It's such a great little touch that after Batman makes sure Freeze doesn't die from exposure, he tosses the freeze gun away in disgust since it's...well, a *gun.* Helps that this particular one looks like any old handgun, which probably gave some bad flashbacks.
@@charlottestreet3301 You mean the black iris and white pupils...? That is his design from the 1st season of The New Batman Adventures, the continuation to Batman The Animated Series