About 10 or so years ago, I remember watching a movie where there was this planet inhabited by a race of aliens. The boss alien, a big green thing, would often dip the smaller aliens in liquid nitrogen or some other deep-freezing agent if they displeased him. I don't remember much more.
I think this is Space Chimps from 2008.
Zartog is the big green villain who freezes those who displease him by dipping them in Freznar and turning them into statues.
From Alien wiki
After the unmanned NASA space probe Infinity is pulled into a wormhole, it lands on a planet called Malgor, and is discovered by Zartog, a grumpy and wicked alien who likes to torture and kill animals for his amusement by dipping them in a substance called freznar, turning them into statues. From the probe, Zartog learns much about the culture of Earth and wants to live like people. After discovering how to operate the probe, Zartog uses it to enslave the population and puts them to work, building his palace to resemble a casino. Those who resist are dunked into freznar, and decorated as statues in front of Zartog's palace.