Park began working in films as a stunt double for the film Mortal Kombat: Annihilation, doing the stunts for both Robin Shou and James Remar.
Park also did some cameos as monsters, including Baraka.
All of these were non-speaking roles.

In 1999, Park appeared in Star Wars: Episode I – The Phantom Menace, as the Sith Lord Darth Maul.
While the character only had three lines, Park's voice was dubbed over with that of actor Peter Serafinowicz.
From his work on Star Wars, Park was cast in a cameo role in Fanboys as a Skywalker Ranch security guard who says, "Time for you to get mauled, boy," as he pulls out two nightsticks.

In addition to this acting work, he has also been Christopher Walken's fight stunt double for the film Sleepy Hollow.
Park appeared in the scene where Walken's character, the Headless Horseman, murders the Killian family and Brom Bones, among others.

Park had his first real speaking part in X-Men as Toad.

In December 2007, Park was confirmed for the role of Snake-Eyes in G.I. Joe: The Rise of Cobra and G.I. Joe: Retaliation involving a variation of the international G.I. Joe force who fought the minions of Cobra in the comics.

He worked with comic book creator-turned-filmmaker Kevin VanHook in the film Slayer, starring in the dual roles of acrobatic twin vampires.
This film also saw him appearing again with Sleepy Hollow co-star Casper Van Dien.

ComiCon 2007 saw the premiere of the teaser trailer for Descendants, another comic book adaptation based on an independent comic by writer Joey Andrade.

Park appeared as Edgar in the fourth season of the television series Heroes.

Park was also included in the motion capture team of the 2008 James Bond video game adaptation of Quantum of Solace.

In the comic book-styled film Hellbinders, he plays a soulless mercenary who, along with an elite assassin (Johnny Yong Bosch) and the last remaining member of the long dead Knights Templar, Esteban Cueto, must overcome their innate mistrust of each other and join forces to defeat Legion before it opens the gates of hell itself and overruns the entire world.
Park narrated on 26 February 2010 the introduction of The FireBreather, a car from Classic Design Concepts in Detroit Autorama 2010, which appears in Park's supernatural thriller Jinn.

In 2011, Park guest starred in the TV series Nikita as the London Guardian, Brendan.
He reprised his role as Maul in Solo: A Star Wars Story (2018), with Sam Witwer providing the voice.

In 2019 during Star Wars Celebration, Dave Filoni revealed that Park reprised his role as Maul for the final season of Star Wars: The Clone Wars through mo-cap performance.
Park began working in films as a stunt double for the film Mortal Kombat: Annihilation, doing the stunts for both Robin Shou and James Remar. Park also did some cameos as monsters, including Baraka. All of these were non-speaking roles.
In 1999, Park appeared in Star Wars: Episode I – The Phantom Menace, as the Sith Lord Darth Maul. While the character only had three lines, Park's voice was dubbed over with that of actor Peter Serafinowicz. From his work on Star Wars, Park was cast in a cameo role in Fanboys as a Skywalker Ranch security guard who says, "Time for you to get mauled, boy," as he pulls out two nightsticks.
In addition to this acting work, he has also been Christopher Walken's fight stunt double for the film Sleepy Hollow. Park appeared in the scene where Walken's character, the Headless Horseman, murders the Killian family and Brom Bones, among others.
Park had his first real speaking part in X-Men as Toad.
In December 2007, Park was confirmed for the role of Snake-Eyes in G.I. Joe: The Rise of Cobra and G.I. Joe: Retaliation involving a variation of the international G.I. Joe force who fought the minions of Cobra in the comics.
He worked with comic book creator-turned-filmmaker Kevin VanHook in the film Slayer, starring in the dual roles of acrobatic twin vampires. This film also saw him appearing again with Sleepy Hollow co-star Casper Van Dien.
ComiCon 2007 saw the premiere of the teaser trailer for Descendants, another comic book adaptation based on an independent comic by writer Joey Andrade.
Park appeared as Edgar in the fourth season of the television series Heroes.
Park was also included in the motion capture team of the 2008 James Bond video game adaptation of Quantum of Solace.
In the comic book-styled film Hellbinders, he plays a soulless mercenary who, along with an elite assassin (Johnny Yong Bosch) and the last remaining member of the long dead Knights Templar, Esteban Cueto, must overcome their innate mistrust of each other and join forces to defeat Legion before it opens the gates of hell itself and overruns the entire world. Park narrated on 26 February 2010 the introduction of The FireBreather, a car from Classic Design Concepts in Detroit Autorama 2010, which appears in Park's supernatural thriller Jinn.
In 2011, Park guest starred in the TV series Nikita as the London Guardian, Brendan. He reprised his role as Maul in Solo: A Star Wars Story (2018), with Sam Witwer providing the voice.
In 2019 during Star Wars Celebration, Dave Filoni revealed that Park reprised his role as Maul for the final season of Star Wars: The Clone Wars through mo-cap performance.
Ray Park