Jack Black has been cracking up audiences as Po the panda, a kung fu master who fights for good, since 2008, and he's not stopping any time soon. The action-packed animated franchise is now on its fourth installation — that's not counting the short films, animated series, holiday special, and string of video games — and it's still keeping things fun and fresh. In Kung Fu Panda 4, Viola Davis, Awkwafina, and Ke Huy Quan join the already stacked Kung Fu Panda cast for Po's latest adventure.