Scream 6 adds Dermot Mulroney in its latest casting news. Beavis and Butthead enter the Multiversal bandwagon in a new clip from Beavis and Butthead Do the Universe. Bandai wants Iron Fist’s M. Raven Metzner to bring Tiger and Bunny to live action. Plus, another delightful tease for the return of What We Do in the…