Billy Gray and Dan Kopp have appeared together in 1 film in 1971. Every shared film with year, roles and gross, plus who else each works with most.
| Year | Film | Box office |
|---|---|---|
| 1971 | Werewolves on Wheels |
Billy Gray also often with: Billy Gray (10), Lloyd Corrigan (3), Alan Hale Jr. (2), Almira Sessions (2), Arthur Space (2)
Dan Kopp also often with: Anna Lynn Brown (1), Barry MacGuire (1), Bart Smith (1), Carl Lee (1), Donna Anderson (1)