The Box-a-Shar is not a purebred dog. It is a cross between the Boxer and the Chinese Shar-Pei. The best way to determine the temperament of a mixed breed is to look up all breeds in the cross and know you can get any combination of any of the characteristics found in either breed. Not all of these designer hybrid dogs being bred are 50% purebred to 50% purebred. It is very common for breeders to breed multi-generation crosses.
"This is our Boxer / Chinese Shar Pei dog. He's not quite 1 year old in this picture, but getting close. His name is Sole (pronounced So-Lay, American Samoan for Mister). Sole is a beautiful intelligent boy. His personality is very loyal and calm."