Gidney and Cloyd are "Moon Men", inhabitants of Earth's Moon. Both Gidney and Cloyd possess the ability to disappear and reappear at will; they can disappear completely, but at times their eyes, and/or Cloyd's mouth, may remain visible (in the manner of the Cheshire cat's smile). The Moon Men appeared in Jet Fuel Formula, the first Rocky and Bullwinkle story arc, broadcast 1959-60. In this story they come to Earth in an attempt to thwart a rush of tourists to the Moon, only to become media celebrities themselves. They initially succumb to the temptations of fame but soon tire of it. (In Cloyd's words, "It's all so wonderful we can't STAND it anymore!") With the help of Rocky and Bullwinkle, they are eventually able to get home. Gidney and Cloyd return in the second-season story arc, Metal-