Neuron Fly

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Slugcat no right.pngSpoiler icon 5p.png SPOILER WARNING: 5P
This section contains major plot details from the "5P" region and beyond. If you have not progressed past this region, then read no further!
"Neuron Fly"
Neuron Fly icon.png
Neuronfly infobox img.png
Code name
In Looks to the Moon: Edible
In Five Pebbles: Edible, Swallowable
Food Pips

1 Food pip.png Monk head.pngSurvivor head.png

0.25 Food pip quarter.png Hunter head.png

DLC icon.png1 Food pip.png Gourmand head.pngRivulet head.pngSaint head.png

DLC icon.png0.5 Food Pip Half.png Spearmaster head.png

DLC icon.png0.25 Food pip quarter.png Artificer head.png

Locations (amount)
Five Pebbles
The Rot
Looks to the Moon
Respawn time
None (respawning not determined by time)


Neuron Flies look like two thin tails connected to an oblong floating body with a white eye (or face) and shift colors randomly through red, white, blue, or purple, except for the unique green Neuron Fly Hunter head.png Hunter starts with. They are prevalent in Five Pebbles Safari Icon.png Five Pebbles and DLC icon.pngLooks to the Moon Safari Icon.png Looks to the Moon​ and a small number can be found in Shoreline Safari Icon.png Shoreline floating over Looks to the Moon (character) icon.png Looks to the Moon's puppet.

Function[edit | edit source]

Utility[edit | edit source]

Neuron Flies provide 1 food pip Food pip.png (1/4 of a pip Food pip quarter.png as Hunter head.png Hunter and DLC icon.pngArtificer head.png Artificer) when consumed, and grant Slugcat head.png Slugcat the ability to generate their own light for the rest of the campaign when consumed for the first time on a save file. They can also be stored in Slugcat's stomach when all of their food pips are filled.

While the Neuron Flies in Looks to the Moon do not respawn, the ones in Five Pebbles​ do as soon as the room is unloaded by going far enough away.

After eating a Neuron Fly, Void Spawn appear near Slugcat in certain locations. They are trapped in little 'eggs', and upon touch, they break free and slowly travel in a direction that leads from Looks to the Moon to Memory Crypts, guiding the Slugcat in the direction of Five Pebbles instead of the Overseer icon.png Yellow Overseer.

Looks to the Moon's Neuron Flies[edit | edit source]

When Looks to the Moon (character) icon.png Looks to the Moon is found, five Neuron Flies are flying above her. Catching these Neuron Flies causes Looks to the Moon to shake her head frantically and try to talk to Slugcat. With the Mark of Communication, she urges Slugcat to let them go. Eating them makes her throw herself to the ground and jerk around. Eating at least one earns the Stolen Enlightenment Achievement. Eating all of them kills Looks to the Moon. If Slugcat hibernates without eating or taking one of her Neuron Flies the cycle they find her, the A New Friend achievement is earned.

From then on, as long as the player hasn't eaten any Neuron Flies, the yellow Overseer guides Slugcat to more Neuron Flies for Looks to the Moon. Following the Overseer takes Slugcat to Five Pebbles, in hopes that Slugcat delivers some to Looks to the Moon (character) icon.png Looks to the Moon. If Slugcat has already eaten a Neuron Fly from Looks to the Moon, they can still find their way to Five Pebbles by following the aforementioned Void Spawn.

Looks to the Moon has the ability to read RWPearl.png Pearls found in the world with any number of Neuron Flies above 0.

Slugcat no right.pngHunter lean right.png SPOILER WARNING: Hunter
This section contains major plot details from Hunter. If you have not made significant progress or completed the game as Hunter, then read no further!

The Hunter's Neuron Fly, taking on various holographic shapes

The Hunter's Neuron Fly[edit | edit source]

GreenNeuron 1.gif

Hunter head.png Hunter starts the game carrying a unique green Neuron Fly. This Neuron Fly can be stored in Slugcat's stomach to leave both hands free. If it lies on the ground for a few seconds, it starts hovering above the ground at the level of Slugcat's head and occasionally emits a complex hologram from its form.

When the green Neuron Fly is brought to Looks to the Moon, who is initially exhaustively incapacitated when Slugcat meets her, the green Neuron Fly reactivates her own Neuron Flies and brings her back to life. This is because the Neuron Fly holds 'slag keys'. Looks to the Moon (character) icon.png Looks to the Moon became incapacitated because Five Pebbles (character) icon.png Five Pebbles accidentally deprived her of water, causing slag buildup which caused her processes to seize. The slag keys likely reactivated her water systems to flush out the slag and allowed her to become active again.

Spoilers end here.Slugcat thumbsup left.png

Trivia[edit | edit source]

  • Neuron Flies cease movement and lose the ability to fly while outside of Five Pebbles or Looks to the Moon. This fact makes carrying Neuron Flies between the two Iterators much easier.
  • The only practical reason to deliver Neuron Flies to Looks to the Moon as Survivor head.png Survivor or Monk head.png Monk is to receive bits of lore when she formats them, or to replace the Neuron Flies Slugcat ate.
  • Looks to the Moon still accepts partially eaten Neuron Flies.
  • Neuron Flies do not have a Sandbox item, similar to Noodlefly Egg icon.png Noodlefly Eggs.