Terraria Wiki

Miss the old Hydra Skin? Try out our Hydralize gadget! Visit the preferences page while logged in and turn on the gadget.


Terraria Wiki
Desktop versionConsole versionMobile versionNintendo Switch versiontModLoader version
Desktop/Console/Mobile/Switch/tModLoader-Only Content: This information applies only to the Desktop, Console, Mobile, Switch, and tModLoader versions of Terraria.
Flow InvaderHardmode exclusive
Flow Invader.png
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
AI TypeFlow Invader AI
Damage70/140/210 (melee)
120240360 (ranged)
Max Life1500/3000/4500
KB Resist97%/97%/98%
BannerFlow Invader BannerFlow Invader Banner
Immune toConfused

The Flow Invader is a Hardmode, post-Lunatic Cultist Enemy that spawns near and is summoned by the Stardust Pillar during the Lunar Events. When it spawns, three smaller Flow Invader Minionminions will appear one at a time and begin orbiting it. The Flow Invader utilizes these as attacks, sending them as 1-2 high-speed projectiles towards the player. The orbiting minions will reappear over time.


  • The Flow Invader will launch all of its remaining minions at the player upon death.
  • The Flow Invader's minions use the internal Projectile ID 539.
    • The Flow Invader's minions are also present as an unused NPC, having a graphically identical NPC 408NPC 408.


  • If the Flow Invader is killed shortly after it spawns, fewer minions will be launched at the player.
  • Trying to kill this enemy somewhat on-screen will give a player enough reaction time to dodge the projectiles.


  • Due to its shape, name, AI, and attack method, it is likely a reference to the arcade game Space Invaders.
  • The BestiaryBestiary entry for the Flow Invader: "A cosmic jellyfish-type creature infused with abundant celestial energies which summons smaller minions to serve as its weaponry."