Fehr, whose credits include Showtime's "Sleeper Cell" and an assortment of "Resident Evil" and "Mummy" films, will play the school's "overbearing artistic director."
Riabko and Schram ("Life," "Veronica Mars") will play aspiring actors auditioning for the academy.
Gray-Cabey, best known as Micah from NBC's "Heroes," was also a regular on ABC's "My Wife and Kids" back in the day.
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