Synopsis
Bad Grandpa .5 gives you a whole new perspective on the world of Irving Zisman with bonus scenes and pranks also featuring Spike Jonze as "Gloria" and Catherine Keener as Irving's wife "Ellie", plus a look at the evolution of Johnny Knoxville's naughty alter-ego, the makeup effects, and a behind-the-scenes peek at the idiocy it takes to make a hidden camera movie in public.
Cast

Johnny Knoxville
Irving Zisman / Self

Spike Jonze
Gloria / Self

Jackson Nicoll
Billy

Catherine Keener
Ellie / Self

Georgina Cates
Kimmie

Zia Harris
Chuck

Jeff Tremaine
Self

Trip Taylor
Self

Dimitry Elyashkevich
Self
J.P. Blackmon
JxPx Blackmon

Rick Kosick
Self

Jack Polick
Self
Carl Watts
TSA passenger

Tony Gardner
Self
Steve Prouty
Self
Knate Gwaltney
Self
Charles Grisham
Self
Joe “Oz" Osborne
Self
Donny Anderson
Self
Andrew Laboy
Self
Heather Brown
Self
Tom Heigl
Self
Seamus Frawley
Self
Derek Freda
Self
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