These little terrors are one of Dr. Dejection's many private armies of soul-destroying evil. They are the opposite of all that the traditional idea of Cupid is supposed to represent -- they are old, scrawny, blue, and armed with blunt lead arrows sufficient to cancel all love in a person's heart. They are the storm troopers of despair, and the aerial soldiers of self-hatred.
By whispering their sinister propaganda into receptive ears, they can utterly destroy their target's self-esteem, thereby insuring that they shall never find that special someone, since it's a truism that you have to love yourself before you can love another. They are, however, cowards, and are easily routed by an aggressive display of force, even when present in great numbers.
The Matchman