The latest “Kung Fu Panda 3” movie spoilers revealed that Po (Jack Black) will be facing two very different challenges in the highly anticipated sequel. The beloved hero will be faced with a meaner and much bigger villain Kai, voiced by J.K. Simmons.

"Kai is somebody that's beyond Tai Lung, beyond Shen," said co-director Jennifer Yuh Nelson to USA Today.

Simmons shared that he has played the bad guy in several films before. The veteran actor shared that he is very much excited to lend his voice to Po's rival.

"I've played a variety of badasses in my career," he told the publication. "I do like to mix it up. I like being a character actor playing different kinds of guys. Or, now, different kinds of beasts."

The actor, however, shared that he experienced quite a using different tones to convey his character's emotions.

"You have to find the nature of the beast that Kai is," he told the publication.

"There's a lot of vocal stuff I'm throwing out there that's somewhere between dialogue and animal growls when Kai snorts."

"The voice can get a little ragged at the end of the day when you are making strange animal noises that you don't normally make."

"Kung Fu Panda 3" movie spoilers revealed that Kai has a longstanding feud with Master Shifu (Dustin Hoffman) and the Furious Five warriors: Tigress (Angelina Jolie), Monkey (Jackie Chan), Mantis (Seth Rogen), Crane (David Cross) and Viper (Lucy Liu).

"Let's just say Kai has been away. Now that's he's back, he's not happy about life in general. One thing he finds when he returns is that pandas make him particularly unhappy," Simmons said.

The actor, however, said that fans will definitely love the villain's dark sense of humor. He said that it's definitely something that would set him apart from Po's other rivals.

Tune in for more "Kung Fu Panda 3" spoilers, news and cast updates.