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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
MothronHardmode exclusive
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
AI TypeMothron AI
Damage80/160/240 (contact)
4080120 (slow charges)
100200300 (fast charges)
Max Life6000/12000/18000
KB Resist80%/82%/84%
BannerMothron BannerMothron Banner(Desktop, Console and Mobile versions)
Immune toConfused
Coins5 GC12 GC50 SC
Mothron EggHardmode exclusive
Mothron Egg.png
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
AI TypeMothron Egg AI
Max Life200
KB Resist30%
Immune toConfused
Baby MothronHardmode exclusive
Baby Mothron.gif
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
AI TypeBaby Mothron AI
Max Life700/1400/2100
KB Resist70%/73%/76%
Immune toConfused
Not to be confused with Moth.

Mothron is a powerful Hardmode, post-Plantera flying enemy that spawns during the Solar Eclipse event. Mothrons can pass through all blocks and attack by chasing after the player or aligning themselves horizontally with them before lunging towards them at varying speeds, inflicting heavy contact damage depending on their velocity. Occasionally, it lands on blocks to lay several Mothron Eggs that will spawn Baby Mothrons if they are not destroyed in time, much like Lepus(3DS version).

It is one of the few entities that can be detected by the Lifeform Analyzer or its upgrades. Mothron requires 25 kills to be awarded completion of its Bestiary entry and corresponding banner, as opposed to the usual 50 kills.


  • Be careful not to let Mothron lay its eggs on a single block in the air as sometimes it can despawn without dropping anything.


  • The basic steps:
  • If the player is lucky enough to have one from a previous Solar Eclipse or from the current one, the Death Sickle is very effective against Mothron, constantly hitting it and keeping it at bay for a precious few seconds.
  • Mothron is most vulnerable when it is laying its eggs.
  • When dashing, it is vulnerable to more damage as it rams into the player's projectiles rapidly. Weapons such as the Crystal Serpent especially benefit from this.
  • The best thing to do is to kill the eggs before they hatch, as the Baby Mothrons can be very annoying to kill. It is also useless to farm them, as they drop no loot.
  • Another strategy is jumping down a Hellavator and shooting up, however the effectiveness of this can vary greatly class-to-class and strategy-to-strategy.


  • Mothron is a reference to Mothra from the 1961 Japanese kaiju film Mothra.[1] The subtle change in its name follows the trend of Terraria enemies' and bosses' names ending with the suffix -ron, such as Skeletron, Duke Fishron, and Pigron.
  • If the Eclipse finishes, or all players die, Mothron floats up to the sky and despawns, similar to the Martian Saucer and Pumpkin/Frost Moon event bosses. In addition, it becomes invincible after the end of the Eclipse.
  • Similar to the Ice Golem, Sand Elemental, and the Dreadnautilus, Mothron is not a boss or mini-boss even though it has stats comparable to a boss. This is evidenced by its lack of a boss health bar, the fact that it drops a banner, not a trophy, and the fact that it does not drop a relic in Master Mode.
  • Technically, Baby Mothrons should be in their larval state at birth.
  • Mothron acts similarly to Lepus(3DS version), in the sense that it lays eggs that spawn weaker versions of itself.
  • Grox The Great presumes that Mothron drops the Broken Hero Sword because it ate the sword.[2]

BestiaryBestiary entries

  • Mothron: "A behemoth of an insect attracted to the eerie anti-glow of a solar eclipse. With a rapid gestation period, it multiplies quickly."
  • Baby Mothron: "The creatures which burst from the eggs laid by mothron can be as deadly and as relentless as their daunting mothers."


  • Desktop 1.4.1: Can now only spawn after Plantera has been defeated.