RX - 200 Falchion - class assault tank / Canon The RX - 200 " Falchion " - class assault tank , also known as the Mobile Ion Cannon , or as the stun cannon tank , or simply the Republic stun tank , was a model of tank used by the Grand Army of the Republic during the Clone Wars . Its stun cannon allowed it to drain targets of their energy , rendering them useless . There were multiple stun tanks at the Battle of Malastare and they were used to incapacitate the Zillo Beast . Characteristics . The RX - 200 " Falchion " - class assault tank , also referred to as the stun cannon tank , Republic stun tank , or stun tank , was a tank manufactured by Rothana Heavy Engineering and utilized by the Grand Army of the Galactic Republic . The stun tank ' s design was an extension of the technology utilized in the SPHA - T , another Republic vehicle . It was equipped with an ion cannon that drained the energy from targeted vehicles , as well two antipersonnel blaster s . Both the blasters and the ion cannon were situated on a turret in the rear of the vehicle . The viewport and cabin were located in the rear of the tank , and was protected by a heavily armored hull . Because the ion cannon disabled aerial vehicles , there was the risk of the powerless aircraft crashing into the tanks themselves or other Republic ground vehicles . The stun tank measured at 28 . 6 meter s in length , and as a repulsorcraft , could reach speeds of 90 kilometers per hour . The stun tank was crewed by at least two clone trooper pilot s , and could accommodate at least two passengers . Located above the viewport and cabin were to entry hatches . Role . The RX - 200 " Falchion " - class assault tank served primarily as an anti - aircraft and artillery vehicle , and although being designed to be used against droid vehicles , the stun tank was seldom utilized during the Clone Wars . History . The stun cannon tank saw use by the Grand Army of the Republic during the Clone Wars against the Confederacy of Independent Systems . During the Battle of Malastare , the stun tank was utilized as anti - aircraft weapons against " Hyena " - class bombers and Vulture starfighters . After a BTL - B Y - wing dropped the Republic ' s new superweapon , the Electro - proton bomb , on Separatist forces , the entirety of the droid army was disabled . In the direct aftermath , however , the ground sunk and awoke a hibernating Zillo Beast , and after determining that the creature should be saved to study it , stun tanks were deployed to induce it in a deep sleep . Although during the operation several stun tanks were destroyed , the Republic efforts were successful , as the ion cannons of the stun tanks tapped into the beast ' s nervous system . After the Zillo Beast was transported to Coruscant for scientific research , and managed to break free from the Republic Science and Technical Center , resulting in a rampag through Galactic City , stun tanks were once again deployed to subdue the beast . The tanks , working in conjunction with LAAT / i equipped with gas bomb s , succeeded in defeating the Zillo Beast , killing it . Behind the scenes . The stun tank first appeared in The Zillo Beast , the eighteenth episode of the of the animated TV - series " " and released in 2010 . The " Zillo Blaster " was a stun tank that was cut from the series .