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July 30, 2026Short & citedBlog
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Music Box • Musician

Changbin

Changbin is the stage name of Seo Chang-bin, a South Korean rapper, singer, songwriter, and record producer.

Updated July 30, 20261 min readCited sources

Changbin is the stage name of Seo Chang-bin, a South Korean rapper and producer. He is best known as a member of Stray Kids and its production sub-unit 3RACHA.

Who is Changbin?

Changbin (born Seo Chang-bin on August 11, 1999, in Yongin, South Korea) is a rapper, singer, songwriter, and record producer. He debuted as a member of Stray Kids, a boy group formed by JYP Entertainment in 2017, and also works with the group's in-house production team 3RACHA.

Musical role and contributions

Changbin serves as Stray Kids' main rapper and is a key contributor to their music through 3RACHA, where he writes and produces tracks. His work spans rapping, singing, and production, making him a central creative force in the group's sound.

Personal details

Changbin's birth name is Seo Chang-bin. He was born on August 11, 1999, in Yongin, South Korea. Profile sources list his height as 167 cm (5 ft 6 in). He is also known by the alias SpearB within 3RACHA.

In short

  • Changbin is a South Korean musician known professionally by his mononym.
  • He is a member of Stray Kids, formed by JYP Entertainment in 2017.
  • He is also part of 3RACHA, Stray Kids' production sub-unit.
  • Born August 11, 1999, in Yongin, South Korea.

Quick questions

Who is Changbin?
Changbin is the stage name of Seo Chang-bin, a South Korean rapper, singer, songwriter, and record producer best known as a member of Stray Kids and 3RACHA.
How old is Changbin?
Born on August 11, 1999, Changbin is 26 years old as of July 24, 2026.
What is Changbin's real name?
His real name is Seo Chang-bin.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Changbin
    Supports: Birth name, stage name, birth date, nationality, occupation, membership in Stray Kids and 3RACHA.
  2. Kpopping — https://kpopping.com/profiles/idol/Changbin
    Supports: Role in Stray Kids, occupation, and profile information.
  3. Wikipedia — https://de.wikipedia.org/wiki/Changbin_(Stray_Kids)
    Supports: Birth date, birthplace, Stray Kids membership, 3RACHA membership, and alias information.
  4. Nolae — https://nolae.eu/blogs/kunstler/changbin-stray-kids-profil
    Supports: Height and profile details.
  5. Kprofiles — https://kprofiles.com/changbin-profile/
    Supports: Height, birth name, birthday, and Stray Kids/3RACHA affiliation.
  6. Kprofiles — https://kprofiles.com/stray-kids-members-profile/
    Supports: Stray Kids membership and Changbin’s listed role and height.
  7. Genius — https://genius.com/artists/Changbin
    Supports: Role in Stray Kids, 3RACHA involvement, and alias SpearB.