Question: Which character did Olinto Cristina dub in a 1937 Walt Disney production released by RKO Radio Pictures?

Context paragraphs:
Hawaiian Holiday: Hawaiian Holiday is a 1937 American animated short film produced by Walt Disney Productions and released by RKO Radio Pictures.  The cartoon stars an ensemble cast of Mickey Mouse, Minnie Mouse, Pluto, Donald Duck, and Goofy while vacationing in Hawaii (then a territory of the United States).  The film was directed by Ben Sharpsteen, produced by John Sutherland and features the voices of Walt Disney as Mickey, Marcellite Garner as Minnie, Clarence Nash as Donald, and Pinto Colvig as Goofy and Pluto.  It was Disney's first film to be released by RKO, ending a five-year distributing partnership with United Artists.

Olinto Cristina: Olinto Cristina (5 February 1888 – 17 June 1962) was an Italian film actor.  He appeared in 75 films between 1932 and 1957.  He also was a renowned dubber in Italian post-synchronized versions of foreign films, providing his voice for actors such as C. Aubrey Smith, Sig Ruman, Frank Morgan or Lionel Barrymore.  As far as animated films are concerned, he dubbed Doc in "Snow White and the Seven Dwarfs" (redubbed in 1972), "Bambi" 's friend Owl (redubbed in 1968) and others.

Snow White and the Seven Dwarfs (1937 film): Snow White and the Seven Dwarfs is a 1937 American animated musical fantasy film produced by Walt Disney Productions and originally released by RKO Radio Pictures.  Based on the German fairy tale by the Brothers Grimm, it is the first full-length cel animated feature film and the earliest Disney animated feature film.  The story was adapted by storyboard artists Dorothy Ann Blank, Richard Creedon, Merrill De Maris, Otto Englander, Earl Hurd, Dick Rickard, Ted Sears and Webb Smith.  David Hand was the supervising director, while William Cottrell, Wilfred Jackson, Larry Morey, Perce Pearce, and Ben Sharpsteen directed the film's individual sequences.

List of RKO Pictures films: RKO (Radio-Keith-Orpheum) Pictures (also known as RKO Productions, Radio Pictures, RKO Radio Pictures, RKO Teleradio Pictures and, for a short time, RKO Pathé) is an American film production and distribution company.  The original company produced films from 1929, the year after its inception, through its dissolution in 1959.  RKO is an acronym for "Radio-Keith-Orpheum", created when RCA orchestrated a merge between Film Booking Offices of America (FBO) and Keith-Albee-Orpheum (KAO), and was officially announced on October 23, 1928.  Within two years, the company added Pathé Exchange to the organization, which included the new company's studios in Culver City, its film laboratories in New Jersey, Pathé News, and the company's distribution networks in Europe and the United States.

RKO General: RKO General, Inc. was the main holding company through 1991 for the noncore businesses of the General Tire and Rubber Company and, after General Tire's reorganization in the 1980s, GenCorp.  The business was based around the consolidation of its parent company's broadcasting interests, dating to 1943, and the RKO Pictures movie studio General Tire purchased in 1955.  The holding company acquired the name of RKO General in 1959 after General Tire dissolved the film studio.  The original RKO Radio Pictures, Inc. corporation name was then changed to the present day RKO General, Inc.  Current RKO Radio Pictures copyrights are held by this corporate name.  Headquartered in New York City, the company operated six television stations and more than a dozen major radio stations around North America between 1959 and 1991.

Peter Pan (1953 film): Peter Pan is a 1953 American animated adventure film produced by Walt Disney and based on the play "Peter Pan, or The Boy Who Wouldn't Grow Up" by J. M. Barrie.  It is the 14th Disney animated feature film and was originally released on February 5, 1953, by RKO Radio Pictures.  "Peter Pan" is the final Disney animated feature released through RKO before Walt Disney's founding of his own distribution company, Buena Vista Distribution, later in 1953 after the film was released.  "Peter Pan" is also the final Disney film in which all nine members of Disney's Nine Old Men worked together as directing animators.  It is also the second Disney animated film starring Kathryn Beaumont, Heather Angel, and Bill Thompson after their roles in the animated feature "Alice in Wonderland".

Saludos Amigos: Saludos Amigos (Spanish for "Greetings, Friends") is a 1942 American live-action animated package film produced by Walt Disney and released by RKO Radio Pictures.  It is the sixth Disney animated feature film and the first of the six package films produced by Walt Disney Productions in the 1940s.  Set in Latin America, it is made up of four different segments; Donald Duck stars in two of them and Goofy stars in one.  It also features the first appearance of José Carioca, the Brazilian cigar-smoking parrot.  "Saludos Amigos" was popular enough that Walt Disney decided to make another film about Latin America, "The Three Caballeros", to be produced two years later.  "Saludos Amigos" premiered in Rio de Janeiro on August 24, 1942.  It was released in the United States on February 6, 1943.  At 42 minutes, it is Disney's shortest animated feature to date.  It garnered positive reviews and was theatrically reissued in 1949, when it was shown on a double bill with the first reissue of "Dumbo".

List of Walt Disney Pictures films: This is a list of films released theatrically under the Walt Disney Pictures banner (known as that since 1983, with "Never Cry Wolf" as its first release) and films released before that under the former name of the parent company, Walt Disney Productions (1929–1983).  Most films listed here were distributed in the United States by the company's distribution division, Walt Disney Studios Motion Pictures (formerly known as Buena Vista Distribution Company [1953–1987] and Buena Vista Pictures Distribution [1987–2007]).  The Disney features produced before "Peter Pan" (1953) were originally distributed by RKO Radio Pictures, and are now distributed by Walt Disney Studios Motion Pictures.

The Reluctant Dragon (1941 film): The Reluctant Dragon is a 1941 American live action and animated film produced by Walt Disney, directed by Alfred Werker, and released by RKO Radio Pictures on June 20, 1941.  Essentially a tour of the then-new Walt Disney Studios facility in Burbank, California, the film stars radio comedian Robert Benchley and many Disney staffers such as Ward Kimball, Fred Moore, Norman Ferguson, Clarence Nash, and Walt Disney, all as themselves.

A Trip Through the Walt Disney Studios: A Trip Through the Walt Disney Studios was a documentary made in response to requests from members of RKO Radio Pictures for a behind the scenes look at Walt Disney Studios.  The film was never intended for public showing; it was only shown to executives at RKO.  However, footage from this documentary was recycled into a shorter featurette, "How Walt Disney Cartoons Are Made", which was released to public audiences.  It was shot in the first week of July 1937.

Supporting paragraphs: Olinto Cristina Snow White and the Seven Dwarfs (1937 film)
Answer: Doc