Morbius, The Living Vampire

Dr. Michael Morbius, a Nobel-winning scientist dying of a rare blood disease, attempts to find a cure by experimenting with vampire bats. His attempt fails, until he tries activating the bat enzymes with electrical shock. The results are instantaneous — by the time the electricity has finished coursing through him, he has super strength, chalk-white skin, and sharp fangs. He also has an intense craving for blood to replace what the disease was eating away, so his first act as a "pseudo-vampire" is to kill his assistant. Sated, he reverts to human form, appalled by what he'd done.

Morbius struggles with his blood-lust, but is unable to overcome his thirst for blood. He has run-ins with Spiderman,the Human Torch and Blade, the Vampire Killer. Meanwhile, Morbius continues looking for a cure for his condition. After finally finding a cure, he is represented by She-Hulk in court and receives a light sentence for his multiple murders. Unfortunately, Morbius discovers later that the cure merely puts his disease into remission.