unlikeable character has tons of character development and becomes likeable

unlikeable character has tons of character development and becomes likeable as the drama progresses.

please mention the name of the character.

thanks in advance.

I hold grudges...

But I guess these would fit:

Be Loved In House: I Do - Jin Yu Zhen
(and the original Just You - Qi Yi)

Assistant of Superstar - You Xi

Don't Say No -Fiat. He was downright detestable in his first appearance in TharnType 2, but he had some really good development, and the reveal about his trauma really helped explain his motives which helped as well. Not saying I forgive him for the stuff he did, but in the end, I did like him as a character.

You're Beautiful - Tae Kyung

Theory of Love - Khai

• Chief Kim - Seo Yul
• Bridal Mask - Lee Kangto