BTS (Korean: 방탄소년단; RR: Bangtan Sonyeondan), also known as the Bangtan Boys, is a seven-member South Korean boy band. The septet co-writes and produces much of their output. Originally a hip hop group, their musical style has evolved to include a wide range of genres.

BTS  consists of 7 members: RM, Jin, Suga, J-Hope, Jimin, V and Jungkook. BTS debuted on June 13, 2013, under Big Hit Entertainment, with the lead single ‘No More Dream’ on album ‘2 Cool 4 Skool’.

Kim Nam Joon (김남준)

 RM, his old stage name used to be Rap Monster (랩몬스터). He is a rapper and the lovely leader of the group and known as "god of destruction".

He was born in Ilsan, Gyeonggi-d, South Korea and has a younger sister, Kim Kyung Min.

He studied in New Zealand and lived/stayed there for 6 months. BTS has been around since 2010, but they debuted in 2013 because of the constant member change up. RM is the only member left from the original line up. He taught himself how to speak English, and can speak it extremely well. Despite his rough and tough image, he is very playful and relaxed.

Kim Seok Jin (김석진)

Jin, is a vocalist and visual of the group and also the oldest. He is known as "worldwide handsome" and has very broad shoulders. He was born in Anyang, Gyeonggi-do, but when he was about 1 year old his family moved to Gwacheon, Gyeonggi-do and has an older brother, Kim Seok Joong, 2 years older than him.Jin is ranked 47th on TC Candler “The 100 Most Handsome Faces of 2018”. Jin’s ideal type is a girl whose looks and personality is similar to that of a puppy, who’s good at cooking, kind and takes good care of him and according to members, he have the best body in Bangtan.

Min Yoon Gi (민윤기)

Suga, he is the main rapper of the group and loves to do nothing when he has free time, taking photos, avoiding having to do work. He was born in Buk-gu, Daegu, South Korea and has an older brother, Min Junki. He graduated at Global Cyber University as a Liberal Arts Major (bachelor). Suga has co-composed/co-produced 80+ songs. Suga uses the alias Agust D for his solo works. (“DT”, short for his birth place “Daegu Town”, and “Suga”, spelled backwards).

Jung Ho Seok (정호석)
J-Hope, he is the main dancer, rapper, sub vocalist and also the sunshine of the group. He was born in Gwangju, South Korea and has an older sister, Jung Dawon. His father is a high school literature teacher (teaching at Gwangju Global High School). He chose the name “J-Hope” as his stage name because he wants to be a source of light and hope to his fans. He auditioned and won a popularity award at a JYP Entertainment competition.

Park Ji Min (박지민)
Jimin, he is the main dancer and lead vocalist of Bangtan. He is known as "mochi" for his squishy cheeks and known to be the member that has the smallest fingers. He was born in Busan, South Korea and has a younger brother, Park Jihyun. He studied at  Busan High School of Arts; Global Cyber University as Theatre and film major (bachelor). Jimin was the last member to join BTS. Jimin is ranked 25th on TC Candler “The 100 Most Handsome Faces of 2018”.

Kim Tae Hyung (김태형)
V, he is a lead dancer and vocalist. He was born in Daegu, but later moved to Geochang where he spent his life until he moved to Seoul and has a younger sister (Kim Eun Jin) and a younger brother (Kim Jong Gyu).
He studied at Korea Art School; Global Cyber University.  It is said that when his teaser image was released 5 personal fan clubs were created. They call him Blank Tae because of his blank expression and has a habit of biting his nails and sticking out his tongue. V ranked 1st in the “Top 100 Most Handsome Faces of 2017“. And also ranked 5th on TC Candler “The 100 Most Handsome Faces of 2018”.

Jeon Jeong-guk (전정국)
Jungkook, main dancer, main vocalist, sub rapper, center and maknae of Bangtan and is said to be a very skilled cook. He was born in Busan, South Korea and has an older brother, Jeon Junghyun. He graduated at Seoul School of Performing Arts; Global Cyber University. Jungkook ranked 13th in the “Top 100 Most Handsome Faces of 2017” and also ranked 2nd on TC Candler “The 100 Most Handsome Faces of 2018”.

Reference: Kprofile