For those who does not know : Poppin Prodigy is old Jeon 'Jay' Jihwan (The Boss' maknae) title.

He is called Poppin' prodigy for a reason ;D

Dance Battle from 11.11.2010 (I know it's old, but here's my favourite  what shows Jay's dancing skills)

Jay vs. YooJoon and also look properly, you'll see Shinee's members too *-*