G-Dragon of Big Bang (Photo courtesy of YG Entertainment)

G-Dragon, leader of five-member boy band Big Bang, has topped the list of the 20 most hardworking idols ranked by Forbes Korea.

The annual survey covered the K-pop idols’ activities from 2009 to 2010. The list is dominated mostly by leaders of various K-pop groups.

Singer-songwriter G-Dragon, released his solo album “Heartbreaker” and held his solo concert “Shine A Light” last year.

“Heartbreaker” won the Album of the Year at the 2009 Mnet Asian Music Awards (MAMA).

He is followed in the ranking by U-Know, leader of boy band TVXQ; Taeyeon, leader of girl group Girls Generation; and Nichkhun and Taecyeon, members of 2PM.

Besides singing, U-Know starred in the drama series “Heading to the Ground” last year. In March, he also starred in the Korean leg of the tribute concert for Michael Jackson.

Super Junior’s leader Leeteuk came in sixth followed by 2AM’s Jo Kwon, After School’s UEE, 2NE1’s CL and KARA’s Jiyeon.

SHINee member Minho came in at 11th, the only member of the boy band who entered the list. Minho is a regular member of Dream Team, a TV game show.

He is followed by Gain of Brown Eyed Girls, Daesung of Big Bang, Hyuna of 4Minute, Sunny of Girls Generation, Eunhyuk of Super Junior, Jessica of Girls Generation, Hara of KARA, Yoona of Girls Generation and Narsha of Brown Eyed Girls.

These idols have been working in different fields aside from singing. Some are hosting their own radio talk shows; others are also in demand as commercial endorsers in South Korea.