Question: Kickboxer 4: The Aggressor is a 1994 direct-to-video release martial-arts film, directed by which American film director best known for having made many low-budget B-movies and direct-to-video action films?

Context paragraphs:
Low-budget film: A low-budget film or low-budget movie is a motion picture shot with little to no funding from a major film studio or private investor.  Many independent films are made on low budgets, but films made on the mainstream circuit with inexperienced or unknown filmmakers can also have low budgets.  Many young or first time filmmakers shoot low-budget films to prove their talent before doing bigger productions.  Many low-budget films that do not gain some form of attention or acclaim are never released in theatres and are often sent straight to retail because of its lack of marketability, look, story, or premise.  There is no precise number to define a low budget production, and it is relative to both genre and country.  What might be a low-budget film in one country may be a big budget in another.  Modern-day young filmmakers rely on film festivals for pre promotion.  They use this to gain acclaim and attention for their films, which often leads to a limited release in theatres.  Film that acquire a cult following may be given a wide release.  Low-budget films can be either professional productions or amateur.  They are either shot using professional or consumer equipment.

Kickboxer 3: Kickboxer 3: The Art of War is a 1992 direct-to-video martial-arts film directed by Rick King.  The film is the third in the "Kickboxer" film series with only Sasha Mitchell and Dennis Chan returning from the previous films.  It was also the last film to feature Dennis Chan as Xian Chow.

Albert Pyun: Albert Pyun (born May 19, 1953) is an American film director best known for having made many low-budget B-movies and direct-to-video action films.  The Independent Film Channel said that Pyun "has carved out a unique niche as a director of low-budget, high-concept genre films starring actors past their prime", adding that "others believe this a charitable description for Pyun, who has also been derided as the new Ed Wood."  Though he frequently blends kickboxing and hybrid martial arts with science fiction and dystopic or post-apocalyptic themes, which often include cyborgs.  Pyun stated in an interview that "I have really no interest in cyborgs.  And I've never really had any interest in post-apocalyptic stories or settings.  It just seemed that those situations presented a way for me to make movies with very little money, and to explore ideas that I really wanted to explore — even if they were [controversial]."

Producers Releasing Corporation: Producers Releasing Corporation was one of the less prestigious film studios of Hollywood which together made what became known as Poverty Row, and lasted from 1939–47.  PRC, as it was commonly known, made low-budget B-movies for the lower half of a double bill or the upper half of a neighborhood cinema showing second-run films.  The company was substantial enough to not only produce but distribute its own product and some imports from the UK, and operated its own studio facility, first at 1440 N. Gower Street (on the lot that eventually became Columbia Pictures) from 1936–43, then the complex used by the defunct Grand National Films Inc. from 1943-46, located at 7324 Santa Monica Blvd.  This address is now an apartment complex.

Fortunes of War (film): Fortunes of War is a 1994 Direct-to-video action film filmed in the Philippines directed by Thierry Notz that was produced by as well as starring Matt Salinger.

The Voice of Merrill: The Voice of Merrill (a.k.a. Murder Will Out) is a 1952 British mystery film, directed by John Gilling and starring Valerie Hobson and James Robertson Justice.  "The Voice of Merrill" was made by Tempean Films, the company owned by the film's producers Monty Berman and Robert S. Baker, which between the late 1940s and the late 1950s specialised in turning out low-budget B-movies as unpublicised second-features for the UK cinema market.  On its release however, "The Voice of Merrill" was recognised by its distributors, Eros Films, as unusually sophisticated and stylish for a B-movie, and was elevated to the status of co-feature in cinemas.

Ahna Capri: Anna Marie Nanasi (July 6, 1944 – August 19, 2010), better known by her professional name Ahna Capri (also as "Anna Capri"), was an American film and television actress best known for her role as Tania (secretary of Han) in the classic martial-arts film "Enter the Dragon".

Paul Michael Robinson: Paul Michael Robinson (born April 7, 1963) is an American actor, photographer, producer and model.  He is most well known for playing the sexually inexperienced, alien leader Haffron from the classic "Emmanuelle in Space".  He is well known in direct-to-video action films including "Maximum Security", "Active Stealth", and "The Capitol Conspiracy".

Kickboxer 4: Kickboxer 4: The Aggressor is a 1994 direct-to-video release martial-arts film directed by Albert Pyun.  The film is the fourth entry in the "Kickboxer" series.  This was the last film to star Sasha Mitchell, who reprises his role as David Sloan.

David Heavener: David Heavener (born December 22, 1958) is an American singer, songwriter, director, actor, composer, producer and writer, specialising in low-budget features and direct-to-video action films.

Supporting paragraphs: Kickboxer 4 Albert Pyun
Answer: Albert Pyun