Rudi is a High Priest of the Order of the Psychedelic Monks. He and Spider Dijon quarrel often, but are very close despite having starkly different personalities. Rudi's behaviour and attitude is extremely puritanical; he thinks of alcohol and women as "distractions" in stark contrast to the animalistic nature of Spider Dijon, and even went so far as to say that he considered all women "strange and evil". Whenever he is asked for his name, Rudi's initial response will often be "I go by many names..." followed by a list of odd names. Some of his many names include "Shatoon, Bringer of Corn", "Mickey Nine, The Dreamweaver", "Photoshop", "Trenu, The Boiler", "Marjorie Keek", "Mystery Man", "The Shadow Dweller", "Diviner of Mysteries", "Rudi the Prudey", "Miraculous Mark", "Domino, the Bounty Hunter", "Clive" and "Cillit Bang", He is often called "Peppercorn" by the Dutch. A similar character, Howard's uncle Pedro, appears in the radio episode "Tundra", also claiming to go by many names.