Leader

Leader is the main antagonist in the 2017 adult animated film, Cats and Mice. He is a lemur, with a cat's disguise, who deceive the cats and tries to steal the trophy away for profit.

Biography
Leader was first seen, steals the trophy due a fondness for it, which causes great tension between the cats and mice (which led to accusations of cheese theft), and tries to create a new plan to make the humans allergic to cats, thus allowing the rats and mice invade every neighborhoods, and finally sway the humans from learning the truth. Leader was offered money if the mice lost the fight against the cats, but since Rat won, this got Leader upset.

He later removes his cat disguise to reveal for what he truly is, a lemur, who escaped from the zoo earlier. That night, he also presumably killed Tina Fey and Alec Baldwin following this incident.

At the factory, Leader summoned thousands of mice to work for him, thus abusing them. Just then, Lou, Butch, and the other dogs arrived just in time to stop Mr. Tinkles. Leader rode on a crane and used the claw as a weapon. He caught Butch and attempted to crush him in the shredder, but Lou defeated him by firing a snow gun at him and was presumed dead when the factory blew up. However, he survived the blow-up, only to be exposed as a fraud, tries to escape and flies away on a hang-glider.

Trivia

 * Althrough he is the main antagonist, he did not want the mice to win, and even though he authorizes the wrestling, he still had the cats beat him up.