Sungjong's nicknames include Hamster (bc of his eyes) and Grandpa (bc he's always tired)
Sungjong would love to be a DJ if given the opportunity
Sungjong doesn't want to be ordered around just because he's the maknae.
Sungjong has a brother who is three years younger than him.
Sungjong wanted to keep the desert fox on "Come back Again" MV as his pet.
Sungjong didn't get along with Woohyun in his trainee days
Sungjong joined Woollim Entertainment because of Nell
If Sungjong could choose a superpower, he would choose teleportation
Sungjong is ambidextrous
Sungjong's favorite color is yellow