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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 (Orange)
Tooltip Summons Skeletron Prime
Summons Skeletron Prime
Dropped By All monsters if you are in hardmode and haven't defeated the Skeletron Prime yet.
Drop Rate 0.1%
Sell Value No Value
Material In Suspicious Looking Skull(Console Only)
Crafted With 5 Iron Bars/5 Lead Bars
3 Souls of Light
3 Souls of Night
30 Bones
Crafted At Mythril Anvil
Orichalcum Anvil
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 HERO(02:00)


  • 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 winch, like a jack-in-the-box or a music box.


  • Skeletron Prime is sometimes known to not appear after having summoned it; 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 affect. It is advisable to select a single skull with right-click and use it, rather than put it on a hotkey.
  • If you attempt 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.
  • It can't be dropped from meteor heads

Update Info


  • Added to the game.
Items Requiring Copper
Tools Copper Pickaxe · Copper Axe · Copper Hammer
Armor Copper Helmet · Copper Chainmail · Copper Greaves
Weapons Copper Shortsword · Copper Broadsword · Copper Bow
Accessories Depth Meter · Copper Watch
Other Copper Bar · Mechanical Eye · Mechanical Worm · Mechanical Skull
Items Requiring Iron
Tools Grappling Hook · Iron Axe · Iron Hammer · Iron Pickaxe
Armor Iron Helmet · Iron Chainmail · Iron Greaves
Furniture Bathtub · Chest · Cooking Pot · Lamp Post · Toilet · Barrel · Trash Can · Iron Door
Weapons Iron Bow · Iron Broadsword · Iron Shortsword · Flamethrower
Crafting Stations Iron Anvil · Sawmill
Other Iron Bar · Iron Chain · Empty Bucket · Inlet Pump Outlet Pump · Mechanical Eye · Mechanical Skull · Mechanical Worm
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