Hormagaunts

A Hormagaunt is one of the most dangerous Tyranid creatures in a Hive Fleet. Not because of their size or particular viciousness, but because they multiply out of control. When attacking a planet, Hormagaunts are seeded onto the target world by Mycetic Spores. They quickly reproduce and then rampage across the planet killing anything they find. The Tyranid Hive Mind does not need to direct the Hormagaunts to attack targets since they will instinctively feed on anything they can find. This is due to the ravenous appetite that defines them from the moment they are spawned.