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Prerequisites Being descended from someone with the ability
World Detritus, Superiority, others
Universe Skyward Universe
Featured In Skyward, Defending Elysium[1]
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Technology is limited. Only the mind is infinite.

Varvax proverb[2]

Cytonics, sometimes called cytonic abilities, a defect or a deviation, are a set of psionic abilities used by numerous sapient beings, among them Jason Write and Spensa Nightshade.[2][3]. A person capable of using them is called a cytonic. In humans, those abilities have lasted centuries and have continued to pass genetically since the time of the Phone Company until the occupation of Detritus by the descendants of the Defiant.[4] All known alien species have the capacity to produce cytonics, and a few are all-cytonic.[2]


The first cytonics were likely delvers, ancient entities existing in the nowhere; however, they would not come into contact with physical world until much later.[5] In normal space, all sapient races, as well as a few non-sapient ones, would eventually develop cytonics; of them, all other than humans did so prior to discovering advanced technology.[2][6] The earliest known cytonics were the kitsen shadow-walkers, who used teleportation to travel between their homeworld and Earth, where they would interact with ancient humans.[7] However, due to some unknown disagreement, the shadow-walkers eventually departed both worlds, never to be seen again.[8]

Much later, during humanity's forays into the solar system, the Phone Company attempted to develop cybernetic-based telepathic linking, nicknamed cyto. While those original attempts did not work as intended, they were sufficient to attract the attention of the alien tenasi. More advanced cytonics are studied and developed by the few in the Phone Company over the years.[2]

During the Second Human War, mankind attempted to augment their military by summoning the delvers.[9] This went horribly wrong; not only did the delvers turn against their would-be controllers, but they rampaged across space unchecked before eventually fading away.[10][11] From then on out, however, they were a constant presence for all cytonics. Fearful of them, Superiority made a transition away from using cytonic abilities, with the singular exception of FTL technology, necessary for interstellar travel.[10] Humans likewise came to fear the "defect" for the threat it carried with them, leading to nearly all knowledge of the abilities disappearing on worlds like Detritus.[12]


Cytonics encompass a number of abilities powered by the living mind. Some of them can be augmented by electronics, and through this shared to populations that don't possess them.[2] In humans, use of cytonics is signified by increased activity in the section of the brain called the Writellum.[13] Only a small percentage of the total human populace possesses the capacity for cytonics, although this number is far higher among alien races. Some, like varvax and tenasi, are implied to all have the ability.[2]

In order to utilize cytonics, the user needs to meditate, focusing on the impression of moving upwards and letting the world around them fade away.[14] While an beginner needs several moments to enter the appropriate mental state, an experienced user of cytonics can do so instantly, allowing them to actively use the ability in combat.[2] The focus allows the cytonics to utilize the nowhere, a timeless emptiness outside of normal reality. Nowhere figures heavily in several, if not all cytonic abilities, most notably teleportation and FTL communication.[15] It's also home of the delvers, making using it highly dangerous.[3]

Cytonic Abilities[edit]


He had been legally blind since he'd turned sixteen. (...) Fortunately, he had other methods of seeing.

The ability to "see" the world with supernatural senses. Jason Write uses it to perceive the light as vibrations, black being calm, white light being a roar in his mind. This allows him to get a clear picture of the world despite his blindness, though it takes a certain level of conscious effort.[2]

Perhaps related to this is the ability some cytonics have to detect each other. When near a fellow cytonics, they feel a sense of electicity coursing through them, or the feeling of being splashed with cold water.[16] When they focus, they seem able to detect cytonic beings from a considerable distance.[17] Others, however, can only detect a cytonic by deliberately probing the mind of a suspected person.[18]

FTL Communication[edit]

They used that place between heartbeats to talk to one another, to communicate instantly.

Spensa about the Krell[15]

The original reason cytonics was developed was its ability to connect minds of cytonics users and share verbal information. During the days of the Phone Company, the advanced FTL communication network that connects all mankind is powered by a single operative with developed cytonic abilities, and is mediated by cybernetic equipment.[2]

Cytonics can communicate without help of the electronic equipment.[15] The range that they can communicate without technological support is unknown; two cytonics can communicate across star systems, although the communication will be spotty at best.[19] Cytonic communication can be easily overheard by other cytonics at a distance of at least several hundred kilometers. Difference in language or species makes no distinction in FTL communication; however, it seems impossible to encrypt or secure it against eavesdroppers. It is proven that certain technology or matter can block or interfere with it.[15]

Mind Speed Acceleration[edit]

The Krell knew they had to target any of us who flew too well—because they knew about the defect.

Cytonic users are able to react at incredible speed, thinking faster than humanly possible, although this doesn't not allow for increase in physical speed. This mind acceleration allows cytonics to excel in tasks that require quick reaction times, such as flight, making them excellent pilots, as well as use their abilities with little advanced warning, letting them react even to flying bullets.[20][2]


He whipped out a dozen invisible mindblades that slashed through the air. The force of his attack slapped the bullets backward as well as sliced each one in two.

Mindblades are pure force, formed by the mind of the user. They can be used to cut through any solid objects, but with practice, they can be Sensed and blocked by other mindblades. They are capable of affecting even materials that are resistant to advanced conventional weaponry, such as Telanium.[2] They are considered one of the more advanced cytonic abilities, and difficult to figure out on one's own.[18]

FTL Travel[edit]

I did something with my mind. We vanished, leaving a ship-size hole in the expanding blossom of flame and destruction.

An ability possessed by all advanced alien races, and developed but kept secret by the Phone Company operatives. It involves Sensing inwards on oneself and removing oneself from normal space, moving through nowhere to reappear at a different point in normal space, possibly light-years away, in seconds. When reappearing, the performer pushes aside matters at their destination to create the space for themselves.[2] There seems to be no upper limit on the distance travelled; however, the cytonic requires keen awareness of the place they are returning to. This can be achieved with cytonic coordinates, which can be pushed directly into a person's mind and allow even an untrained cytonic to travel. Such coordinates, however, fade within a few minutes.[22]

FTL travel is an ability that can be augmented by technology to allow the cytonic to transport more than just themselves. As such, it forms the basis for all interstellar travel. Modern design, used to avoid attracting the delvers, utilizes taynix as hyperdrives, as delvers find them uninteresting.[6]

Mind Swap[edit]

Your dissidents are escaping, and they're hiding among us.

Using advanced cytonics, it is possible for a mind to swap bodies, including cross-species. Among others, varvax dissidents can utilize this to take human bodies, akin to possession.[2] It would, however, take much time to adjust if the bodies are too different.

Cytonic Suppression[edit]

No! It can't be! Where is my Sense!

There exist devices that allows suppression of cytonic abilities, for the purposes of keeping prisoners or protecting an area from cytonic influence. Varvax use cytonic suppression to keep various civillizations in check, while the Detritus debris shield mutes access to cytonics to an extent.[2][3]

Trans-cytonic processing[edit]

To create computers that can think as quickly as my mind, you need processors that can communicate faster than normal electric signals facilitate.

Some advanced processors use cytonic technology to work much faster than normally possible.[24] This is most important to artificial intelligence's such as M-Bot.[15] Using minature cytonic communicators, parts of AIs can pass signals between each other at speeds faster than light, which facilitates near-human intelligence and superhuman analytics ability. As a side effect, it makes those machines detectable by organic cytonics.[23] However, for some reason AIs anger delvers much more than other forms of cytonics and radio signals, leading to a ban on them in the present times.[10]

Mind Hologram[edit]

It should be incapacitated now, and if it's looking at you, it doesn’t see you. We are overwriting its vision.

Krell command[15]

People with cytonic abilities are susceptible to having their vision overwritten by some process, technology or ability, replacing their normal sight with artificial images conjured up by the hologram creators. This is what causes Chaser to turn on his allies during the Battle of Alta.[15][25]

Notable cytonics users[edit]


All species have the potential to produce cytonics; the following lists species of which every member is a cytonic.



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