I've cared for a couple of children with this type of personality. It is exhausting, but they must be shown the consequences for their actions. They will learn what is acceptable and behave accordingly. When a child deliberately breaks or destroys a toy it is given to the parents and they are responsible for replacing it with the same or something similar worth the same amount. You would be surprised how quickly the parents start to work on respectful behaviour at home and soon the child is on the right track.

One girl I cared for did do artwork with her poop in her playpen during nap time. I would check on her and 5-10 mins later check again and she had pooped and wiped it all over the mesh sides of the playpen. When her father picked her up at the end of the day the playpen was outside the front door. I told him what happened and he laughed and joked that he thought she was going to be an artist and that he felt sorry for me for having to clean it up. He stopped laughing when I told him it was their playpen and he had to take it home.

I have also had a couple of children that repeat what I say and it is very annoying. They don't seem to understand when I tell them that they need to stop. One of the children was diagnosed with high functioning autism (and adhd) and the other had a serious learning disability. As the children grew older in my care I would mention to the parents that their children were not developing mentally and emotionally as the others in their age group were. I always tell them that this is my observation and that I am not a specialist in this field and that they need to get professional help.
Most of the time parents don't notice that their child is developing differently than others. With early diagnosis they can learn important tools to help their child make their way through life.