TerraCraft.tools

Hardmode boss

The Twins (Terraria 1.4.5)

The Twins is boss #12 of 33 in our Terraria 1.4.5 order (main boss 10 of 18). Summon: Use a Mechanical Eye at night. HP: 43,000 Classic / 64,500 Expert / 82,238 Master; base defense 10. Key drops: Soul of Sight, Hallowed Bar and Mechanical Wheel Piece. Beating it unlocks Souls of Sight and Hallowed Bars, and the Steampunker after any mechanical boss. Fight it after Queen Slime and before The Destroyer.

The Twins

The Twins stats

43,000HP Classic
64,500HP Expert
82,238HP Master
10Defense

Health counts both eyes together.

StatClassicExpertMaster
Health43,00064,50082,238

Base defense 10.

The Twins in the game

The Twins fight, in-game screenshot
The Twins in the game. Screenshot © Re-Logic, via the Terraria Wiki.

How to summon The Twins

Mechanical EyeMechanical Eye

Use a Mechanical Eye at night.

Why fight it at this point

Many players take the Twins first among the mechanical bosses because they are easiest to dodge in an open sky arena.

What The Twins drops

Soul of SightSoul of Sight
Hallowed BarHallowed Bar
Mechanical Wheel PieceMechanical Wheel Piece

Drop rates and mode-only items differ between Classic and Expert or Master (treasure bags). Full drop table on the Terraria Wiki.

Tip

Focus Retinazer (the laser eye) first; Spazmatism hits harder up close in its second form.

Back to the boss order checker · Mechanical boss order · Class setups for this stage

Questions players ask

How do I summon The Twins?

Use a Mechanical Eye at night.

How much HP does The Twins have in Master mode?

82,238 HP (both eyes together). Classic: 43,000, Expert: 64,500.

What does The Twins drop?

Soul of Sight, Hallowed Bar and Mechanical Wheel Piece. The wiki lists the exact chances.

What should I do after The Twins?

The next main boss is The Destroyer.

Data: Terraria 1.4.5 facts from the Terraria Wiki (terraria.wiki.gg, CC BY-NC-SA 4.0), checked 14 October 2026 against patch 1.4.5.8. Text and tools are our own. Wrong number? Tell us.

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