General Ratar-O

Ratar-O is a rat-like general in the Mutant armies. This portly rodent is considered the most cunning and evil of all the Mutants. He comes to Third Earth at the behest of the Vultureman to aid them in defeating the Thundercats. His flagship the Ratstar is a powerful war machine. Though it crashes, Ratar-O salvages parts to make a Mutank to continue the fight. He is strong and wields the Rat's Eye (a pair of kris-style daggers which have two mystical gems embedded in their hilts) that he can use to fire energy blasts, levitate foes and even fly through the air. Ratar-O is a descendant Ratilla the Terrible (the former holder of the Sword of Plun-Darr).

In the 2011 Animated Series, Ratar-O is the dictator of the Rats, a descendant of Ratilla who found the Sword of Plun-Darr after the Animals ended up on Third Earth. While under Mumm-Ra's services, the Rats served as janitors within the Black Pyramid before ending up scavengers on Third Earth. Though Ratilla used the item to turn his people into a power equal to the Thundercats, the Sword of Plun-Darr corrupted his mind before Jaga is forced to kill him in order to seal the weapon away in what becomes Mount Plun-Darr. As the weapon's whereabouts are unknown to Mumm-Ra, Ratar-O buys the Thunderian survivors from the Lizards to use as slaves to mine for the Sword of Plun-Darr and obtain it for him due to the curse Jaga placed on it that kills any who attempt to retrieve it. When the Thundercats raid Mount Plun-Darr as Tygra and Cheetara pose as slaves to get the sword, Lion-O's group are captured by Mordax and turned over to Ratar-O. But once Tygra and Cheetara found the Sword of Plun-Darr, it caused much of Mount Plun-Darr to collapse with Ratar-O's palace destroyed in the process. Following the castle collapse, Ratar-O battles Lion-O who manages to defeat Ratar-O as he retreats underground.