Mr. Freeze

Victor Fries is a former Cryogenic scientist who worked at GothCorp. As a child, Victor was obsessed with cryonics, and made a hobby of freezing animals to preserve them in fear that they would die. His parents were horrified by his unusual habit and sent him to an extremely strict boarding school where Victor was miserable and felt dethatched from all humanity. In collage, Victor met the love of his life, a woman named Nora, whom he eventually married.

Less than a year after marrying Nora, she became sick and was dying. In a desperate attempt to save his wife's life, he began to work at GothCorp run by the evil Ferris Boyle. Since Victor couldn't find a cure fast enough for Nora, he found a way to place her in cryostasis to keep her from getting any worse.

When Ferris found out that Victor was still working on cryogenics which Ferris suspended work on a while ago because it put him $3 million in debt, Ferris goes in with several security guards to stop Victor personally. But Victor takes a gun from a security guard and points it at Ferris, telling him to stay away from his wife who he was preserving through cryogenics. Victor standing up to his evil boss didn't go well, which led to gunfire and chaos going on in the lab. This lead to chemicals and cooling liquid pouring all over Victor as he was trying to save his wife.

Ferris and his goons escape but not Victor. Victor survived the accident, but the chemicals that poured all over him lowered his body temperature to the point where he could only survive in sub-zero temperatures. He made a cryogenic suit in order to survive, along with his freeze gun, in order to get revenge on those responsible for his wife's death, and became Mr. Freeze. When he went to get revenge on Ferris Boyle as Mr. Freeze, Ferris tries to make a deal by saying he saved his wife's body and she was his if he let him go. But Freeze just froze him with his freeze gun.

After this, Batman came in to stop Mr. Freeze. Over the years, Batman and Mr. Freeze have faced off many times. due to Mr. Freeze's need to steal diamonds to power his cryosuit which keeps him alive and to afford the equipment needed to cure his wife. He is set apart from other Gotham criminals because he only commits crimes to bring his wife back.