Megadodo Publications are the publishers of the wildly popular Hitchhiker's Guide to the Galaxy. Ford Prefect was employed by them as a researcher for the guide. It is one of the great publishing corporations of Ursa Minor. In Mostly Harmless it is bought out by Infinidim Enterprises, a group which Ford detests due to it association with the Vogons (such as the Vogon in disguise Van Harl or Zarniwoop Van Harl in the radio series).