Hildy

DC Universe
Hildy, surname unknown, was a young blonde-haired woman who engendered the trust of Victor Fries, aka Mister Freeze, and became his assistant. She labored under the guise of a desire for immortality, and played upon Fries' innate loneliness in order to gain his trust. In truth, she wanted revenge against Freeze for a previous crime. When Mister Freeze captured Batman, he kept him frozen in place as one of his Ice Pack. Hildy began speaking aloud to the seemingly lifeless Batman, declaring that he was more of a man that Freeze ever could be. She also revealed her hatred and intent to betray Freeze. Victor heard this and turned his cryo-gun upon her. Batman, who had actually been playing possum up until this point, broke character and leaped forward to save Hildy. Unfortunately, Freeze's blast struck true and Hildy's entire body was frozen. What became of her following this affair is unknown.