Originally bred to be a fighting dog, the Deutscher boxer can be very intimidating and has been known to take down animals such as bears and bulls. They are bred for their intelligence and obedience but can be very docile and friendly as well.
This isn’t a dog you should lose control of especially around the kids. Train them right and they can be really loyal. Deutscher boxers can also be trained as seeing-eye dogs for the blind. This should obviously be left to professional trainers though of course.