Their amorphous bodies can turn invisible at will, though this ability appears somewhat negated by whistling noises associated with them in general.
The Invisible Pink Unicorn (IPU) is the goddess of a parody religion used to satirize theistic beliefs, taking the form of a unicorn that is paradoxically both invisible and pink.
One morning, a schoolboy named John awakes to find an invisible giant sitting at the foot of his bed.
He can will himself into an invisible immaterial state and in said phantom form fire destructive bolts of pure "radiation-free" atomic energy from his hands and fly at the speed of light as well as quickly heal himself of any injuries received in his mortal flesh and blood form.
In the Percy Jackson & the Olympians series by Rick Riordan, Annabeth Chase (a Daughter of Athena) received a New York Yankees baseball cap from her mother that was a disguised cap of invisibility.
A prototype Metascreen is a claimed invisibility cloak, which is just few micrometers thick and to a limited extent can hide 3D objects from microwaves in their natural environment, in their natural positions, in all directions, and from all of the observer's positions.
Cloaking device is a technology for partial or full invisibility to parts of the electromagnetic spectrum.
The film deals with invisibility of human being and is quite similar to H.G. Wells' The Invisible Man
The women wore horse tails and discussed the works of Frank Stella at an exhibition opening, satirizing the invisibility of women artists.