Man-Bat Serum

The Man-Bat Serum was a revolutionary gene-manipulation process, which was developed by Dr. Kirk Langstrom. The original intention of its creation was to cure humanity of loss of the human body's hearing factor. However, it had an unfortunate side-effect as the recipient of the serum would not only be cured of their hearing loss, but would also heavily mutate into a humanoid bat-like creature. As an additional downside, the victim's clothing is destroyed, due to the membrane of the wings.