Pearman commissioned the making of a series of fake-fur yeti costumes, one for each member of his family of four.
As the invisible man can be called a monster of science and his own ambitions, the Yeti, (or Big Foot or Sasquatch), is a monster of nature and a cultural abnormality.
The Yeti presumably has a natural family, however we view him as unnatural, perhaps because he is an evolutionary freak.
Pearman also makes a direct reference to the famous questionable hoax Yeti footage shot by Roger Patterson and Bob Gimlin in 1967 by showing his six year old daughter posing in a similar stance to Petterson's Yeti and situated in a forest by a fallen tree.
Related link 
http://www.youtube.com/watch?v=a95uEYlqA4o
Pearman attempts to draw similarities between the Invisible Man and the Yeti as shown in his expandable foam filled jacket, by positioning it to resemble the above-mentioned Yeti stance.
Details regarding these artworks can be found:
Related pages 
Ongoing Artworks.