Changbin
As Stray Kids’ powerful rapper, producer, and one-third of the legendary 3RACHA, Changbin is a powerhouse in every sense of the word. But there’s more to him than just fast-paced bars and biceps. Changbin brings his unique blend of fierce talent and soft-hearted goofiness to Stray Kids—and we love him for it!


Rap legend
Changbin doesn’t just rap; he unleashes lyrical storms. His rapping skills are legendary, rapid-fire flow, incredible breath control and intense delivery, bring a fierce energy to every track he’s on. He doesn’t just rap quickly, he infuses each line with raw emotion, seamlessly shifting from powerful aggression to moments of introspection. His lyricism stands out, often tackling themes of ambition, resilience, and self-discovery, giving listeners a glimpse into his inner world.
And let’s not forget his legendary “Bintros”: powerful, hyped-up, and impossible to ignore, they add a bit of dramatic flair and pure adrenaline to some of the most famous Stray Kids’ songs right from the first beat.
When Changbin’s in the zone, his verses are so fierce that even his fellow members look like they’re trying to keep up!

Exercise king and multitalented genius
If there’s one thing Changbin loves as much as music, it’s the gym. Known as the group’s resident gym expert, Changbin doesn’t let a single day go by without a workout. His passion for the gym is very real and he’s got the arms to prove it – fans and members alike never miss a chance to joke about his biceps (which, let’s be honest, could probably lift the entire fandom).
With a dedication to lifting weights and perfecting his form, Changbin’s workout routine seems to be one of his biggest joys. He’s not shy about sharing his gains, often flexing his arms or laughing about how his fellow members call him the group’s “muscle man.” His love for the gym is so strong, in fact, that he might be a personal trainer in an alternate universe.
He even inspires STAYs to hit the gym…or at least to consider it while watching him crush his workouts. And yes, he’s often found hyping up his members to train harder too!
Changbin is Stray Kids’ rap virtuoso, but he’s so much more than just a rapper – he’s also a lyricist, vocalist, and producer, making him the full musical package.

As part of the producing trio 3RACHA, Changbin spends countless hours crafting lyrics, beats, and melodies that give Stray Kids their bold, signature sound.
Besides rapping and producing, Changbin’s got another musical card up his sleeve: a soft, almost romantic singing voice that could make anyone swoon! His voice, warm and tender, brings a whole new depth to the group’s ballads and softer tracks, making him a true double threat. It’s the perfect Changbin paradox: one moment he’s all fiery bars, and the next, he’s serenading us with vocals that feel like a cozy blanket.

Cute "man of principles"
Changbin may be known for his intense rap and muscle-bound energy, but he’s also secretly one of the biggest sweethearts in Stray Kids. Behind that fierce exterior is a soft, caring and often adorably cute personality. Changbin has a serious soft spot for his family, friends, and especially his fellow members, often showing affection through small, thoughtful gestures or words of encouragement. Sure, he’s intense on stage, but backstage he’s the guy who’ll listen to his members’ worries or cheer them up with goofy antics.
But Changbin isn’t just fierce, funny and cute, he’s also a “man of principles” (jutdae in Korean). He has strong values that guide him, from his dedication to his craft to the importance he places on loyalty and authenticity. He’s openly supportive and protective of his group, always encouraging his members with sincerity and holding himself to high standards in both music and personal growth. Whether it’s through hard work in the studio, his commitment to fitness, or simply the way he treats those around him with kindness and respect, Changbin consistently demonstrates that staying true to one’s principles is the foundation of strength and character.

Fun facts, oddities and quirks
Birthname: Seo Chang-bin
Birthday: August 11, 1999 in Yongin, South Korea
He has an older sister born in 1997 called Jae-hee
He’s part of the group sub-unit 3RACHA with Chan and Han
His stage name in 3RACHA is SPEARB
He’s a rapper, a lyricist, a producer and he dances really well
His laugh is the funniest, most contagious of all the members
His most used nickname is Binnie
He has a plushie named Gyu which he can’t sleep without
His voice can be really, really loud
He’s “always hungry”!
He is a fast thinker
He has a lot of allergies, including cat and dog fur, dust and asian white birch
He doesn’t like doing things alone
When he was a kid he was very fragile, so now he works out to improve his health
He became a meme king with his Jutdae meme and his Uri eomma eomma god meme
He is a die hard fan of Samsung and consistently promotes the brand despite all the other members having iPhones
He is close friends with a lot of idols (Dino from Seventeen, Wooyoung from ATEEZ, Yeonjun from TXT and many more)
He is very close with Chaeryeong (ITZY), to the point that they are like siblings and know each other’s parents
Seungmin described him as an “iron hand in an iron glove“, and said that he has never seen him break down
Since 2024 he shares an apartment with Hyunjin




