Using a combination of science and magic, Dr. Oonagh Mullarkey split the good and evil parts of her personality in an attempt to gain more power. Originally placed into a lifeless protoplasm, the good half developed into the life form Plasmer, a shape-shifting superhero – while the evil half remained in Dr. Mullarkey.
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Plasmer would eventually journey alone on a path of self-discovery, where she would meet Jack Smithers. He would reveal her evil was attempting to unleash a group of Sleepers in an attempt to destroy the world. With the help of her allies, including the Silver Surfer, Plasmer would defeat all the Sleepers.
