Yes he is , if you have played football with him directly you will know the real Diego costa .
No Hazard, just no. I dont feel safe if I playing football with him and I dont want. You know, he can punch me any time when I don't aware

He has a bad attitude only when he play footbal on the field, he did not bring that bad attitude to real life / in daily activities, did you ever heard diego costa punch someone outside football field? No i am sure you never heard it.
Isnt it worse if you has bad attitude and showing it on the pitch in front of millions people who watching the game? Well you know kids watching it too. I admit he was good in Atletico, but not in Chelsea and even Spain.
read this full story about thiago motta talking about how complicated diego costa off the pitch an on the pictch
each person have different attitudes , just respect it don't blame on it. it was a gift from the god . admit about diego costa class playing football and we can end this talk off . however a good attitude did not guarantee you will not acting like a bite man luis suarez