; formerly known as K.A.R.D
, an acronym for King, Ace, JokeR, & HiDden) is a South Korean four-member co-ed group under DSP Media
. They officially debuted on July 19, 2017 with their first mini album Hola Hola. Prior to their debut, the group released three pre-debut singles: "Oh NaNa" on December 13, 2016, followed by "Don't Recall" in February 16, 2017 and "Rumor" in April 24, 2017.