Changbin

Changbin, born Seo Chang-bin on August 11, 1999 in Yongin, South Korea, is the main rapper, vocalist, and producer of Stray Kids. As one of the three members of the self-producing unit 3RACHA (alongside Bang Chan and Han), he writes, composes, and produces music under the alias SPEARB, contributing significantly to the group's distinctive sound. His rapid-fire rap delivery, with complex internal rhymes and emotionally charged verses, has established him as one of the most technically accomplished rappers in fourth-generation K-pop.

Changbin's passion for music was fueled by a deep love of hip-hop that developed in his teenage years. He has cited artists like Eminem, Biggie Smalls, and Korean hip-hop pioneers as major influences on his style. Before debuting with Stray Kids, he trained extensively at JYP Entertainment, developing not only his rap skills but also his production abilities. This dual role — as both a performer and a behind-the-scenes creative force — gives him a unique position within the group.

Off stage, Changbin is known for a personality that contrasts sharply with his intense "main rapper" image. Fellow members and fans frequently describe him as the most emotionally sensitive member of the group, someone who feels deeply and expresses those feelings through his art. He is also known for his commitment to fitness, with his physique transformation documented extensively on social media. His passion for reading and writing poetry directly informs the lyrical content of his rap verses.

Changbin's contributions to Stray Kids go beyond performance. As a core member of 3RACHA, he has co-produced some of the group's most beloved tracks, including "MIROH," "God's Menu," and "Thunderous." His ability to translate raw emotion into technically precise rap is a defining element of the Stray Kids sound, and his creative partnership within 3RACHA has driven the group's artistic identity since debut.