"Man who chase the idols" is "빠돌이"(ppa-do-ri) in Korean.
Man for the enthusiastic of chasing the idol and athletes. Sense that you look down is also included. Against women is 빠순이 (Bba sun e). 빠순이 (Bba sun e) but there is a sense that female fans of teens, in recent years, manners bad past enthusiastic, meaning even have that. Collectively such men and women of the fan, called 극성팬(Geukseong Pan)