|Stage Name||Birth Name||Position||Birthday||Age||Height||Star Sign||C Y||BT|
|Cory 코리||Hong Joohyun||Leader, Vocal||27||177 cm or 5'9½"||Sagittarius||Horse||O|
|Kisu 기수||Choi Kisu||Vocal||26||178 cm or 5'10"||Libra||Ram||B|
|Jeonguk 정욱||Kim Jeonguk||Dancer, Rapper||25||177 cm or 5'9½"||Pisces||Rooster||A|
|Hui 휘||Liang Hui||Rapper||22||178 cm or 5'10"||Cancer||Pig|
|Changsun 창선||Lee Changsun||Vocal, Dancer||22||179 cm or 5'10½"||Pisces||Rat|
|Jinhong 진홍||Kim Jinhong||Vocal, Maknae||20||179 cm or 5'10½"||Capricorn||Ox||O|
|Hongseob 홍섭||Shim Hongseob||Rapper||20||177 cm or 5'9½"||Capricorn||Ox|
24K 투포케이 is a male idol group formed under Choeun Entertainment in 2012. They debuted on September 6, 2012, with the mini-album Hurry Up. The current lineup consists of Cory, Kisu, Jeonguk, Hui, Changsun, Jinhong, and Hongseob. On August 11, 2016, Sungoh and Daeil did not participate in their single, "Still 24K." Hongseob and Changsun were brought in as backup members to remain as a seven-member group instead.
Prior to the debut of the group, the acoustic pop sub-unit 4K debuted. Consisting of vocalists Cory, Seokjune, Kisu, and Sungoh, they released Rocking Girl in June 2012. With the addition of Daeil and Byungho, 24K released its first mini-album Hurry Up on September 6. On January 16 of the following year, 24K began an additional promotion cycle for the record by performing "Secret Love."
24K released their second mini-album U R So Cute on August 1, 2013. A "cute" concept, the title track features a "hard rock guitar sound" mixed with a "European-style house beat."
Member Daeil participated in the second season of Mnet's TV show, "Dancing 9."
24K returned after a 2-year hiatus with the digital single, "Hey You," along with two new members, Hui and Jinhong.
On October 1, 2015, 24K made a comeback with their third mini-album Super Fly.
Partnering up with +Social, 24K held their first European concert in Warsaw, Poland on January 23, 2016, at Progresja Music Zone Main Stage. They had a showcase in Malaysia on April 22–24, presented by New Pro Star.
24K came back with the digital single "Still 24K" on August 11.
On October 21, 24K returned with their first full-length album, The Real One, containing previously released singles "Secret Love," "Hey You," "Super Fly," "Still 24K," and "BINGO". For 2017, Choeun Entertainment announced 24K's first European tour starting on January 3, 2017, in Milan, Italy.
Upon debut, 24K employed various genres into its music. On the mini-album Hurry Up, the record incorporated pop, trance, dubstep, and industrial into its sound. On the second mini-album U R So Cute, the group incorporated elements of hip-hop and electronic dance music.
Cory has expressed his admiration for hip-hop producers Dr. Dre and Teddy Park. Kisu was influenced by Urban Zakapa, which led to his fascination with R&B and soul music.
24K had their January 2016 Poland concert without Sung-oh. They held an April 2016 showcase in Malaysia with Sungoh and Daeil being absent for unknown reasons. On August 1, Choeun Entertainment made an official statement saying that members Daeil and Sungoh would be on hiatus; Sungoh was receiving medical treatment for his dislocated shoulder and Daeil had chosen to take a personal leave, although it was later discovered that Daeil had left the group to debut as a solo artist under the name "Big One." The statement also revealed that two new members, Changsun and Hongseob, would be added to continue as a seven-member group.
• vocalist Sungoh 성오 was born Yu Seongoh 유성오on January 8, 1991
• rapper and dancer Daeil 대일 was born Kim Daeil 김대일 on May 10, 1992
• vocalist Seokjune 석준 was born Hong Seokjun 홍석준 on April 14, 1991
• rapper Byungho 병호 was born Park Byungho 박병호 on May 11, 1989