
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 stats
Health counts both eyes together.
| Stat | Classic | Expert | Master |
|---|---|---|---|
| Health | 43,000 | 64,500 | 82,238 |
Base defense 10.
The Twins in the game

How to summon The Twins
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
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.
