Batman himself states that Mr. Freeze's armor only needs one diamond to keep him at sub-zero temperatures. Unfortunately, Mr. Freeze wants more simply because they make him more powerful ...

1959 Batman #121 story, “The Ice Crimes of Mr. Zero”, written by Bill Finger ... a scientist would require a gang of thugs to build a freeze gun for anything but mischief.

When he first appeared in Batman ... 121, Mr. Freeze was very, very different from the love-driven monster we know today. In fact, he wasn’t even called Mr. Freeze, he went by Mr. Zero, an ...