Alien Hornet

The Alien Hornet is a Hardmode, post-Lunatic Cultist enemy that is summoned by the Vortex Pillar during the Lunar Events, which are spawned by a opened portal in groups of two. If not killed fast enough, it will fairly quickly grow into an Alien Queen. They also grow from the Alien Larva that spawn from the death of an Alien Queen.

History
Frelon Alien