The Dagon Overlord is a powerful Tyranid synapse creature similar to a standard Hive Tyrant that has been seen leading the Tyranid assaults of Hive Fleet Dagon in the Jericho Reach. It is unknown whether the Overlord is a new type of Tyranid bioform that will be deployed by the Hive Mind in all Hive Fleets, or whether it is a single creature wholly unique to the activities and circumstances of Hive Fleet Dagon.