Animated World of DC Comics: Batman vs. Mr. Freeze (1968)
Having been portrayed by three different actors during the three seasons of the live-action Batman, Mr. Freeze makes the first of two appearances in the 1968 animated series, voiced by Ted Knight. On a hot summer day, Mr. Freeze begins freezing Gotham City's water, then steals a whale. Check out Batman's 1st animated bout with "The Cool, Cruel Mr. Freeze":
If anything, the 1992 series made Freeze more of a sympathetic character, expanding and retooling his origins to better explain his unique condition.