United Cube Concert – One (Korean: 유나이티드 큐브 원) was the second domestic concert of South Korean music label Cube Entertainment in 2018. A total of 33 Cube artists performed, including Hyuna, Jo Kwon, BtoB, CLC, Pentagon, Triple H, Lai Kuan-lin, Yoo Seon-ho and (G)I-dle. The concert took place at KINTEX in Seoul with an audience of 8,500 people.
| Actor | Role |
|---|---|
 Kim HyunaSelf | Self |
 Jo KwonSelf | Self |
 Seo Eun-kwangSelf | Self |
 Lee Min-hyukSelf | Self |
 Lee Chang-subSelf | Self |
 Lim Hyun-sikSelf | Self |
 Peniel ShinSelf | Self |
 Yook Sung-jaeSelf | Self |
 Jung Il-hoonSelf | Self |
 Lai Guan-linSelf | Self |
 Yoo Seon-hoSelf | Self |
 MIYEONSelf | Self |
 MINNIESelf | Self |
 SOYEONSelf | Self |
 YUQISelf | Self |
 SHUHUASelf | Self |
 Seo Soo-jinSelf | Self |
 Kwon Eun-binSelf | Self |
 Elkie ChongSelf | Self |
 Jang Ye-eunSelf | Self |
 Sajakul ChonnasornSelf | Self |
 Choi Yu-jinSelf | Self |
 Chang Seung-yeonSelf | Self |
 Oh Seung-heeSelf | Self |
 Jo Jin-hoSelf | Self |
 Kim Hyo-jongSelf | Self |
 Jung Woo-seokSelf | Self |
 Yuto AdachiSelf | Self |
 Yeo OneSelf | Self |
 Kang Hyeong-guSelf | Self |