Martian Engineer

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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
Martian EngineerHardmode exclusive
Martian Engineer.png
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
AI TypeFighter AI
Max Life400/800/1200
KB Resist60%/64%/68%
BannerMartian Engineer BannerMartian Engineer Banner
Immune toShimmering

The Martian Engineer is a Hardmode, post-Golem enemy that appears during the Martian Madness event. It has the ability to build Tesla Turrets around it.


  • Tesla Turrets can only be spawned within a 5×5-tile rectangle around the Martian Engineer. They require a solid tile with an open space of 3×4 tiles above it.[1]
  • A Martian Engineer can only create a new Tesla Turret if there are no more than four Tesla Turrets per Martian Engineer currently alive.[1] For instance, if there are currently two Martian Engineers alive, then a maximum of eight Tesla Turrets can be spawned at a time. The limit is not tied to the respective Martian Engineers, i.e., one could spawn seven Tesla Turrets and the other only one.


  • Over the course of the event, a large number of Tesla Turrets can appear if Martian Engineers are not properly dealt with. This can lead to the player becoming overwhelmed by their attacks. To avoid getting overwhelmed, the player should focus on defeating Martian Engineers first before anything else.


  • The BestiaryBestiary entry for the Martian Engineer: "Martian soldiers who lack combat ability may instead be deployed for their mechanical aptitude, constructing turrets on the field."



  1. 1.0 1.1 Information taken from the Desktop version Desktop source code, method AI_003_Fighters() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is