Choi Jin (Korean: 최진; born 6 January 1983), more commonly known by the stage name Mithra Jin (미쓰라 진), is a South Korean rapper and lyricist, best known as a member of the hip hop group Epik High.

Mithra Jin initially had no inclination towards the music or entertainment industry since his family could not afford additional enrichment courses due to the financial crisis.^[1] He started listening to hip hop music in high school and was scouted at a performance by producer J-Win.^[2] Having enjoyed writing poetry since childhood, he was drawn to the art of writing lyrics and rapping after J-Win introduced him to Rakim's music.^[1]

Mithra Jin was part of hip hop crew K-Ryders [ko] from 2001 to 2002 with J-Win and Kyungbin. J-Win introduced him to Tablo and they began performing together alongside Movement [ko], the most prominent hip hop crew of that time and included the likes of Drunken Tiger and CB Mass. They met DJ Tukutz, a turntablist-DJ who occasionally played with CB Mass, and eventually formed Epik High. As hip hop was still a mostly underground genre, the trio each worked various part-time jobs to raise the necessary funds to produce an album but were defrauded.^[3]

In 2003, Epik High signed with the newly-founded Woollim Entertainment and released their debut album Map of the Human Soul, with J-Win and CB Mass members Gaeko and Choiza serving as co-producers or composers on the majority of the tracks. In 2010 Mithra Jin was among the featured artists in "Ambassador Slang", one of the tracks from the debut solo album of Rakaa.^[4] He co-composed "She's Back", one of the promoted singles from the debut release of Woollim labelmates Infinite.^[5]

While Epik High was officially on hiatus due to his and DJ Tukutz's enlistments, Tablo signed with YG Entertainment, sparking rumors of disbandment; it was clarified that Tablo had actually done so with the support of both members. Plans for Epik High's upcoming comeback had begun before Mithra Jin's discharge and they began recording days after he was officially discharged in May 2012.^[6]

On 25 July 2012, YG Entertainment officially announced that Epik High be making a comeback after a three-year hiatus and that Mithra Jin and DJ Tukutz would be joining Tablo in signing exclusive contracts with the label.^[7] Their comeback album 99 was released on 23 October 2012.^[6]

In 2018, Epik High left YG Entertainment after their contract ended.^[8] The trio founded their own independent agency, Ours Co, and manage the group and individual activities themselves.^[9]

On 3 August 2010, Mithra Jin enlisted for mandatory military service in Chuncheon. After serving in various roles, his final posting was at the Defense Media Agency (DEMA). He was discharged by the Ministry of National Defense in Yongsan District, Seoul on 14 May 2012.^[10]

On 22 December 2014, Mithra Jin publicly revealed his relationship with actress Kwon Da-hyun when they attended the VIP screening of How to Steal a Dog, which starred his bandmate Tablo's wife Kang Hye-jung.^[11] They married in a private wedding ceremony on 2 October 2015.^[12][13][14] They have a son (born June 2021).^[15]

• Epik High's official website (in Korean)
• Mithra Jin's Cyworld homepage (in Korean)