Coily

Coilies are evil springs from every game in the Classic Trilogy. The jump around at random, except that they avoid Conveyor Belts and Ice at any cost. They can't jump high enough to jump on top of Boxes or Walls. They can be destroyed by Electricity, Spikes, Fireballs, and objects (that aren't Stinkers) coming at them from Ice or Conveyor Belts. They are mostly just annoyances, but can also be quite important to the puzzle.