Sky Grey (Earth-616)

Early life and incarceration
Sky Grey is the twin daughter of Scott Summers and Jean Grey, her biological twin being Rey Grey, with whom she grew up with for most of her childhood. The two of them were both identical and completely inseperable, to such an extent that Sky could sometimes even finish her sister's own sentences (This was the neonate stage of her telepathic powers coming into existence). It was heavily observed by others that the two of them were two precise halves of the same individual, but the twins were all too aware of their own similarities and ensured that they appeared different by Rey colouring her hair black instead of her natural red, so that she was interchangeable from her twin.

However, when she was twelve years old, Sky came to the realisation that she was homosexual - she had a powerful crush on her classmate Regina Carlson, who was her best friend alongside Rey. However, when Sky approached Regina with her romantic feelings for her, Regina screamed at her and called her a freak, right in front of everyone in the class. Rey saw it all happened and openly insulted her sister, demanding that she stay away from her from then on. Traumatised and horrified, Sky fell into a violent depression and screamed, accidentally unlocking her powers and unleashing a telekinetic shockwave that ripped apart the building and brought the whole establishment collapsing on top of them - Sky survived because her powers protected her with an energy shield. She was the only survivor.

Sky was admitted to a mental asylum, found standing catatonic in the ruins with tears running uncontrollably down her face. In her time at the asylum, Sky was left traumatised at being rejected by her love interest and her own twin for her homosexuality, but also for being precisely responsible for the deaths of so many people because she couldn't control her powers. Sky was plagued by intense nightmares that rocked her telekinetic abilities into ransacking the asylum, catching the attention of Colonel William Stryker who had her secretly admitted to one of his experimental laboratories, where he experimented painfully on her to test the capacities of her powers, which became hugely agonizing for Sky herself.

Eventually, after six months, her mental powers were experimented to such an extent that she subconsciously triggered a telepathic cloak that turned her invisible. When the guards entered her cell, under the suspicion that she had somehow escaped, she attacked them, escaping the cell and racing desperately through the complex, telepathically stunning the guards she came across before telekinetically knocking them out with their own weapons. She telepathically located Stryker trying to make his escape in a helicopter. She pursued him, cornering him in the hangar bay of the base. Sky telekinetically crushed the helicopter and the pilot inside it, then incapacitated Stryker's bodyguards, before levitating Stryker and slamming him against the walls repeatedly in a terrified rage. She came dangerously close to killing him, before Charles Xavier and the X-Men arrived and Charles rendered Sky asleep with a psychic persuasion, sparing Stryker and rescuing Sky, taking her from the base in an X-Jet.

X-Men
Sky lived the next three years of her life at Xavier's School for Gifted Youngsters, completely oblivious to the fact that Jean Grey was her mother and Scott Summers her father. She was introduced to the campus environment by Professor Xavier himself, since he was the more proficient teacher and a supremely powerful telepath himself. Sky was stunned to find a kindred spirit at the school, and so many others in the students there. She was taught, to her alarm, that her powers were more of a gift than a burden or a personification of bad luck, and that it gave her talents and responsibilities that very few could hope to eclipse. After a series of debates with the Professor, Sky was tutored personally by Jean Grey in terms of psychology, so that she could learn to handle her emotions more carefully and safely, and they became surprisingly close.

Soon, she became something of a model student, easily absorbing and memorising information and interpreting scientific, technological and historical information perfectly so that people could understand it, which shocked other students who believed she had intelligence a notch above them - in fact, she was unknowingly reading their minds and determining ways in which people could understand what she was talking about. However, she maintained her intense feeling of being a complete and irrevocable outsider, since she hadn't told anyone of her homosexuality, and that nobody could understand what she herself was thinking (Which was ironic, since she could know what they were thinking).

She eventually advanced to a level where Jean trained her in her use of telekinesis and telepathy, putting her in a gymnasium where Colossus would throw a series of dodgeballs at her and she would have to read his mind in order to anticipate when he would throw them and avoid it. She excelled at this, so she was advanced to a level where she had to telekinetically throw stones at a number of targets that would only appear for a split second. She excelled at this too. She asked to train with the other students, but Jean refused because the Professor could still sense that she was dangerous to herself. The most prominent fear was that she was another conduit of the Phoenix Force.

Sky was soon admitted into the X-Men when she was seventeen years old, and she had finally sharpened her powers to extreme levels in comparison to normal students of her age and situation. Trained in combat and to use her powers in combat situations, she was paired with Iceman, Rogue, Quicksilver and Shadowcat, and their first mission was to investigate a HYDRA base in the Alps, where a number of metahumans and powerful mutants were being experimented on in similar ways to how Sky herself was experimented by Stryker. They flew the X-Jet over the mountains and they skydived down, Sky telekinetically altering her path of descent to be more precise. They landed in the base and Sky rendered them invisible to the guards so that they could sneak in.

They made it to the centre of the base, before they crossed paths with the mutant Magneto and his Brotherhood of Mutants, who were secretly in league with HYDRA, intent on using their laboratories to breed new and powerful mutants to fight humans. Sky could somehow sense, even though Magneto was wearing his helmet, that the man was extremely powerful, eclipsing her in knowing how to utilise his powers and perfectly willing to kill her and her teammates. A battle erupted between the X-Men and the Brotherhood, in which the Brotherhood gained the upper hand on the younger mutants, though the X-Men eventually managed to eclipse their opponents. Surprised by the power of his younger enemy, Magneto summoned a masked mutant in voluminous blue robes, who Sky suddenly found impossible to telepathically penetrate. The mutant, dubbed Gravity, overpowered the X-Men easily with telekinesis and amazing physical combat skills, outpacing even Quicksilver.

With only Sky left, the two of them sparred frenziedly, telekinetically hurling blows at one another with kinetic energy and surrounding objects, until suddenly Gravity managed to penetrate Sky's mind and taunt her for being inferior to her. Sky found she somehow recognized the voice, and demanded to know who Gravity was, but before the mutant could answer the Hulk smashed into the base and separated the combating mutants, followed by the Avengers. Thor and Magneto battled, throwing Gravity and Sky apart and they took a moment to stare at one another, their eyes locking, and suddenly the battle blocked Sky from seeing her opponent. The Brotherhood retreated and the Avengers faced against the X-Men, who backed down and together the two teams planted explosives in the base, evacuating every captive and worker there beforehand, before boarding the X-Jet and following the Quinjet towards the Helicarrier over New York.

Powers
Sky is a Beta-Level Mutant at first calculation, but is hinted to be a spectacularly more powerful person. She is an extremely powerful telepath and an equally powerful telekinetic, though her powers are drastically unstable when she is unable to control them, making her terrifically dangerous:
 * Telepathy: Sky has the ability to read thoughts, project and broadcast her own thoughts, as well as affect the minds of humans and animals with higher order intelligence. She has supremely sharpened her telepathic powers over the years, making her almost as powerful a telepath as Charles Xavier, though not to the same standard on account of her being younger and newer to her powers:
 * Telepathic Defense: She can manifest her telepathy in a number of defensive ways.
 * Telepathic manifestation: She is able to create environments inside her mind and the minds of others, creating realistic environments where she can combat, communicate and confront a person or persons. In this state, she is provided with superhuman strength, speed and reflexes, as well as gravitational control over this psychokinetic world.
 * Telepathic obstruction: She is able to telepathically convince an opponent not to attack her, or to delay attacking her, providing her with the upper hand in a fight.
 * Telepathic premeditation: She can use her telepathic powers to predict her opponent's movements and react defensively/offensively seconds in advance of her opponent, causing the misconception that she has superhuman speed.
 * Telepathic Cloak: She can mask her presence and the use of her abilities from being detected by other psions and psychic entities. She can extend these defenses to others around her as well. Cloaking via telepathy is not perfect and powerful psis may notice and 'see' through this ability.
 * Cloak Mind: Ability to rearrange the “mental engrams” of mutants so their distinctive mutant thought patterns cannot be detected by Cerebro-type devises or by other telepaths.
 * Psychic Shield: She can erect a psychic shield for protection of herself and the minds of others.
 * Telepathic Illusions: She can create realistic telepathic illusions and cause people to experience events which are not actually occurring.
 * Telepathic Camouflage: She can alter the apparent physical appearance of herself and other people by altering the perceptions of those around her. This can go so far as to make other people believe that the camouflaged people are not there (invisible). A limit, if one exists, is only imposed by the number of people she is trying to fool, not the number of people she is camouflaging.
 * Telepathic Manipulation: She can manipulate other people's minds easily, achieving a variety of effects.
 * Memory Alteration:She can erase, implant, restore or alter the memory of others.
 * Mind Control: She can control the thoughts and actions of others.
 * Mind Possession: She can possess the mind of another, and use that being's body as her own.[113]
 * Personality Alteration: She can alter the minds of others by force of will, thus permanently changing their personality partially or entirely.
 * Mental Paralysis: She can induce temporary mental or physical paralysis.
 * Mental Amnesia: She can erase any awareness of particular memories or cause total amnesia.
 * Mind Transferral: She can transfer both her mind and powers into other host bodies if her own physical body was somehow killed.
 * Heal Trauma: She has the ability to erase a person’s memories and to heal mental trauma through “psychic surgery,” as well as the power to stimulate or deaden the pain and pleasure centers in a person's brain.
 * Mental Sedating: Can telepathically "sedate" her victims so that, if already rendered unconscious, they remain so for as long as she continues to "sedate" them.
 * Neural Jumpstart: She can increase the speed of neural signals in the brain, which could increase another mutant's powers to incredible levels, but the effect was only temporary.
 * Dilate Power: She has the ability to place “psychic inhibitors” in the minds of mutant adversaries to prevent them from using their powers.
 * Mind Link: Ability to develop a mental link with any person, which remains as a connection to that individual.
 * Psychic Blast: She can project psychic force bolts which have no physical effects but which can affect a victim's mind, causing them pain, knocking them unconsciousness or turning the victim "brain-dead".
 * Astral Projection: She can project her astral form from her body onto the Astral Plane or the physical plane. In the physical plane she can travel in astral form over vast distances. In the astral plane, she can mentally create psionic objects and manipulate the aspects of her environment. She can communicate with others astrally through her own will, or through contact with the thoughts and memories of others.
 * Mental Detection: She can sense the presence of another superhuman mutant within a small but as yet undefined radius of herself by perceiving the distinctive mental radiations emitted by such a being.
 * Telekinesis: Projection of psychokinetic energy enables her to levitate objects, propel or manipulate them however she wishes, lift herself and move through the air to simulate flight, stimulate individual molecules to create heat, generate concussive force as blasts or bursts, and create powerful protective shields.
 * Biophysical Control: She has the ability to control living organic tissue, causing muscles to cramp, skin to break, or blood vessels to burst or contract. This is one of her lesser-used adaptions of telekinesis.
 * Telekinetic manipulation: She can generally manipulate physical objects and matter, including repelling individuals, levitating objects, opening locks and doors, even telekinetically playing a piano and causing a violin to independently play an elaborate tune. She can often unconsciously do this, especially when experiencing powerful emotions, causing objects to either rupture, or be thrown telekinetically from her in any direction.
 * Concussive Blasts: She can project psychokinetic energies as powerful blasts directed from the brain (Expelled from either her hands, or her entire body) that could apparently affect matter with concussive force. She can shatter windows, repel enemies and cause powerful tremors with this ability
 * Ensnare Opponent: She can constrict a foe, preventing them from generally moving, effectively paralysing them. Through this, she can levitate them through the air and use them as projectiles, shields and meelee weapons
 * Flight: She is able to fly through the air via telekinesis, and even maintain the objects he or she has telekinetic control over simultaneously while in midair. Her speed exceeds that of Angel, and eclipses that of a military jet, but requires extreme concentration to be performed successfully and without incident.
 * Force Fields: She has can create protective force shields that could deflect even the most powerful of attacks, either creating individual shields for one individual area, or a circular force-field around a large space. These enable her to block bullets, blades, missiles, explosions and energy, but are narrowly unable to combat with beings like Juggernaut
 * Healing: She is shown to be able to heal herself and others of injuries to certain extents
 * Intuitive Aptitude: She can disassemble complex devices explosively (separating every last component, such as screws, nuts, circuit boards, etc.) and, just as quickly, easily assemble complex devices.
 * Psionic Spikes: She has the ability to create destructive psionic spikes that destroy the physical objects that the spikes come into contact with.
 * Telekinetic Sensitivity: She has the ability to feel the texture of objects she has a psychokinetic hold on, feel when other objects come into contact with them, and probe them at a molecular level to identify if they contain certain materials or feel when two things which she has a psychokinetic “hold” upon are similarly composed.


 * Hypnokinesis: Sky has the rare ability to personally enter, manipulate, navigate and pinpoint her own, and other people's, dreams, which is just short of telepathy but is considered both a rare, dangerous and delicate power.
 * Dream penetration: She can enter other people's dreams, including telepaths as powerful as Charles Xavier, and personify herself in some way, preferably as she currently appears at the time of the performance.
 * Dream manipulation: She is able to manipulate the appearance, circumstances and incidents of a person's dreams, including whether or not they are nightmares and whether or not they remain in a person's memory or in their subconscious or suchlike.
 * Dream inducement: She can induce dreams, including daydreams, into people's minds, and her own, enabling her to put unprotected minds to sleep with a mere thought or gesture.

Abilities

 * Skilled combatant: Sky, without her telekinetic and telepathic powers, has shown herself to be something of an exceptionally skilled and learned hand-to-hand fighter, proficient in kickboxing, karate, kung fu. Once her powers are negated by William Stryker's technology during her captivity, she managed to overpower several armed guards on her own.
 * Expert musician: Sky is an excellent musician, being able to simultaneously play two violins cooperatively in the same song, and being a master pianist. She finds something of a hobby in playing the piano and the violin, using it as a conduit for calming herself down or for finding some form of stability when she cannot control her powers or her fate. She is shown to be able to play instruments just as superbly telekinetically.
 * Linguist: She is fluent in Greek, Ancient Egyptian, French, Latin, German and multiple others, since she is able to telepathically extract knowledge of languages from a linguist's mind, making her impeccably fluent.
 * Swimmer: Sky is a highly skilled swimmer, and is the champion swimmer at Xavier's School, being able to overpower superhumanly stronger young mutants without having to use her powers.
 * Eidetic memory: She has an extremely precise eidetic memory, being able to immediately memorise information so absolutely exactly that she could remember a computer equation that was at least two pages long.

Weaknesses

 * Homosexuality: Sky's most prominent flaw is that she is homosexual, which is probably her biggest internal point of conflict. She confessed to have had sporadic but powerful crushes on both Anna Marie (Rogue) and Katherine Pryde, which became intense obsessions that led to both depression, self-depreciation and a terrifying fear that she wouldn't be accepted - she was outlawed at her original school for being homosexual, and thus is afraid of being excommunicated because of it at Xavier's School. This has since become less of a problem since she has undergone therapy sessions with her mother Jean, and with Charles Xavier himself.
 * Instability: If she becomes emotionally unstable, she loses control of her powers and they will overreact in violent and unpredictable ways, making her extremely dangerous to the wrong people. This weakness is more attuned to her telekinesis, which will be violently utilised unconsciously if she becomes overcome by powerful emotions that she cannot control.
 * Autophobia: Despite being able to access the minds of others and to communicate with them that way, she is still plagued by a fear of being completely alone in the world.