Ratão

Ratão is the main antagonist in the Disney's animated television series, Rat TV.

Biography
Ratão is a rat who mutates into becoming a mob boss with his Brazilian accent, and plans to rob a bank by replacing all the money in the bank with cheese (which is basically why he interferes with the mission).

Ratão was first seen, placed on duty in the laboratory, but escaped and stole money to threaten the world to rid itself of television, and the Air Base was evacuated, but Cake and Ziff were separated from their parents and decided to stop Ratão. The police searched for Ratão, but were unable to locate him.

That night, Ratão was broadcasting from an airship and was able to evade capture easily. However, Ratão discovered that Paul the Clown began televising himself from a fallout shelter in the desert. This outraged Ratão, but not before Cake and Ziff tracked him in the cockpit. Angry, Ratão attempted to detonate the A-bomb, but it turned out to be a dud and did not explode. Cake quickly used the airship's electronic ticker to send a message to the police. When the humans tried to capture Ratão, Ratão kidnapped Ziff and deflated the airship. The nefarious rat then stole the Wright Brother's plane to escape and crash into the apartment. However, Ziff freed himself and Ratão crashed the plane near the apartment.

Then, Ratão's true colors is revealed that he plans to rob the Bank, and replace the money with the cheese puffs, this attract Cake's attention. When the police arrives, Ratão tries to escape, but is accidentally shipped to Antartica.

Trivia

 * The reason that Ratão was the main antagonist of the series is because he wanted to rob the Bank, replace the money with cheese puffs, and make the humans rid the world of television, thus turning them into "cannibals".
 * Norvirus Ratão is also incredibly similar to Sideshow Bob from The Simpsons. Both of them are the archenemy of the child protagonist and both have also attempted to hurt/kill their family, although Norvirus is far worse as he also targets Cake and Ziff, and is more serious than Sideshow Bob.