|Stage Name||Birth Name||Position||Birthday Sort ascending||Age||Height||Star Sign||C Y||BT|
|Umji 엄지||Kim Yewon||Sub-vocal, Maknae||19||163 cm or 5'4"||Leo||Tiger||O|
|SinB 신비||Hwang Eunbi||Dancer, Visual||20||165 cm or 5'5"||Gemini||Tiger||AB|
|Yuju 유주||Choi Yuna||Vocal||20||169 cm or 5'6½"||Libra||Ox||B|
|Eunha 은하||Jung Eunbi||Vocal||21||163 cm or 5'4"||Gemini||Ox||O|
|Yerin 예린||Jung Yerin||Dancer||21||167 cm or 5'5½"||Leo||Rat||O|
|Sowon 소원||Kim Sojung||Leader, Rapper||22||172 cm or 5'7½"||Sagittarius||Pig||A|
GFriend 여자친구 is a six-member female idol group formed by Source Music in 2015. The group consists of Sowon, Yerin, Eunha, Yuju, SinB, and Umji. They made their debut with the EP Season of Glass on January 16, 2015. GFriend won several 2015 female rookie awards and has garnered momentum since their debut, despite coming from a small company. In 2016, they continued their success with their third EP, Snowflake, and won first place on many music shows with the title song "Rough." They released their first full-length album, LOL, in July 2016.
On January 15, 2015, GFriend released their five-track debut EP Season of Glass. The promotional track "Glass Bead 유리구슬," composed by Seo Yongbae and Iggy, debuted at number twelve on Gaon's weekly chart. The group started promotions for their album on January 16 on KBS's music program "Music Bank." On January 28, 2015, Billboard named GFriend as one of "Top 5 K-Pop Artists to Watch in 2015."
GFriend released their second EP, Flower Bud, and the music video for single "Me Gustas Tu 오늘부터 우리는" on July 23, 2015. GFriend started their group promotions on the same date as the album release, July 23, 2015, on Mnet's "M Countdown."
The group garnered international attention after a fan-taken video of GFriend members continuing and completing a performance of "Me Gustas Tu" despite continuously falling on a slippery stage went viral in September 2015. The group was praised for their professionalism, especially Yuju, who fell a total of eight times and suffered a twisted finger during the performance.
On September 17, 2015, GFriend made headlines again as the only girl group to be nominated in the 2015 MTV Europe Music Awards "Best Korean Act" category, alongside boy groups B1A4, BTS, Got7, and VIXX.
"Me Gustas Tu" was named the longest-charting song on Melon's Top 100 with 63 weeks. "Me Gustas Tu" and "Glass Bead" were also ranked 18th and 44th respectively in the 2015 Bugs Year-End Top 100.
On January 25, 2016, GFriend released their third EP, Snowflake, with the single "Rough 시간을 달려서." "Rough" is the last song to complete GFriend's high school concept trilogy along with "Glass Bead" and "Me Gustas Tu." During their fan meeting after the EP's showcase release, GFriend announced their fandom name to be "Buddy 버디." GFriend started the promotions for Snowflake on January 26 on SBS MTV's music program "The Show." The album debuted at number ten on Billboard's World Albums Chart.
On February 2, GFriend received their first music show win, taking a trophy for "Rough" on "The Show." They subsequently won another fourteen awards on the music shows, including picking up their first triple crowns on "M Countdown," "Music Bank," "Show Champion," and "Inkigayo." With a total of 15 wins, they placed second with the number of wins for girls groups, behind Apink who recorded a total of 17 wins with "Luv." "Rough" was also ranked first in Gaon Chart's First Half of 2016 chart rankings.
On June 15 it was announced that GFriend would star alongside Mamamoo on a new season of "Showtime." On June 29, Source Music started teasing GFriend's first studio album, LOL. The album's title was meant to signify both "laughing out loud" and "lots of love." LOL was released on July 11 with the lead track "Navillera" 너 그리고 나, and reportedly had more than 60,000 pre-ordered copies worldwide. On July 19, GFriend earned their first music show win for the album's single "Navillera" on "The Show."
Towards the end of the year, YouTube listed the top 10 Kpop music videos most beloved by South Koreans in 2016. "Rough" and "Navillera" were ranked 2nd and 10th respectively. "Rough" and "Navillera" were also ranked 2nd and 11th respectively in the 2016 Bugs Year-End Top 100. "Rough" was also ranked 13th in Billboard's 20 Best K-Pop Songs of 2016: Critic's Picks. At the end of the year show 2016 KBS Song Festival, the peak viewer ratings for the whole show were recorded during GFriend's "Rough" performance at 10.3%. "Rough" also became the most downloaded song in 2016 according to Gaon Chart's 2016 Year End Download Chart.