usually rely more on makeup prosthetics
than Aliens. The earthborn humanoid forms of many monsters
lend themselves more readily to makeup effects.
This process usually involves:
making lifecastings of actors.
sculpting forms over the life castings.
application and seamlessly blending appliances of foam
latex, gelatin and silicone rubber onto actor's faces and
Custom wigs, gloves, teeth appliances, claws and scleral contact
lenses can enhance the inhuman qualities of monsters.
Monsters do not have to be limited to humanoid forms however;
such as our giant killer dandelion, giant Blobs, King Kong
skull or T-Rex jaws.