Hummer

Hummers, also known as Mothbats, are flying creatures from Silent Hill 4: The Room and Silent Hill: The Arcade. They usually show up in swarms and attack Henry Townshend on sight.

Appearance
They appear as small, black mixtures between hummingbirds and bats. Their bodies are much like that of a bat, though they have long, needle-like beaks similar to those of hummingbirds. In addition, their wings flap extremely quickly, making a buzzing sound as they dart about, making their presence easy to detect.

Character
They are not particularly dangerous alone, merely doing tiny bits of damage to Henry; however, in swarms or in conjunction with other foes, they can be quite irritating. Dealing with them is simple, as Henry can merely swat them out of the air and stomp on them to finish them off. If not crushed, they will quickly recompose themselves and begin flying again, though. They are the only creature that the bug spray seems to have any kind of effect on.

Symbolism
Hummers are likely representative of pests, given their persistence in pursuing Henry, their appearance, and the creature's sound. Them coalescing to pester him at once also supports this, and they are easy to dispose of with a single strike. Walter Sullivan's psyche bore symbols of filth and disgust for the world around him, and these small creatures are likely an example.

Trivia

 * Walter Sullivan will attack a Hummer if one is near him. This can be helpful to distract Walter while Henry is trying to get away or looking for doll parts during Henry's second visit to the Forest World.
 * When hurt, Hummers will make a sound similar to that of a Pendulum from Silent Hill 3.