Terraria Codex

Psycho

A masked phantom materializes from the shadows to strike without warning

The Psycho is a Hardmode , post- Plantera enemy that spawns during the Solar Eclipse event . He will initially spawn in a nearly invisible, stealthed state, waiting for the player to damage him or get closer than 10.625 tiles before he fully reveals himself, and starts attacking with a knife that deals heavy damage on contact. - Item (Quantity) Rate - Psycho Knife 2.5% 4.94% - Internal NPC ID : 466 - 1 Notes - 2 Trivia - 3 History - 4 References

Type
Enemy
Environment
Solar Eclipse
AI Type
Fighter AI
Damage
70 / 140 / 210 (contact) 122 245 367 (knife)
Max Life
550 / 1100 / 1650
Defense
40
KB Resist
50% / 55% / 60%
Banner
Psycho Banner

Lore & Background

["When the sun is eclipsed by an unnatural darkness, the veil between worlds thins, and the Psycho emerges from the ether. This silent stalker exists in a state of perpetual concealment, drifting through the Hardmode landscape as a ghostly silhouette visible only to those who dare draw near. The legends say he does not walk so much as haunt, his presence felt before his form is seen, waiting with a predator's patience for the moment an adventurer breaches his invisible threshold.", 'Once within striking distance, the illusion shatters. The figure solidifies into a grim, masked executioner wielding a blade that gleams with lethal intent. Unlike other foes of the Eclipse who charge blindly, this killer relies on cunning and ambush, exploiting the confusion of the dimmed sky to deliver devastating blows. His knife strikes carry a weight far beyond their size, capable of cleaving through armor as if it were paper, leaving survivors to wonder if they faced a monster or merely a reflection of their own mortality.', "Survivors whisper that he is drawn not by bloodlust alone, but by the chaos of the celestial event itself. He remains indifferent to the architecture of civilization, ignoring open doors and closed gates alike, for his path is one of direct violence. To encounter him is to face a slasher from ancient nightmares made flesh, a reminder that even in Terraria's vibrant world, some terrors cannot be outmaneuvered by speed, only survived by preparation."]

In Their Own Story

['The sky turned a bruised purple as the moon swallowed the sun. You tightened your grip on your weapon, eyes scanning the horizon for the usual horde of zombies and vampires, but the air felt still, heavy with a silence that screamed danger. Then you saw it: a faint, translucent outline hovering just beyond ten tiles, barely disturbing the dust motes in the dim light. Your heart hammered against your ribs as you realized the figure was waiting.', "You took a single step forward, crossing the invisible line of his patience. The world seemed to snap into focus as the phantom solidified instantly into a grim silhouette clad in tattered clothes and a terrifying mask. In one fluid motion, he lunged, the knife flashing with a light that hurt to look at. The impact was catastrophic, a shockwave of pain that nearly buckled your knees, the blade's edge biting deep before you could even raise a shield.", 'He did not roar or scream; he simply stood there, breathing heavily as if the hunt was a mundane chore. You scrambled backward, adrenaline burning through your veins, realizing too late that his stealth had been his greatest weapon. As you turned to flee, you saw him again in the periphery, already fading back into the shadows, waiting for the next moment of weakness to strike once more.']

Reader's Guide

['The Psycho appears exclusively during Solar Eclipse events in Hardmode, but only after Plantera has been defeated. He spawns as a nearly invisible entity that remains undetectable until you approach within 10.625 tiles or deal damage, at which point he fully materializes and begins his assault.', 'His primary threat is the knife he wields, which deals significantly higher contact damage than his body itself. While his base contact damage is high, the blade inflicts a massive 75% increase on top of that, capable of bypassing defenses if you are caught off guard. He moves at 19 mph and possesses moderate knockback resistance, making him difficult to push back once engaged.', 'To farm him effectively, ensure you have high evasion or damage mitigation gear, as his ambush mechanic punishes careless movement. Use ranged weapons or summons that can target him from beyond his stealth radius if possible, though most players must bait the reveal by approaching carefully. Defeating him yields a small chance for the Psycho Knife, a melee weapon that reflects his own deadly style, alongside standard Solar Eclipse currency and coins.']

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