Sterling K. Brown On Why 'Black Panther' Will Hit Fans In Their 'Soul' (Exclusive)

Plus, the 'This Is Us' star also opened up to ET at the Critics' Choice Awards about his upcoming guest-starring role on 'Brooklyn Nine-Nine.'

Sterling K. Brown is promising Black Panther will be a deeper experience than your typical Marvel movie.

ET's Cameron Mathison talked to the This Is Us star and his wife, Ryan Michelle Bathe, on the Critics' Choice Awards blue carpet Thursday night, where the 41-year-old actor revealed what the film will provide in addition to what fans have come to expect from the studio when the movie premieres on Feb. 16.

"They ain't ready bro!" Brown exclaimed. "You're going to get all the bells and whistles that you get from a Marvel film -- but the message, like, they aren't even ready for the message."

"It's going to hit people, like on the entertainment value and then on a soul level," he added. "This movie works on all levels. It's beautiful."

During the discussion, Brown also opened up about taking a comedic turn in his upcoming guest-starring role on the Fox cop comedy, Brooklyn Nine-Nine.

"A little comedy for yours truly," he laughed. "[It was] a pleasure because we watch it as a family. It's like the one kind of adult show we let [our son] Andrew watch because it's so big and it's so broad and we laugh really hard."

And Brown shares a connection with Andre Braugher, who stars on the show. In addition to both being Stanford-alumni, at last year's Emmys, Brown won Best Actor in a TV Drama for This Is Us, becoming the first black actor to do so since Braugher, who won in 1998 for Homicide: Life on the Street.

"I had a great time. All of my scenes were with [Andy] Samberg and Mr. Braugher, and to spend time with him, being the two last African American males to win the Emmy for Best Lead Actor in a show, it was amazing," Brown explained. "You don't get mentors in this business all the time so to have someone whose traversed the path before me and has wisdom to share with me, we had a wonderful time just being in each other's presence."

At Thursday's CCAs, Brown has a chance to win another Lead Actor in a Drama series award, as he's nominated for This Is Us.