As far as I know, the top three are as follows: Mickey Rooney as Andy Hardy (16 times), Lois Maxwell as Miss Moneypenny in the James Bond films (14 films plus a 1967 TV special), and Johnny Weismuller as Tarzan (12 films).
According to Wikipedia Desmond Llewelyn played Q in 17 James Bond Films (Quiz Right)
Well, if you include foreign films/actors, Shintaro Katsu played the character Zatoichi for twenty years. He started with 18 feature films, then a 24 episode television series, then reprised the role in 3(?) more films to include the cross over films Zatoichi Meets Yojimbo and Zatoichi Meets the One Armed Swordsman.
Many films have a character named 'Mongo', but "Blazing Saddles" (1974) is the most famous. He was played by Alex Karras.
Ted Cassidy is the famous actor who played the character of Lurch in the Addams Family Movie. He has done many movies but he role of Lurch was his most notable role played.
Jeff Stryker is an American pornographic actor. Even though he has performed in heterosexual and bisexual films, he is perhaps most famous for appearing in homosexual films.
to interpret how a character sounds and acts
Most actors are committed to there job and love what they do. Actors stay actors till they die but they do not have to do a film if they don't want to. An average age for an actor to stop making films is 68.
Most famous and popular villain turned character artist of his time. Pran, who worked with almost three generations of the Indian film industry, has the most number of films in his credit. Starting from 1940 to 2002, he acted in approximate 400 films.
Vincent Price is widely regarded as the actor who starred in the most Edgar Allan Poe films, having appeared in several adaptations of Poe's works directed by Roger Corman during the 1960s.
Many films have a character named 'Mongo', but "Blazing Saddles" (1974) is the most famous. He was played by Alex Karras.
Bela Lugosi was a Hungarian actor. He was best known for playing the character Dracula in the 1931 film and for his roles in various other monster and horror films.
Francis Ford, the cousin of John Ford, has made 29 appearances in films directed by John Ford.
Desmond Llewelyn played in 17 different james bond movies as the character Q and is therefor the only correct answer
As for me Bohdan Stupka. He was born in Ukraine in 1944. He has played more than hundred roles in films.
who cares........ the worst character, and most unfunny actor on screen....... ben stiller
Jack Nicholson
Sharukh Khan
The actor who has portrayed the character of James Bond the most times as of 2012 is Roger Moore, who played James Bond in seven (7) films from 1973 to 1985. Sean Connery has also played Bond seven (7) times, from 1962 to 1983. However, his last outing as Bond in Never Say Never Again (1983), is not considered canon, as it was not a Eon production.
The actor Riley Smith has appeared in many high budget films. Some of his most known films have been Radio, New York Minute, Weapons and Eight Legged Freaks.