Dr. Polaris aka Dr. Neal Emerson spent his post-doctorial life doing research on magnetism and made medical breakthroughs. However, Emerson suffered from a split personality syndrome and his darker personality eventually took control. As Dr. Polaris, Emerson used his technology to allow him to manipulate magnetism and commit crimes. Dr. Polaris uses his magnetic devices to allow levitation, force fields, concussive blasts, attraction and repulsion. Despite the power, Dr. Polaris is considered a second rate villain.
While stealing gold, Dr. Polaris was opposed by Batman. Batman overwhelmed Polaris by activating the self-destruct protocol on his utility belt.
Dr. Polaris later teamed up with Owlman to kill the world's heroes but was defeated. He was imprisoned at Blackgate Prison with the rest of Owlman's allies. Months later, Polaris escaped and appeared in Blue Valley, Nebraska being chased by the Green Lantern, Hal Jordan.