In Bernie and the Putty, the lookies had a harrowing encounter with two air angels.
The concept for air angels comes from two fish I used to have when I kept fresh water aquariums as a kid.
The first was an angel fish. They were remarkably thin, having evolved in waters full of reed-like blades of weeds. Their thin shape was perfect for maneuvering between the weeds. Their graceful nature, seeming to float in the water, was translated into the idea that a really light creature could do the same thing in air.
The second part of the inspiration for the air angels came from gouramis. What I drew from them was the way they used their remarkable ‘feelers’ to touch things and examine their surroundings.