SPECTRUM (스펙트럼) is a boy group under WYNN Entertainment. They were expected to debut in October 2017 but was delayed due to their participation on MIXNINE. They released their first mini album Be Born on May 9, 2018 and officially debuted on May 10 through their debut stage on M Countdown.
- Dongyoon (동윤)
- "Dear My" (2018)