Arkley made Zappo head in 1987, a major work that became something of an alter-ego for the artist. Zappo head has its precursor in Arkley's notebooks from 1977, where it appeared as a skull. (Zappo was also the street name for amphetamines.) Zappo head is like a mask comprised of various elements a stylised succulent on the forehead, pierced ears, eyes that pop out and an open mouth. It is part robotic, similar to a tattoo, and has obvious references to African and Pacific Islander masks, which had been widely used as visual references in the early twentieth century by artists such as Picasso.