Jack is average size, middle aged man with fairly muscular bodybuild and two giant creepy eye tattoos in his shoulders. Due to the many experiment that were used on him, his hair and skin color have changed into different. Before the experiments he hade white skin, short black hair and small stubble, but after his skin turned into brown, hair and stubble growed londer and changed into pink. His hair now resembles Frankys pre timeskip hairstyle with long mullet and long goatee with sideburns.