Zillo Beast

The Zillo Beast, sometimes referred to simply as "the Zillo," was a non-sentient, reptilian species endemic to the planet Malastare. The Dugs believed this gargantuan creature to be extinct long before 21 BBY; during the Battle of Malastare, however, the seemingly last specimen alive was inadvertently unearthed by an electro-proton bomb used by the Galactic Republic.

Supreme Chancellor Sheev Palpatine sought to use the Zillo Beasts' indestructible hide to aid the Grand Army of the Republic. Shortly after the creature was brought to Coruscant for study, however, it broke free from its restraints and rampaged through the capital. In the end, the Jedi and Republic army were left with no other choice but to kill the Zillo Beast using a powerful toxin, the same one that had compelled it to ravage Coruscant, but in larger doses. After the creature was killed, Palpatine ordered it to be cloned. All cloning attempts failed until after the formation of the Galactic Empire and the appropriation of Kaminoan cloning technology, when doctor Royce Hemlock finally succeeded in achieving a breakthrough and successfully cloning several beasts which were transported and contained in the Tantiss Base inside Mount Tantiss.

One Zillo Beast lived in Wild Space where it was worshiped as a god by the Benathy, though it was later killed by Kylo Ren, Master of the Knights of Ren and a warlord in the First Order.

Text and facts from the “Zillo Beast” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.