Sungyeol's ideal type is someone who isn't deceiving, easy-going, and cute.
Seongyeol begged the hairstylist to dye his hair in green for the "Before The Dawn"
Sungyeol once got mad at L because he would not scratch his back. Sungyeol felt like dying from the itch that time.
Sungyeol had cried at a wedding of a relative whose face he had never seen before.Sungyeol actually cried while looking at the background for the wedding.
For Sungyeol, his nose is his best body part.
Sungyeol loves to tease his members and their managers.
Sungyeol once wore a bathrobe and sunglasses on the airport with Infinite after losing a bet.
Sungyeol has Dyslexia, and so does his brother Golden Child's Daeyeol.
Sungyeol was originally planned to debut as an actor.
Sungyeol was the last member to join Infinite.