Fox's Scream Queens is adding to its already impressive cast. Co-creator Ryan Murphy announced Friday that Patrick Schwarzenegger has joined the horror comedy anthology. It's unclear just whom the young Schwarzenegger will be playing on the college-set series starring Jamie Lee Curtis. He joins a cast that also includes Emma Roberts, Skyler Samuels, Lea Michele, Diego Boneta and Nick Jonas. The role will be Schwarzenegger's first TV scripted gig. He's repped by Management 360 and Bloom Hergott. Scream Queens premieres September 22 at 8 p.m. on Fox.