Jack is Hank's barber who is mentally unstable. He runs his own barbershops called also Jack's Barbershop. He has been Hank's barber for over 25 years. Jack has many mental health issues such as having a short fuse and doing things which are irrational. Dale Gribble once revealed to Hank that Jack was arrested for running naked with a straight razor and a barber pole due to his mental instability.