That '90s Show is an American television period sitcom which is a spinoff to That '70s Show. It aired on Fox on March 7, 2020. The main teenage cast members were Sierra McCormick, Grant Palmer, Jessica Belkin, Millie Bobby Brown, Joey King, Madisyn Shipman, Skai Jackson, Mason Cook, Isaak Presley, and Zachary Callison. The main adult cast members were Blake Lively, Anthony Michael Hall, Alyson Hannigan, Freddie Prinze Jr., Susan Egan, and Brian Stepanek.