The Zillo Beast is the last of its kind. It lived on the planet Malastare until the Jedi brought it to Coruscant where they tried to take off its impenetrable scales for armor for their clones after successfully putting it to sleep with a special beam. It soon escaped and ran wild around Coruscant. It had only one goal- to kill Chancellor Palpatine, for it was he who imprisoned it. The clones turned its only weakness a certain type of acid into a gas bomb the clone pilots then surrounded the zillo beast fire their bombs and thus killed the Beast.