Hongjoong named Bigbangs G-Dragon and Zico as his role models. Japan being so close to Korea many kpop idols are from Japan. Except Hwasa maybe for making it in a shallow superficial industry while not fitting the beauty standards.
2Seonghwa Seonghwa who attracts a lot of attention with his facial.
However their talents does not end there. Not really role models but I do admire some idols for being reasonable hardworkers and focused in their dreams like Jonghyun Woozi Seungcheol Bang Chan RM CL IU Vernon and many others. In fact some of them can even play instruments andor sports. Moreover several of these K-pop idols can also act on screen.