Question

마틴은 못생긴 얼굴에 성미가 까다로워요 When mentioning additional qualities or entities, -에 can be used in the way similar to 'in addition to' or 'on top of'. In this usage, -에 can occur replaced by -에다(가) in colloquial speech.

Accepted Answer

Martin has an ugly face and, on top of that, a picky temper

Front	마틴은 못생긴 얼굴에 성미가 까다로워요
Back	Martin has an ugly face and, on top of that, a picky temper
Notes	When mentioning additional qualities or entities, -에 can be used in the way similar to 'in addition to' or 'on top of'. In this usage, -에 can occur replaced by -에다(가) in colloquial speech.

Top 에 마틴은 못생긴 얼굴에 성미가 까다로워요 Martin