John Juniper is described as a man of many talents. He is dripping with charm, talent, and charisma, which he often uses to mask his true self. Without these, he is an egocentric, arrogant, and vainglorious man, often describing himself as the “World’s Greatest Actor”, and referring to the Agent as an “extra, trying to upstage the star”. Also obsessed with theatre and acting, he has a relatively short temper, and gets irritated easily when he doesn't get his way.