“Let’s do it until it’s impossible!” Dongyoon (동윤) was a South Korean singer and songwriter under WYNN Entertainment. He was a member of the boy group SPECTRUM.
In October 2017, he became a contestant on the survival show MIXNINE as a contestant and representative of his agency and boy group SPECTRUM. He was eliminated in episode 13 after ranking 21st place.
He officially debuted as a member of SPECTRUM when they released their debut mini album Be Born on May 9, 2018. Their debut was initially meant to be in October 2017 but was postponed due to his participation in MIXNINE.