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The Twins

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The Twins
The Twins.png
Type Boss
Knockback Resist 100%
Coins 10 Gold Coin
Item (Quantity) Rate
Soul of Sight.png Soul of Sight (20-40) 100%
Greater Healing Potion.png Greater Healing Potion (5-15) 100%
Hallowed Bar.png Hallowed Bar (15-30) 100%
Twin Mask.png Twin Mask 14.29%
Retinazer Trophy.png Retinazer Trophy 10%
Spazmatism Trophy.png Spazmatism Trophy 10%
For strategies on how to defeat The Twins, see Guide:The Twins Strategies.

"This is going to be a terrible night..."

The Twins are the Hardmode version of the Eye of Cthulhu. They can only be summoned at night with the Mechanical Eye and must be defeated before sunrise, otherwise they disappear. Similar to the Eye of Cthulhu, they have a chance of spawning when night falls once Hardmode is enabled, displaying the message "This is going to be a terrible night..." at dusk.

Both eyes have their own individual life meter and both must be killed in order for the Twins to be defeated. The eye with the red iris, Retinazer, fires purple eye lasers while hovering above and to one side of the player. The one with the green iris, Spazmatism, shoots balls made of Cursed Flames, while hovering parallel to the player. Both alternate between their signature attacks and a charging attack, much like Eye of Cthulhu. Note that Retinazer's charge dash is faster and covers a bit more distance than Spazmatism's charge dash.

Just like the Eye of Cthulhu, they both have a second phase, but as of 1.2.3 they no longer transform to their 2nd phase immediately at half health, rather Retinazer transforms at 8000HP and Spazmatism transforms at 9000HP. Retinazer becomes a mechanical eye with a laser turret in its pupil, while Spazmatism becomes a mechanical mouth. Notice that Spazmatism's second form looks like the Eye of Cthulhu in his second form. Retinazer will start firing lasers more quickly and for more damage, and gains the ability to shoot a quick barrage of lasers. It alternates between harrassing the player with periodic fire and slowing down for rapid-fire. The more damaged Retinazer is, the faster it will shoot lasers during its rapid-fire stage. Spazmatism will begin actively chasing the players and constantly spewing Cursed Flames from its mouth, in a manner similar to the Flamethrower; the flames can inflict the Cursed Inferno debuff upon players and deal high damage. It alternates its flamethrower attack with a much more aggressive charge/dash that has more speed and range.

Retinazer (First Form)
AI Type Retinazer AI
Damage 20 eye laser
45 melee
Max Life 20000
Defense 10
Spazmatism (First Form)
AI Type Spazmatism AI
Damage 25 cursed flame
50 melee
Max Life 23000
Defense 10
Retinazer (Second Form)
Retinazer (Second Form).png
AI Type Retinazer AI
Damage 25 death laser
20 death laser (rapid fire)
45 melee
Max Life 8000/20000
Defense 25
Spazmatism (Second Form)
Spazmatism (Second Form).png
AI Type Spazmatism AI
Damage 30 eye fire

50 melee
Max Life 9000/23000
Defense 35

[edit] Notes

  • The Twins will disappear if the player(s) are too far away.
  • Unlike the Eye of Cthulhu, the twins gain defense when they take on their second form. This defense boost occurs only after the transformation has completely finished however, so take advantage of its weaker and immobile state while you can.
  • In Crimson worlds, Spazmatism is the only natural source of cursed fire.
  • In his first form, Spazmatism's flame shots often miss, even if the player isn't moving, the same goes for Retanizer's laser bolts in his second form.
  • Both of the Twins are vulnerable to the Frostburn debuff.
  • The Cursed Flames fired by Spazmatism travel slower in honey.
  • While considered the mid-tier hardmode boss before the 1.2 update, the Twins are now widely considered the hardest mechanical boss.
  • If The Twins are summoned with a mechanical eye on a night where The Twins naturally spawn both pairs will appear and all four eyes will be connected.

[edit] Trivia

  • Retinazer's name is a portmanteau of retina, a part of the eye, and laser. Spazmatism's name is a portmanteau of astigmatism, an eye disorder, and spasm, meaning to twitch uncontrollably.
  • The rope connecting the twins is similar to the rope connecting The Hungry to the Wall of Flesh.
Bug : Occasionally, when summoned with the Mechanical Eye, both may not appear. This is confirmed to happen in Multiplayer and Singleplayer.
Bug : If the Twins are too far apart, the tendril connecting them may randomly disappear, only returning when the twins get closer to each other.
Bug : On the Mobile version, Retinazer and Spazmatism's sprites are broken, making them invisible and only distinguishable by their nametags and the tendon connecting them.
Bug : If you summon The Twins and teleport far enough, one of the eyes can disappear, leaving one eye to fight. A similar effect can be found in Skeletron Prime
Bug : Sometimes if the twins are not defeated before dawn after they run away they will get stuck around the area become invisible and both will fire lasers at you, only known fix is to reload your world.
Bug : Rarely, when the player dies one of the eyes will disappear mid-fight.
Bug : If you're using the Gravitation Potion you can make them despawn if you go too far away.
Bug : After you have defeated The Destroyer, the body of it can get attached to either one of the eyes.
Bug : Sometimes, both twins can drop Souls of Sight, resulting in the player getting twice the amount of Souls.
Bug : On rare occasions, one of the Twins will disappear instead of changing forms.
Bug : Sometimes, when "It's going to be a terrible night..." appears, The Twins may not spawn.
Bug : Sometimes, The Twins will not go in to second form, instead at lower health.
Bug : Sometimes, Retinazer will disappear after you die and spawn far away, then you only have to fight Spazmatism. After he is killed the Twins will be defeated and you will get all the loot, only reported on Xbox.
Bug : Sometimes when Retinazer is killed just before dawn and Spazmatism is not it will give both the message it has been defeated and fled but will only drop hallowed bars.

[edit] History

  • 1.2.3: Spazmatism increased health to 23000, decreased damage for both.
    • Spazmatism now transforms at 9000HP and Retinazer now transforms at 8000HP, instead of at half HP.
    • Now only drops 15-30 Hallowed Bars.
  • 1.2:
    • Now have a chance to spawn during hardmode with the message: "This is going to be a terrible night...".
    • Will now drop 20-40 Souls of Sight, instead of 20-30.
    • Health and damage reduced from 24000 and 50 to 20000 and 40 respectively.
  • 1.1: Introduced.

Pre-Hardmode Enemies • Hardmode Enemies • Event Enemies • Bosses • Critters • Friendly NPCs • Familiars
Pre-Hardmode King Slime • Eye of Cthulhu (Servant of Cthulhu) • Eater of Worlds • Pc only.png Brain of Cthulhu (Creeper) • Pc only.png Queen Bee • Skeletron (Dungeon Guardian) • Wall of Flesh (Leech) • Mobile-phone-icon.png Lepus (Diseaster Bunny)
Hardmode The Twins • The Destroyer (Probe) • Skeletron Prime • Pc only.png Plantera • Pc only.png Golem • Console only.png Ocram
Pumpkin Moon Pc only.png Mourning Wood • Pc only.png Pumpking
Frost Moon Pc only.png Everscream • Pc only.png Santa-NK1 • Pc only.png Ice Queen