Allien costume
The allien character began as just a 2D drawing what kept adapting to a real life authentic allien. to produce this character they used many kinds of software such as making the jaw and mouth movement of teh allien more detailed and to make the teeth of the allien to glow and stand out.

Terry Notary
Terry Notary is the man who plays the allien character in the film. He is the fastest man in the UK to run on his hands and feet. From the dvd we found evidence that the actors actually ran as fast as they could when running away from the allien due to the fact how quick he was.

Noises of the allien

the echolocation noises made by the creatures were a combination of dolphin sonar mixed digitally with the grunts and snarls of dozens of other animals, and even a woman screaming.[