The Twins

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True Eye of Cthulhu

 Classic

 Expert

 Master

Statistics

Type	Enemy
Environment	Lunar Events
AI Type	True Eye of Cthulhu AI
Damage	60 / 108 (melee) Phantasmal Sphere: 110 / 220 Phantasmal Deathray: 100 / 200 Phantasmal Eye: 70 / 140 Phantasmal Bolt: 70 / 140

• Internal NPC ID: 400

Not to be confused with the Eye of Cthulhu boss. Also not to be confused with the yoyo, The Eye of Cthulhu.

True Eyes of Cthulhu are invincible enemies that are summoned by the Moon Lord when you kill the eyes on its head or on one of its hands. Since the Moon Lord has 3 eyes for you to "kill" before his core is revealed, there will always be 3 True Eyes of Cthulhu pursuing the player until the very end of the battle.

Quick Answers

What are the names of the two entities that make up The Twins in Terraria?

The Twins in Terraria are made up of two individual entities known as Retinazer and Spazmatism.

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How can The Twins be summoned in Terraria?

In Terraria, The Twins can be summoned using a Mechanical Eye. However, they can also spawn naturally once a Demon or Crimson Altar has been destroyed, as long as they haven't been defeated at least once in the current world. If they spawn this way, their arrival is announced by the status message 'This is going to be a terrible night...'. Remember, The Twins must be defeated before dawn, otherwise they will flee and despawn.

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What does 'This is going to be a terrible night' signify for The Twins in Terraria?

In Terraria, the phrase 'This is going to be a terrible night' signals the arrival of The Twins, a Hardmode mechanical boss. This status message appears when The Twins are about to spawn, adding a sense of dread and anticipation to the game. The Twins are a more difficult version of the Eye of Cthulhu and must be defeated before dawn, otherwise, they will flee and despawn. So, when you see 'This is going to be a terrible night', prepare for a challenging battle!

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What are the attack patterns of Retinazer and Spazmatism in Terraria?

In Terraria, The Twins, Retinazer and Spazmatism, have unique attack patterns. Retinazer, the eyeball with the red iris, fires high-velocity Eye Lasers and usually tries to stay diagonally above the player. Spazmatism, the eyeball with the green iris, fires medium velocity balls of Cursed Flame and typically tries to stay horizontally in line with the player. Both alternate between their signature ranged attacks and charging melee attacks. When their health dips to 40%, each eye transforms. Retinazer becomes a mechanical eye with a laser cannon, firing red Death Laser projectiles and ceasing its attempts to ram the player. It fires more rapidly and with higher damage, and periodically fires in quick barrages. Spazmatism transforms into a mechanical mouth that chases the player, charging with greater speed and range, and periodically spews solid streams of cursed flames.

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What is the connection between The Twins and the Eye of Cthulhu in Terraria?

In Terraria, The Twins are essentially a more challenging, cybernetic version of the Eye of Cthulhu. They are two separate entities, Retinazer and Spazmatism, connected by a tendril. Each has its own attack pattern and life count, and both must be defeated to conquer the boss. The Twins can be summoned manually using a Mechanical Eye at night, similar to how the Eye of Cthulhu is summoned. They also have a chance to spawn naturally at dusk once a Demon or Crimson Altar has been destroyed, as long as they have not yet been defeated at least once in the game.

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Attack

• The True Eye of Cthulhu will appear after the head or either hand of the Moon Lord has been slain. They will orbit the Moon Lord and pursue the player, generating white balls of energy which they then fling at the player frequently. They also have a miniature beam similar to the Moon Lord's deathray that generates from his head, though the beam generated by the True Eye of Cthulhu is far easier to avoid. They come in to hit you and do up to 50-100 damage.

Tips

• To prevent overwhelming yourself with the attacks the True Eyes of Cthulhu damage you with, try and "release" all 3 eyes all at the same time. That way, by the time the Moon Lord reveals its core, you won't be as damaged as much as you would if you "released" the eyes one by one.
• Using good dodging gear, such as the Master Ninja Gear, can help you avoid its attacks.

Notes

• Because it is impossible to kill, the only way the True Eyes of Cthulhu will disappear is after either the player or Moon Lord is killed.

Trivia

• The True Eye of Cthulhu, along with the Spike Ball and the Blazing Wheel, are the only truly invincible enemies. This makes the True Eye of Cthulhu the only invincible enemy not meant to act as an environmental hazard in the Dungeon.
• The True Eye of Cthulhu may be a reference to a Youtuber by the name of Jacksepticeye as his avatar is a floating eye with tentacles.

History

• 1.3.0.1: Introduced.

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