The Snow Flinx is a monster that first appeared in Comic 349 and last appeared in Comic 352. They were found in under the ground in the ice caves. They attack their prey by rolling over it in large masses. They are first encountered by Goblin Tinkerer, who thinks that they are some kind of snow formation..
They apparently sleep in a "nest" and make a large popping sound when they wake up. They will make the sound "prrrl" and look friendly, but they are actually hostile monsters.