Question: Which character was mostly unknown by name and starred in Roogie's Bump?

Context paragraphs:
Nicole Courcel: Nicole Marie Jeanne Andrieu (21 October 1931 – 25 June 2016), better known as Nicole Courcel, was a French actress who achieved popularity through the 1950s and 1960s, though she is mostly unknown outside of France.  Born in Saint-Cloud, western suburbs of Paris, she appeared in 43 films between 1947 and 1979.  After working as an extra in a few films, she won a major role in "Rendez-vous de juillet" (1949), with Brigitte Auber.  In 1970, she turned to television appearing in different television films and miniseries, in which she continued to work until 2004.  Courcel is best known for her role in Serge Bourguignon's "Sundays and Cybele" (1962).  She had notable parts in: "La Marie du port" (1950, opposite Jean Gabin), Sacha Guitry's "Royal Affairs in Versailles" (1954), and "La Sorcière" (1956, opposite Marina Vlady).

Causerie: Causerie (from French, "talk, chat") is a literary style of short informal essays mostly unknown in the English-speaking world.  A causerie is generally short, light and humorous and is often published as a newspaper column (although it is not defined by its format).  Often the causerie is a current-opinion piece, but it contains more verbal acrobatics and humor than a regular opinion or column.  In English, causerie is commonly known as "personal story", "talk of the town", "funny story" or "column" instead.

Psychotropica: Psychotropica is a 2009 experimental fantasy film.  It was directed by Damien Sage.  The film was also written by Damien Sage under the pseudonym Sergio Mauroforte.  The cast is composed of mostly unknown actors and actresses from the Raleigh, North Carolina area.  The film also features Aeryn Süin of the industrial rock band RIP/TORN in a supporting role.  Aeryn Süin and RIP/TORN also provided the score and original songs.

School of Paris (Middle Ages): School of Paris refers to the many manuscript illuminators, whose identities are mostly unknown, who made Paris an internationally important centre of illumination throughout the Romanesque and Gothic periods of the Middle Ages, and for some time into the Renaissance.  The most famous of these artists were Master Honoré, Jean Pucelle and Jean Fouquet.

Robert F. Simon: Robert F. Simon (December 2, 1908 – November 29, 1992) was an American character actor, often portraying military or authority figure roles.  Though his face was recognized by audiences, he was mostly unknown by name.  A life member of The Actors Studio, Simon appeared in films and on television between 1950 and 1985, having mastered the genre of westerns, drama, and comedy.

Child Is Father of the Man: "Child Is Father of the Man" is a song written by Brian Wilson and Van Dyke Parks.  Originally recorded by the American rock band the Beach Boys, it was to be included on their projected album "Smile".  Due to the project's abandonment, the intended nature of the piece is mostly unknown.  The result left is a nearly instrumental piece with the words ""child"" and ""father of the man"" sung over the chorus.  Biographer Jon Stebbins describes the track: "a brooding and expansive aura, with a plaintive harmonica line not dissimilar to those heard on Ennio Morricone spaghetti western soundtracks."

List of extinct indigenous peoples of Brazil: At the time of the discovery of Brazil by the Europeans, a total of 2,000 indigenous nations, divided into several thousands of tribes existed in Brazil.  The total number of native tribes which inhabited the present day Brazil at the time of first contact is disputed, as well as difficult to ascertain.  The names of large number of tribes who were exterminated as a result of intertribal warfare is not recorded anywhere and so is the case of several smaller tribes who were wiped out by the colonizers.  Curt Nimuendajú gives a list of 1,400 nations in his monumental work Mapa etno-histórico do Brasil e regiões adjacentes, but he ignored many smaller (extinct) tribes in Eastern Brazil, and was unaware of some other tribes which were uncontacted at that time.  Currently only 200 nations (790 tribes) are alive, with no survivors being reported for the remaining nations.  However this doesn't mean all their bloodlines are extinct only their cultures.  Brazilian Pardo and Mestizo population have mostly unknown indigenous backgrounds.  Which can and probably have many of this indigenous peoples as ancestors.  The Bandeirantes once hunted and enslaved indigenous peoples in the then unknown interior of Brazil from the 16th to the early 19th century.  The indigenous peoples were eventually aculturated and integrated into European civilization.

Roogie's Bump: Roogie's Bump is a 1954 American comedy film directed by Harold Young and written by Jack Hanley and Dan Totheroh.  The film stars Robert Marriott, Ruth Warrick, Olive Blakeney, Robert F. Simon, William Harrigan and David Winters.  The film was released on August 25, 1954, by Republic Pictures.

Mart Duggan: Martin J. "Mart" Duggan (November 10, 1848 – April 9, 1888) was a gunfighter of the American Old West who, although mostly unknown today, was at the time one of the more feared men in the west.  He is listed by author Robert K. DeArment, in his book ""Deadly Dozen"", as one of the most underrated gunmen of the Old West.

Nobuhiko Obayashi: Nobuhiko Obayashi (大林 宣彦 , Ōbayashi Nobuhiko , born 9 January 1938) is a Japanese director, screenwriter and editor of films and television advertisements who is well known for his surreal visual style.  He began his career as a pioneering figure in Japanese experimental film during the 1960s before transitioning to directing more mainstream works such as television and feature films.  Though he remains mostly unknown outside Japan, he has made many films in his 50 years of working with the medium.

Supporting paragraphs: Roogie's Bump Robert F. Simon
Answer: Robert F. Simon