character was impersonating one of the lead characters. She was listed as "Special Guest Star" rather than "Guest Star." Also on Star Trek: Deep Space Nine, Frank Langella declined to be credited in three episodes despite playing a central guest role. He did not want to give the impression he had taken the role for money or exposure, as he had actually taken it to please his children. In the opening of 1931's Frankenstein, the credit for "The Monster" is a question mark. Boris Karloff is named in the closing credits. Ashton Kutcher appears as Hank in the 2003 family comedy Cheaper by the Dozen and is uncredited, although he is one of the film's main characters. In the 1974 film Earthquake, Walter Matthau agreed to provide a cameo performance without compensation on the condition that he not be credited under his real name; he was credited under a fictitious name of his choosing, "Walter Matuschanskayasky". Because he played the part without pay, Bruce Willis is not credited for his prominent role in the portion of Four Rooms directed by Quentin Tarantino. Owen Wilson does not receive credit for his "Jedidiah" character in Night at the Museum, though he receives credit in the sequel, Battle of the Smithsonian. John Wayne was billed as "Michael Morris" in two cameo television appearances directed by John Ford, an episode of Wagon Train titled "The Colter Craven Story" and an anthology installment called Flashing Spikes starring James Stewart. Wayne's real name, before it was changed for the 1930 widescreen film The Big Trail, was Marion Michael Morrison. For his cameo appearances in Cabin Boy and Beavis and Butt-head Do America, David Letterman was billed as "Earl Hofert". In Interstellar, Matt Damon's casting was kept secret during production, and he is not credited in the film. This was a deliberate decision by the director Christopher Nolan, as he uses the audience's familiarity with Matt Damon as a 'good guy' actor to hide his character's true intentions. David Hyde Pierce declined to be credited for his voice-acting role in Hellboy because he felt it was the physical performance of Doug Jones, and not his own voice, which ultimately brought the character of Abe Sapien to life. Other unbilled roles feature famous actors or actresses who pop up in a movie as a face in a crowd, a man on a bench, or other 'background' characters, who