Haechan, a 173 cm (5'8") tall idol, has a slim and lean physique. His hair color and style can vary depending on promotions and comebacks, with almond-shaped eyes in dark brown. His charming smile features a prominent cupid's bow and a dimple on his right cheek. Haechan's smooth, fair skin is often emphasized with makeup for performances and appearances. He is known for his stylish and trendy fashion sense, experimenting with various outfits, from casual streetwear to more formal attire.