First post here and I need your help to find a title of an old anime. Probably late 80's early 90's. It was about a boy that was raised by a combat robot in a world devastated by war. The robot was "kill" by some boos called beast master or something like that. Later on the boy was hunting some giant monster robot and inside that robot he found another warrior robot that needed to activate his star that was nothing more than a satellite. The thing is that the boy and the warrior robot must bond as a fighting pair to be completely effective. The hair of the boy is blonde and long. That's all I can remember. Do you have any idea of the title.