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Mechanical Skull

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v557Mechanical Skull
Item 557
Type Item
Sub-Type Summoner
Max Stack 20
Consumable Yes
Quality Tier 3
Tooltip Summons Skeletron Prime
Summons Skeletron Prime
Dropped By All mobs in hardmode world (excluding statue-spawned mobs and Meteor Heads), so long as Skeletron Prime hasn't been defeated on that world.
Drop Rate 0.1% (1:1000)
Sell Value No Value
Crafted With 5 Iron Bars/5 Lead Bars
3 Souls of Light
3 Souls of Night
30 Bones
Crafted At Mythril Anvil
Orichalcum Anvil
Material In Suspicious Looking Skull (Console Only)

The Mechanical Skull is a consumable item that summons Skeletron Prime. It will summon Skeletron Prime anywhere in both pre-hard mode and hard mode worlds, but must be used at night time or it will not work.

Terraria - Mechanical Skull Terraria HERO02:00

Terraria - Mechanical Skull Terraria HERO


  • The Mechanical Skull's texture is based on a Skeleton's head.
  • The Mechanical Skull's sprite looks very similar to the Skull Lantern, just without the candle.
  • The Mechanical Skull seems to have a wind-up key, like a jack-in-the-box or a music box.


  • Skeletron Prime is sometimes known to not appear after being summoned; this bug seems to be much more common in multiplayer than single player.
  • Using the Mechanical Skull while Skeletron Prime has already spawned will consume the skull with no effect. It is advisable to select a single skull with right-click and use it, rather than put it on a hotkey.
  • If the player attempts to use the Mechanical Skull (or the other mechanical summoning items) at dusk, the item will not be used (which is supposed to happen) but when that night begins the respective boss will spawn naturally. This is a way to summon the hard mode bosses without using the item.
  • The Mechanical Skull's sprite looks similar to the alpha version of the Skeleton mob.

Update Info


  • Sprite change.


  • Added to the game.
Items Requiring Iron
Tools Chain · Iron Axe · Iron Hammer · Iron Pickaxe
Weapons Flamethrower · Iron Bow · Iron Broadsword · Iron Shortsword
Armor Iron Helmet · Iron Chainmail · Iron Greaves
Potions Ironskin Potion
Crafting Stations Cooking Pot · Glass Kiln · Heavy Work Bench · Iron Anvil · Sawmill
Furniture Barrel · Bathtub · Blacksmith Rack · Blue Dungeon Chest · Bone Chest · Bone Clock · Boreal Wood Chest · Boreal Wood Clock · Cactus Chest · Cactus Clock · Carpentry Rack · Chest · Dynasty Bathtub · Dynasty Chest · Dynasty Clock · Ebonwood Chest · Ebonwood Clock · Flesh Chest · Flesh Clock · Frozen Clock · Glass Chest · Glass Clock · Grandfather Clock · Green Dungeon Chest · Helmet Rack · Honey Chest · Honey Clock · Iron Door · Iron Fence · Lamp Post · Living Wood Clock · Lihzahrd Clock · Mushroom Chest · Mushroom Clock · Obsidian Chest · Palm Wood Chest · Palm Wood Clock · Pearlwood Chest · Pearlwood Clock · Pink Dungeon Chest · Pumpkin Chest · Pumpkin Clock · Rich Mahogany Chest · Rich Mahogany Clock · Shadewood Chest · Shadewood Clock · Slime Chest · Slime Clock · Spear Rack · Spooky Chest · Spooky Clock · Steampunk Chest · Steampunk Clock · Sunplate Clock · Sword Rack · Toilet · Trash Can
Other Empty Bucket · Inlet Pump · Iron Bar · Mechanical Eye · Mechanical Skull · Mechanical Worm · Minecart Track · Outlet Pump

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