Viltvodle VI is a steamy backwater planet in the Milky Way galaxy. It is inhabited by the Jatravartids who worship the Great Green Arkleseizure. However, in recent years their religion has largely been adopted and taken over by offworlders, particularly the charismatic new priest Humma Kavula.
Zaphod Beeblebrox dragged Trillian, Arthur, Ford and Marvin to Viltvodle VI to taunt Kavula, a former rival in the presidential campaign, but instead had one of his heads taken hostage by the cunning priest. Vogons then invaded the planet and kidnapped Trillian.