I have Character favorites though.
My first love - from the Heirs, Choi Young Do. Strong character, Abrasive yet in truth, sensitive and lonely. Are all tough guys like that? Seriously, my favorite parts are in the convenience store. How he knows which one is the most delicious dessert because he's eaten them all. Why he always eats at a convenience store even if he's rich and how he takes care of her when he needs to. I cried at the scene where Eun Sang's mom fed him his first home cooked meal in such a long time.
Second Love and not so far away - Kang Woo of The Master's Sun. Don't get me wrong, I have a crush on L as the young Joo Jong Won and the adult Joo Jong Won but Kang Woo's unrequited love for Taye Yang just seals the deal for me. My favorite part was when he went jogging when he couldn't admit to Taye Yang that he did like her for real. Plus when he followed her around the graveyard hoping that she would call out his name.
3rd Love - Park Soo Ha of I Hear your Voice. Imagine someone in love with you, keeps his promise and looks for you relentlessly for 10 years. He loses his memory yet still manages to become in love with the same woman. Fulfills his promise of never being a monster, never becoming a beast. That's just amazing for me.
Any character favorites?
Just in case you're wondering, Choi Young Do is Kim Woo Bin in real life.
Kang Woo is Superstar K winner Seo in Guk
Park Soo Ha is Lee Jong Suk
P.S. I am currently watching School 2013 and Lee Jong Suk and Kim Woo Bin are in it, I am just about to watch episode 3 where Kim Woo Bin appears.
Plus I want to watch No Breathing where it's Lee Jong Suk and Seo in Guk are in a movie together about being rivals in swimming. I guess, they are some of the guys to watch as of now. I should do a special mention of Lee Min Ho and the guy from You who came from the Stars and The Moon Embraces the Sun - Kim Soo-Hyun but the 3 guys above are the ones topping my list character-wise.