Craig is a middle aged police officer, he rarely has fun and works almost constantly, even at home. He rarely loses his tired expression and overworks himself daily. 

 

A case of an assault that gravely injured his wife was left unsolved, causing him to act over obsessive with cases, further pursuing them long after his colleagues have given up. His constant serious attitude, lack of emotion, and robot like work ethic earned him the nickname of "Robo" with the younger officers in his department.

 

Underneath all his stress and emotional baggage rests a cop that just wants desperately to help people and do his part. His selfless desire to help and his own personal self interests do tend to blend together uncontrollably a lot. But both are there.