Elena from Shitsuren Chocolatier! Liked her since the first episode, so cute :)
Park Seon Woo from Nine: Nine Times Time Travel. He's just a fascinating and intense character, and I loved him from the start. (He's a hottie too!)
I think I liked Kim Dong Ah from Wild Romance the best ^-^
My last drama was I need romance 3 and the character i love Nam Goong Min
That would be I Need Romance 3 and my fave character was Sweet Potatoe - Sung Joon's character. He wasn't the most realistic character ever but I loved his personality.
Stars falling from the sky .. my fav was Parang I really liked this kid :p
Ojakgyo Brothers

Hwang Tae Pil and Hwang Tae Hui
My Girlfriend is a Gumiho
Cha Min Sook and Director Ban
Finding Mr. Destiny - Seo Dae Ryung ( the lead character's dad he was awesome!)
Ugly Alert - Gong Hyeon Seok (I love his introverted personality-it was interesting)
Crown Prince Seo Hyun and Queen Insun from Cruel Palace - War of Flowers
I believe his name was Cheng Gang? Gosh, I'm horrible with names so I'm not sure. He was the father of the main female lead though. - Smiling Pasta
my favourite(in comedy way) is this guy with shorter hair who is singing with those 2 girls, Kdrama - Smile you

https://www.youtube.com/watch?v=OwCalOEpL8k

the best drama ever
Choi Chi Hoon from White Christmas.