A cryogenic experiment gone wrong permanently lowered Dr. Victor Fries’s body temperature, turning him into the sub-zero super-villain Mr. Freeze. Forced to wear a special suit to survive, the cold-hearted and nearly emotionless crook uses his scientific skills and freeze gun to bring a chill to Gotham City wherever he goes. Good thing Batman is always there to bring the heat! Bat-Fact: Originally called himself “Mr. Zero,” but thought it didn’t sound cool enough.