The Duo () is a 2011 South Korean historical drama series, starring Chun Jung-myung, Lee Sang-yoon, Han Ji-hye and Seo Hyun-jin.
 It aired on MBC from February 7 to May 24, 2011 on Mondays and Tuesdays at 21:55 for 32 episodes.
I Am the King (, also known as I Am a King) is a 2012 South Korean historical comedy film, starring Ju Ji-hoon, Park Yeong-gyu, Baek Yoon-sik, Byun Hee-bong and Kim Su-ro.
 Inspired by Mark Twain's novel "The Prince and the Pauper", the film is set in the Joseon Dynasty with Ju playing the dual role of a king and a beggar.
 It was released on August 8, 2012 and ran for 120 minutes.
Dr. Jin () is a 2012 South Korean historical television drama series, starring Song Seung-heon in the title role of Dr. Jin, a 21st-century neurosurgeon who travels back in time to the Joseon Dynasty.
 Also starring Park Min-young, Lee Beom-soo, Kim Jaejoong of JYJ and Lee So-yeon, it aired on MBC from May 26 to August 12, 2012 on Saturdays and Sundays at 21:50 for 22 episodes.
Chun Bo-geun (born August 23, 2002) is a South Korean actor.
 He first garnered attention in a KTF commercial in 2008, then began his career as a child actor in 2009.
 Chun has starred in the films "Hello Ghost" (2010) and "The Grand Heist" (2012), as well as the television series "Wish Upon a Star" (2010) and "The Queen's Classroom" (2013).
Too Many Thieves is a 1967 American crime film directed by Abner Biberman and starring Peter Falk, Britt Ekland and Joanna Barnes.
 A gang of criminals steal a priceless Macedonian artifact from a museum.
Arang and the Magistrate (; also known as Tale of Arang) is a 2012 South Korean historical television drama, starring Lee Joon-gi, Shin Min-ah and Yeon Woo-jin.
 The period horror-romance is based on the folklore of Arang, who died unjustly and returns as a ghost in order to reveal the circumstances surrounding her death.
 It aired on MBC from August 15 to October 18, 2012 on Wednesdays and Thursdays at 21:55 for 20 episodes.
The Grand Heist (; lit.
 "Gone With the Wind") is a 2012 South Korean historical comedy film about a gang of 11 thieves who try to steal ice blocks from the royal storage, "Seobingo", during the last years of the Joseon era.
 It was released on August 8, 2012.
The Great Seer (, also known as The Great Geomancer) is a 2012 South Korean historical television series, starring Ji Sung, Ji Jin-hee, Song Chang-eui, Kim So-yeon and Lee Yoon-ji.
 Set during the turbulent decline of Goryeo, it is about practicers of divination and the power that they hold over the fate of the country.
 It aired on SBS from October 10, 2012 to February 7, 2013 on Wednesdays and Thursdays at 21:55 for 35 episodes.
The Concubine (; lit.
 "Royal Concubine: Concubine to the King") is a 2012 South Korean historical film directed by Kim Dae-seung.
 Set in the Joseon Dynasty, it centers around Hwa-yeon (Jo Yeo-jeong), who becomes a royal concubine against her will, Kwon-yoo (Kim Min-joon), a man torn between love and revenge, and Prince Sung-won (Kim Dong-wook), who has his heart set on Hwa-yeon despite the countless women available to him.
 These three characters form a love triangle which is ruled by dangerous passion.
 The struggle to survive within the tight-spaced boundaries of the palace is intense, and only those who are strong enough to overcome the hell-like milieu can survive.
Masquerade (; lit.
 Gwanghae: The Man Who Became King) is a 2012 South Korean historical film starring Lee Byung-hun in dual roles as the bizarre King Gwanghae and the humble acrobat Ha-sun, who stands in for the monarch when he faces the threat of being poisoned.

Question: Chun Bo-geun stars the 2012 South Korean historical comedy film in which he is in a gang of how many thieves?
Answer: 11