https://en.wikipedia.org/wiki/Bacteriophage
A microscopic virus that injects bacteria with its own genetic material (it cannot infect animal cells), which will eventually cause the bacteria to start creating more bacteriophages and eventually explode(read: lyse) from producing more bacteriophages than it can hold. It has six legs and has a crystal-like organ known as the capsid; this capsid contains the genetic material that it will later inject into bacteria. Although bacteriophages cannot see or consume, it is typical that faces placed on an anthromorphic bacteriophage will be placed on the capsid.