Dongfang Bubai, literally "Invincible East", is a fictional character in the wuxia novel "The Smiling, Proud Wanderer" by Jin Yong.
 He is the leader of the Sun Moon Holy Cult (), an "unorthodox" martial arts sect.
 In his quest to dominate the "wulin" (martial artists' community), he castrated himself to fulfil the prerequisite for learning the skills in a martial arts manual known as the "Sunflower Manual" (), and became a formidable martial artist after mastering those skills.
 His castration and supreme prowess in martial arts make him one of the most memorable characters in Jin Yong's wuxia universe even though he appears in only one chapter of the novel.
 His name has also become virtually synonymous with homosexuality and LGBT sexual orientations in Chinese popular culture.
Antonio Graceffo (born September 6, 1967) is a martial artist and adventure author living in Asia .
 He is also the host of the web TV show, Martial Arts Odyssey, which traces his ongoing journey through Asia learning martial arts in various countries.
 Graceffo is credited for revitalizing the lost Khmer art of Bokator by being the first to report on it.
 Beyond martial arts, Graceffo is also a student of multiple languages, including Mandarin Chinese, Thai, Khmer, Vietnamese, German, Spanish, Italian, and French.
Vidyut Jammwal (born 10 December 1980) is an Indian film actor who predominantly works in Hindi films.
 He is also a trained martial artist, having learned Kalaripayattu (a martial art of Kerala) since the age of three.
 He is popularly known as "The New Age Action Hero of Bollywood".
 He has also worked in Kollywood and Tollywood films.
Martial arts film is a film genre.
 A subgenre of the action film, martial arts films contain numerous martial arts fights between characters.
 They are usually the films' primary appeal and entertainment value, and often are a method of storytelling and character expression and development.
 Martial arts are frequently featured in training scenes and other sequences in addition to fights.
 Martial arts films commonly include other types of action, such as hand-to-hand combats, stuntwork, chases, and gunfights.
Mind, Body & Kick Ass Moves is a television programme broadcast on BBC Three.
 Presented by Chris Crudelli the documentary series travels around the Far East exploring different martial arts and learning the secret skills and knowledge of the 'Grandmasters'.
 The series investigates aspects of each different martial art by filming the masters demonstrating their style and skills.
 There is one series of 10 episodes.
 Each episode focuses on a mix of different martial arts and masters and shows Crudelli taking some martial arts and tricks to the streets, in a style similar to street magic.
 The opening narration states Crudelli is a master of combat and esoteric energies.
Thuppakki ("The Gun") is a 2012 Tamil-language Indian action-thriller film written and directed by AR Murugadoss.
 It features Vijay and Kajal Aggarwal in the lead roles, Vidyut Jammwal as the antagonist, as well as Jayaram and Sathyan in supporting roles.
 The film, produced by S. Thanu, features background score and soundtrack composed by Harris Jayaraj with cinematography handled by Santosh Sivan.
 The story revolves around an Indian Army officer from a Mumbai-based Tamil family on a mission to track down and destroy a terrorist group and deactivate the sleeper cells under its command, after witnessing and barely escaping a bomb blast executed by them.
Billy Kessler is a fictional character in the comic book series "".
 He is the son of the main villain of the series, Cobra Commander, but fights against his father and the forces of Cobra Command, learning martial arts under the tutelage of Storm Shadow, who helps him after a botched attempt on Cobra Commander's life.
 While still a boy, he loses an eye and a leg when a Cobra operative destroys a car in which he is riding, and after recovering he goes on to become a member of his father's greatest enemy, the G.I. Joe team.
Ashton Chen Xiaolong (born 6 January 1988 in Dengfeng, Zhengzhou, Henan), also known by his stage name Shi Xiaolong ("Sik Siu-Lung" in Cantonese), is a Chinese actor and martial artist.
 He is also credited as Xiaolung, Tommy Sik, Shi Xiao-Lung, Shi Xiao-Long, Shi Shao-Long, Shieh Shiao-Long, Xi Xiao-Long, Sik Siu-Loong, and S. L. Sik on some of his films.
 He has been a disciple of Shi Yongxin, the current abbot of Shaolin Temple, since he was two years old.
 Originally named "Chen Xiaolong", Chen was given a dharma name—Shi Xiaolong—by the abbot.
 He was taught martial arts by his father and Shi Yongxin at a young age.
 He gained attention in the entertainment industry after his performance at the International Shaolin Kung Fu Festival in Zhengzhou at the age of four.
 He became a child actor in China and achieved great success in films such as the 1994 martial arts comedy "" (新乌龙院).
 In 2003, he stopped acting and went to study in the United States.
 In 2005, he returned to China and starred as Zhan Zhao in the television series "Young Justice Bao III".
 In 2007, he continued his studies in the United States and graduated from high school in 2008 from the prestigious Performing Children's School (PCS) in New York City.
 He has continued his acting career in China since then.
 In 2010, Chen played one of Ip Man's students in the martial arts film "Ip Man 2".
Charles Henry Gaylord (September 24, 1936 – August 4, 2009) was an American martial artist.
 He began learning martial arts in 1954.
 After receiving his black belt, Gaylord became the second generation of the Emperado Method of Kajukenbo.
 In 1963, he moved from Hawaii to Northern California where he began teaching his own style of Kajukenbo, which became known as the "Gaylord Method".
 Gaylord was featured in Episode 10 of "Fight Quest" on the Discovery Channel.
Max Trombini had a humble and troubled childhood.
 Abandoned by the father when still young, he was raised by his mother and grandfather, who died when he was 11 years old.
 Disgusted, he began to get in all sorts of trouble in his hometown, Ubatuba, and then in Bastos, where he lived.
 It was through learning martial arts, particularly judo, through which he managed to level out emotionally and build a career.

Question: At what age did the actor who played the "antagonist" in the film Thuppakki first start learning martial arts?
Answer: three