empty People, who become infected with the nanogenes and have a gas mask bound to the face. As a child, their appearance absolutely terrified to me, and the episodes were the scariest I have ever seen. I could not go near a World War Two exhibit for months afterwards.

My top alien of all time has to be the Weeping Angels. First seen in the episode “Blink” they at first appear to be mere statues, however when you look away they move. They are actually quantum-locked humanoids (fancy talk) and they appear in many episodes after their first, most recently The Angels Take Manhattan, with the appearance of a generous angel and ends with Amy and Rory being trapped back in time. Not being able to blink infront of a statue since their first appearance, they have had an everlasting effect on me, and the fact that they seem so harmless but yet are so deadly is one of the many reasons as to why they are at the top of my list.
Don’t blink.
Blink and you’re dead.
Don’t turn your back.
Don’t look away.
And don’t blink.
Good Luck