This Zillo Beast was the last member of its kind. In 21 BBY, it was awoken by an electro-proton bomb used by the Galactic Republic during the Battle of Malastare, against the Confederacy of Independent Systems's battle droid army. It was subsequently stunned by a group of RX-200 Falchion-class assault tanks, after the beast rampaged and destroyed many Dug tanks and Republic vehicles. The Republic transported back to their capital world Coruscant to be studied by Doctor Sionver Boll, but it broke free and began to ravage the surface of Coruscant, even coming close to killing Chancellor Palpatine in the process. As such, the Republic was forced to put the beast down.
- Star Wars: The Clone Wars – "The Zillo Beast" (First appearance)
- Star Wars: The Clone Wars – "The Zillo Beast Strikes Back"