PA: Viewer discretion is advised.

HAPPY DAYS ARE HERE AGAIN FOR THE GRIFFINS ON "FAMILY GUY" SUNDAY, APRIL 16, ON FOX

When Peter's dad visits the Griffins, he tries to impose his religious beliefs on the family. But after a mishap leaves Stewie stuck living in a bubble, Peter searches for a new religion finding faith in his television hero the Fonz. But "Happy Days" are not quite here as the newly established Church of the Fonz struggles to retain its members on "The Father, the Son and the Holy Fonz" episode of FAMILY GUY Sunday, April 16 (9:00-9:30 PM ET/PT) on FOX. (FG-422) (TV-14 D, L)

Voice Cast: Seth MacFarlane as Peter Griffin, Stewie Griffin, Brian Griffin, Quagmire; Alex Borstein as Lois Griffin; Seth Green as Chris Griffin; Mila Kunis as Meg Griffin; Mike Henry as Cleveland and Cleveland, Jr.

Guest Voice Cast: Gary Cole as Bill Lumbergh, Man at Door and Priest; Lori Alan as Diane; Phil Lamarr as Doctor and Parishoner #2; Danny Smith as Father Karras; Chris Sheridan as Fish, Judge and Man; Charles Durning as Francis; Danny Smith as Gnome #1 and Parishoner #3; Amir Talai as Hindu man, Hippie and Wedding Priest; Sherry Romito as Joanie, Nancy and Young Wife; John Viener as Mr. Cates and TV Announcer; and Ralph Garman as Parishoner #1.