ZEROBASEONE
A nine-member project boy group formed through the 2023 Mnet audition program *Boys Planet* and debuted that year. The group is also known by the abbreviation ZB1.
Sung Han-bin, leader of ZEROBASEONE, has a name meant to carry both parents' surnames: his father's "Sung" and mother's "Han," joined as "Sunghan," plus "bin." But Korean law bars registering both surnames, so officially his surname is "Sung," given name "Han-bin."
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