Mr. Freeze is perhaps one of the most fascinating villains in the Batman Universe. He is detached, inexpressive, and like his name implies, cold. And yet, Mr. Freeze is inexplicably lifelike and relatable. "Heart of Ice" is arguably one of the most influential stories from Batman: The Animated Series because of this well-written origin story. After of the sudden, devastating loss of his wife, Nora, scientist Victor Fries transforms into Mr. Freeze, a vengeful killer, willing to harm anyone who steps in his way. But there is more to this tragic story. Under the subzero suit is a person burdened with unrelenting pain and sorrow. In this episode, we discuss the difficulty of dealing with loss and letting go, and explain how being "frozen in grief" is a very real thing.