This 17-year-old Busan boy Doyoon is also known as SEVENTEEN's mom, with 'DoDo' as his nickname.The boy with a sweet personality and smile has been training for the longest time out of all.He leads and motivates other trainees along with strict Seung Cheol (a.k.a SEVENTEEN's dad).He is the man of men with 'Man should not do shameful conduct' as his motto.He says guys have the responsibility to protect girls and he does his best for his people.He tries to be a prudent and comfortable person and trains hard to acheive his dream as a SEVENTEEN member.- l Song that identifies me: Norajo - Hyung: It is a song that says 'Life is not finished yet'. I'd like to comfort SEVENTEEN members as well as myself with this song whenever we fall on hard times.