• Tinggi: 174 cm (5’9″)
• Berat: 57 kg (126 lbs)
• Golongan Darah: AB
• Sub-Unit: NCT 127, NCT Dream
• Posisi: Vokalis utama, Penari utama
• Nama Panggilan: HC, Full Sun, Dongsookie, Donkey (Donghyuck+Monkey), Banchan (Sidedish), Pudu, Chocoball, Haehae, Gochujang, Haejjani, Totoy, Haejjyani, Donyeok, Sun-D, Hae-D.
• Instagram: @fullsun_nct
Fakta Menarik Heechan
• MBTI: ENFP
• Keahlian: Menari, Sepak Bola, Menulis Lagu, Bermain Piano