a prince who looks hard and built on the outside but is a very kind man, choosing to treat the lower ranks with respect rather than diminishing them as people. he has never really talked about his family or his past, though he is filthy rich he does not like to talk about why or how. minhyuk likes to have an active life, and is not the gentlest when in bed- due to this he only will bed those who are aware and okay with his rougher nature. 

if you want to get on his bad side, ask about his family. that and being disrespectful are the only ways to really bring out his ugly side.