Chimmy is a character from the popular South Korean boy band BTS's merchandise line, known as BT21. Created in collaboration with LINE Friends, Chimmy is a cute, yellow puppy who wears a hoodie. He represents the personality traits of being playful, energetic, and passionate about his dreams. Chimmy is one of the eight characters in the BT21 universe, each designed by a member of BTS. The character embodies the spirit of hard work and determination, making him relatable to fans. Chimmy's design and backstory resonate with many, contributing to his popularity among BTS fans worldwide.