Pascale Elfman and brother Danny Elfman (both of whom  performed with him in the Mystic Knights Of The Oingo Boingo theater  troupe); his grandfather Herman Bernstein plays The Old Yiddish Man;  and the brothers father Milton Elfman, appearing both as a factory  worker and a background singer. Hyman Diamond (who plays Grampa  Hercules), was Richard Elfmans real estate broker, appearing under  a pseudoynm after the original actor fell through. Two of Richard  Elfmans tenants from one of his real estate properties agreed to  make cameos, as girls going into the classroom. Actor/writer Matthew  Bright (a childhood friend of Danny Elfmans), and actor Gene  Cunningham (credited as Ugh