Human disguise

A human suit is a costume, disguise intended to disguise a non-human such as an alien as a human being. The idea occurs in science fiction.

The idea that aliens might be on Earth, disguised as humans, is a common theme in science fiction, occurring in works such as Men in Black, Galaxy Quest, The Thing, Star Man, V, They Live and Third Rock from the Sun. The mannerisms of the aliens are often portrayed as awkward, indicating that the aliens are not comfortable in their false skin.