Dr. Victor Fries was a mere Gotham City scientist who used cryo-stasis technology to cryogenically freeze his wife Nora, who had a rare disease, so he could have more time to save her. However, an accident in the laboratory caused his body temperature to revert to below zero and as a result, he was forced to wear a refrigeration suit to survive the mutations. Fries then deemed himself "Mr. Freeze" and staged robberies in order to fund his project. He also stole diamonds in order to power up his suit. In addition to his cryotechnic genius, Mr. Freeze wields an ice-powered gun that freezes targets. He is primarily an enemy of Batman.