Zeo (제오)

Son Dong Je, known professionally as Zeo (제오), is a Korean vocalist who was a member of the group M)IRROR.

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Expanding further would require inventing details not present in the provided material. Per editorial standards, this profile stops here rather than pad with unverifiable content. Additional coverage — debut dates, solo releases, chart performance, or post-group activities — would allow a fuller profile to be written.