Weki Meki is a South Korean girl group formed by Fantagio in 2017. The group consists of eight members: Ji Su-yeon, Elly, Choi Yoo-jung, Kim Do-yeon, Sei, Lua, Rina, and Lucy. The members started as trainees under Fantagio i-Teen, a rookie talent development program under Fantagio Entertainment, known as i-Teen Girls.
In 2015, i-Teen Girls members Kim Do-yeon, Choi Yoo-jung, Lua, Lucy, and Elly (as well as former trainees Chu Ye-jin and Lee Soo-min) had numerous cameos in label mates Astro's predebut online web drama To Be Continued. Elly (as Jung Hae-rim), Choi Yoo-jung, Kim Do-yeon, and Sei (as Lee Seo-jeong, then under LOUDers Entertainment) competed the Mnet survival television program Produce 101, which aired from January 22 to April 1, 2016. Choi Yoo-jung and Kim Do-yeon were ranked in the final top 11 contestants and debuted in the project girl group I.O.I.
On July 6, 2017, Fantagio revealed that their new girl group would be called Weki Meki. The group released their debut extended play, Weme, on August 8, 2017. The EP contains six tracks with the lead single titled "I Don't Like Your Girlfriend." The album also features lyrics written by Choi Yoo-jung. A month later, a limited "B Version" of their debut EP was physically released. In November, according to Gaon Music Chart, the EP sold over 47,000 physical copies since its release and marking the highest-selling album by a girl group that debuted in 2017.
On February 6, 2020, Fantagio Music confirmed that the group would have a comeback with the digital single album Dazzle Dazzle on February 20 and confirmed that member Yoojung would join after her hiatus from October 2019. On May 29, Fantagio released a teaser image for the group's third EP, Hide and Seek, released on June 18. It consists of five songs, including the title track "Oopsy" and the previously released single "Dazzle Dazzle."
Meanwhile, WekiMeki released a teaser for their upcoming mini-album, NEW RULES, on September 21. The album is set to be released on October 8, 2020, at 6 PM KST.