We've known them by their screen names this whole time? IMAGE Instagram (L) management_soop (R) rain_oppa 

It isn't uncommon for celebrities to change their real names when they choose to enter the entertainment industry. And the same goes for our fave K-drama oppas! For some, they opt for names that have more star power or are more memorable than the ones they were given at birth. Others don't really have a choice because there already might be another famous person with the same name! To feed your curiosity, here are the real names of some of Hallyu's most popular actors:

Kang Ha Neul

Real name: Kim Ha Neul

Park Seo Joon

Real name: Park Yong Kyu

Gong Yoo

Real name: Gong Ji Cheol

Hyun Bin

Real name: Kim Tae Pyung

Rain

Real name: Jung Ji Hoon

Won Bin

Real name: Kim Do Jin

Kim Woo Bin

Real name: Kim Hyun Joong

Cha Eun Woo

Real name: Lee Dong Min

Yoo Ah In

Real name: Uhm Hong Sik