

On June 7, 2018, A.C.E released their repackaged album, A.C.E Adventures in Wonderland, with their title track "Take Me Higher". They would have debuted in a temporary boy group, but the debut was cancelled later that year. Group members Kim Byeongkwan and Donghun won 4th and 8th place respectively on survival show Mix Nine in January 2018. On March 15, 2018, the group released a special single titled "5TAR (Incompletion)", with the song serving as a gift to fans after their brief hiatus to join The Unit and Mix Nine. A.C.E released their second single album Callin' on October 19, 2017. On May 23, 2017, A.C.E released their debut single album Cactus, a Hardstyle song produced by Zoobeater Sound. 2017–2018: Cactus, Callin, and A.C.E Adventures in Wonderland Ī.C.E at the 2018 Incheon Airport Sky Festivalįrom left: Donghun, Chan, Wow, Kim Byeongkwan, Jun He also trained under JYP Entertainment alongside Chan. Kim Byeongkwan participated in Season 1 of K-pop Star but was eliminated during the final round of casting. Wow trained at YG Entertainment alongside Winner before later moving to CJ E&M, where he met Jun and Donghun. Donghun competed on Superstar K5 prior to becoming a trainee under CJ E&M, and later appeared on I Can See Your Voice as well, winning the episode and earning high praise from Got7's JB. He appeared on Mnet's I Can See Your Voice as Kangta's look-alike. Jun trained under Jellyfish Entertainment alongside VIXX before transferring to CJ E&M. 1.4 2021–present: New agency, Siren : Dawn, Changer : Dear Eris and military enlistments.

1.3 2019–2020: Under Cover, Under Cover : The Mad Squad, and HJZM : The Butterfly Phantasy.1.2 2017–2018: Cactus, Callin, and A.C.E Adventures in Wonderland.
