"Today's seminar is about a subject near and dear to my heart: Reality Benders. Type Greens. Mary Sues. Bixbies, Shapers, Wizards, Gods, Devils, Outside Observers, call them what you will, these are the guys that change reality based on perception and willpower."
Poron from Sally the Witch. More exactly, when she throws a tantrum and starts crying (she is a little girl no older than five), her magical powers go haywire and start warping whatever's left in her surroundings.
For that matter, Yuki and Ryouko, as well. Their powers aren't as rule-breaking as Haruhi's, but they can still launch MySQL injections into reality. To take this to a greater degree, in Disappearance they can even hijack Haruhi's unlimited power! The difference between Haruhi and the Interfaces is that Haruhi can create "data" out of nothing while the Interfaces can "only" alter existing data.
Related to the trope notes above, there is a good reason why Haruhi can get away with being a protagonist and a Reality Warper; She has no idea what she is or what power she holds. Most of her warping is done through childishly wishing something to be different.
In Gurren Lagann the main mech creates drills from sheer willpower for no explained reason other than boiling blood. The main plot of the series was that the Anti-Spirals were afraid of the spiral races creating so much matter through spiral power that they would turn the universe into a black hole, bringing about Spiral Nemesis. Ironically, they were beaten by Simon creating a mech over 10,000,000 light years tall to beat them.
Emperor Charles in Code Geass attempts to become a reality warper with his Ragnarok Connection. He's foiled when Lelouch uses his Geass on God and warps reality right back again...and destroys his parents in the process.
In the third movie, The Spell of the Unown, the Unown have this power, and create Entei, who in turn grants a girl's wishes with the power. This quickly becomes supremely dangerous.
Several other Psychic and Ghost type Pokemon are said to have this ability too, most notably Gardevoir, who can actually create a wormhole out of thin air just by thinking about it. Though, to be fair, it's implied that doing so would cost the Gardevoir its life due to sheer strain, so it's a rather limited example.
Palkia, the Pokemon of SPACE ITSELF, who relocated a town to another dimension in the tenth movie.
And Arceus, the creator of everything in the Pokemon universe.
One episode of Mushishi featured a swordsmith infected with a mushi that let him foresee disasters and warn people beforehand. Ginko gave him a medicine that would suppress them, but after his daughter died during something he hadn't dreamed of, he stopped taking it. Turns out it was actually a mushi that brought his dreams to life - causing unnatural disasters. He wouldn't have foreseen what killed his daughter because it was a normal disaster. And, one night, he dreamed of his entire village dying gruesomely...
Drosselmeyer and Fakir from Princess Tutu, of the Rewriting Reality variety. It seems to have limits, but what they are (other than being born with the talent, imagination and skill) are unknown.
The Big Bad of the 12th Dragon Ball Z movie, Janemba was a Reality Warper so powerful that it had virtually complete control of the afterlife, having resurrected everyone even, and especially the old Big Bads, their corresponding dragons, and an army of Mooks, and yes even Those Wacky Nazis were revived along with Hitler himself, and managed to trap Enma Daiou, the Lord and Judge of the Dead himself in a large jelly button-shaped prison, and managed to transform Hell into a play-land full of floating jelly beans. Much of which was in one go.
East Kaioshin has shades of this ability, though probably only to a limited extent. We see him create an extremely powerful (and fictional) metal. Piccolo has also been seen "materializing" things.
Majin Buu seems to be able to alter matter with his head tentacle. His famous "turn into candy!" is the most common use of this power, used for the first time against Dabura, but it's also how he builds his house.
The main character of Psycho Busters has a variant on this ability: If something life-threatening happens to him, he goes back in time and does it all over again. Repeatedly. Until, by pure random chance, something happens to negate the harm done to him—for example, a roof tile falling at exactly the right moment to deflect a bullet flying at his head, or a psychokinetic projectile just barely missing him...five times in a row. He's not consciously aware of this at first, so apart from occasional deja vu, he's under the impression that he's just ridiculously lucky.
To a lesser extent, every single Esper. Their powers work by substituting their own reality into the real world using AIM (An Involuntary Movement) fields, which also acts as Applied Phlebotinum for many story arcs.
Perfect Majins (Magic Gods) fall into this category, being able to recreate the world as they please with little effort (once they overcome the 50/50 success rate problem).
Orihime powers are based around the concept of rejecting reality, but are limited by both her emotional state and what she personally believes is possible or not. Hacchi advises her that where mastering her power is concerned, she needs to remember that she shouldn't think of how the world works but how she wants the world to work.
The Hougyoku is a reality warper device. It resonates with the deepest desires of the hearts it comes into contact with and then manipulates reality to make those desires become reality. When Aizen fuses with it, it sends his body into multiple transformations, increasing his power level each time until eventually his deepest desire is unmasked and the Hougyoku depowers him: apparently, his deepest desire was to be a normal shinigami rather than an exceptionally powerful one.
Fullbring manipulates the souls of matter, allowing a fullbringer to do a variety of things from manipulating air molecules to be able to stand on air to transforming objects into entirely different objects. Each fullbringer has one item to which they're uniquely bonded and this informs the nature of their fullbring and how it can be weaponised. Ginjou transforms a cross into a sword, Jackie transforms her boots to make her a powerful kick-boxer, Yukio transforms his PlayStation to turn battles into lethal video games, etc. It's confirmed that Sado is also a fullbringer; the object he transforms and weaponises is his skin.
Gremmy, one of the Sternritter, has the ability to make anything he imagines into reality. He can turn his opponents bones into cookies or his own skin into steel. Problem is that there is nothing Gremmy can imagine that Kenpachi can't cut and when faced with such a monstrous opponent he nearly kills himself by imagining his own death.
Rei Ayanami too actually. This "might" have been the goal of Gendo Ikari all along as the only means to resurrect Yui Ikari. At the very least, Rei may have been given/returned her status as Co-Creator of the Universe, and possibly created new alternate universes for other Shinji's to live in and be happy. The other Co-Creator, Kaworu Nagisa, essentially relinquished his powers too, so Rei is essentially become God. Probably. Maybe. Ok, it's still confusing...
Potentially, it seems the EVA's are actually designed to be able to do this for whoever can efficiently control them and combine them with the right materials. Only EVA-01 ever succeeded so far...but yeah, it does have a tendency of causing reality to mess up just by its own existence at times. The Angels themselves too, since some of them can be classified as their own entire sub-universe.
This is the true power set of the RahXephon. The whole point of the ancient conspiracies going on throughout the series is to influence the pilots so they will reshape reality in a certain way.
In Mahou Sensei Negima!, Fate Averruncus seems to have a form of this ability. He's apparently able to rewrite the reality of the Magic World, mainly because it's actually an artificially created dimension, which can be modified on the fly, up to the point of erasing magic world natives from existence. The source of the power is a set of items that allows them to utilize the power of the mage that created the magic world in the first place. However, it has a rather glaring limit in that it doesn't appear to directly work on beings not originally from the magic world.
Actually, it's not Averruncus, but Asuna who has this ability. Fate is merely abusing her power.
Also Nodoka, however briefly, when she steals one of the aforementioned items from one of the bad guys and uses it to teleport herself and Asakura. The bad guy recovers it soon after, but it's still an impressive feat.
Jack Rakan is also a notorious violator of the rules of reality. Not only he breaks the laws of magic, but also did temporarily summoned himself into existence after being erased. He did this by SHEER FORCE OF WILL.
Miharu of Nabari No Ou can do this, thanks to the Shinrabanshou (which means 'everything in the world'). It actually is harmful, though; previous users including the last vessel, his mother, have been killed by it.
Ai Enma from Hell Girl seems to be able to do this, as seen when she's sending people to hell and during the season one finale, when she's bullying Tsugumi to make her send her father to hell. Although maybe she was just mind raping her, it's not very clear.
It is revealed later that Izanagi is an imitation of the Sage of the Six Path's power, which is what he used to separate the 10-tails into the nine tailed beasts.
Ayakashi Ayashi borrows a healthy dose of this trope for Yukiatsu. His Ayagami can weaponize the kanji in people's names, plain and simple. How freakin' badass is that?!
Kara no Kyoukai reveals that Ryougi Shiki's third personality is this, due to the person's connection formed with Akasha.
In the Eureka Seven movie, Holland explains that Renton & Eureka could create the "Agony of Doha" event which could reshape the world as they envision, like for example, a world where time stops ticking. It is widely believed in the ending that the world has either been reshaped into the world that Renton & Eureka envisioned, or Renton's entire dream world being pulled into reality.
Kyuubey himself also has this power in a limited way, since he's able to give people reality-bending magic powers and can magically grant wishes, including the causality-defying, multiverse-rewriting wish Madoka makes at the end.
All witches qualify too; they rewrite reality in their immediate vicintiy into an Eldritch Location(often giving an insight into the mind of the magical girl who spawned it) in order to manifest. In an inversion of the usual MO, the two most powerful, Walpurgis Nacht and Kriemhild Gretchen (ie Madoka.) don't; they don't need to.
The "demon" of the Advina Avis (aka Ronnie Schiatto) from Baccano!. The full extent of his reality warping abilities hasn't been demonstrated, but so far has included materializing and dematerializing matter at will, bestowing forbidden knowledge, granting people immortality and other abilities (as well as slapping on whatever perks and restrictions he wishes), appearing anyplace at anytime, global mind-reading, and shifting in and out of human form at will. Generally, he doesn't go around doing these sorts of things very often, however, because nigh-omnipotence can become quite boring after several-hundred millenia.
Doraemon, with his gadgets, can warp reality to it's full extent. Check out the "what if" phone booth. It's able to create a whole new world based on the wish.
Some of the more powerful/bizarre Nen abilities in Hunter × Hunter border on Reality Warping. The straightest example is Alluka Zoldyck, the second-youngest and most feared member of the family, who can grant wishes like a genie...but with a really nasty catch.
Sakura Yoshino of Da Capo is a witch, but didn't get trained on how to control her powers because her grandmother (also a witch) died when she was young. To protect her, her grandmother plants a wish granting cherry tree. In the original visual novel you learn however that Sakura is granting the wishes HERSELF and the tree is only a symbol of her power. Which is why she must excel at absolutely everything she does or people who might beat her at something will suffer accidents and possibly die. This is why she flees Japan for America and graduates from college at age 15 because to do otherwise would doom everyone around her.
In Da Capo 2 she's still alive and still a child presumably because her powers are still in effect from the first game despite the cherry tree having died further confirming the power is within herself.
Haruka in Noein is possessed of a power known as the "Dragon Torque", which gives her the ability to do stuff like visualize alternate universes, survive interdimensional travel with no problems, and be unaffected by time stops. Unfortunately, she doesn't have any real control over this power, and its use is mostly instinctive.
Rustyrose from Fairy Tail is only limited by his imagination.
In the 2012 Black★Rock Shooter anime, Black Gold Saw demonstrates these kinds of powers in Other World. Though, even with this utterly broken control over the entire world they exist in, Black Gold Saw is no match for the real threat.
In Date A Live the Realizer makes "human imagination into reality" and powers the setting. The result is a bit like a Standard Super Hero Setting, where most tech is modern day, with a few organizations having access to much more advanced stuff. The Realizer is used to implement a variety of superpowers, but is implied to have a number of limits. The talent to be able to use it is very rare(used as a justification for Child Soldiers), along with having fairly significant limits with regard to the range and complexity of powers that can be created; clothing changes, flight, super strength and defensive shields can all be created, but the AST needs to have pre-made weapons rather than creating them themselves. It's also mentioned as the way to quickly reconstruct damage caused by various battles and supernatural events.
Aki's Psychic Powers in Yu-Gi-Oh! 5Ds can best be interpreted this way. By using Duel Monsters cards as a focus, she can give the monsters a pseudo-life, and make the Spell and Trap Cards generate actual energy. The end result is, the duel becomes very real, able to injure or potentially kill her opponent, sometimes destroying the room or even a whole city block in the process. (Many have compared this to a Shadow Duel, saying it's similar, only with psychic abilities rather than supernatural ones, but duelists who have experienced this type of power and Shadow Duels, including her Evil Mentor Divine, claim that Shadow Duels are even more potent.) Unfortunately for Aki, she initially had very little control over her ability, and even less when she was angry, and was full of self-loathing as a result; a lot of this can be blamed on Divine, who was purposely fueling her anger while claiming to help her control her powers.
Divine could do this too, to a lesser degree. While he couldn't cause as much widespread destruction as Aki could (at least, if he could, it was never witnessed), he could utilize cards as potent weapons even outside of a duel, like using a Hinoama card to shoot fireballs at an enemy, or creating a real sword from a Psychic Sword card.
Sasami Tsukuyomi from Sasami San Ganbaranai is…sort of this, at least for the first few episodes. She possesses the power of Amaterasu (essentially, the power of God Almighty), and while she can't really use it, the "myriad gods" are perfectly willing to bend the laws of time and space to appease and befriend her. In Episode 1 she's hungry and craving chocolate, so what do the myriad gods do? Turn the entire world into chocolate.
Heretic Gods in Campione! act like this to a degree. They passively change the environment in relation to their nature but can also actively warp reality if they focus their power or invoke an Authority. Godspeed is a minor example, where the god warps space so that they are traveling a shorter distance than they actually move.
Proteus on the side of bad. Fortunately, he seems to have limited range, and limited ability to make permanent changes. If he could, he'd make Emperor Joker look like a day at the park.
David Haller aka Legion, son of Charles Xavier, which is actually only one of his Combo Platter Powers, but each comes with him having a new/different alternate personality.
On the "insane, or is he?" side, you have Psylocke's wacky brother Jamie. He sees the world as a collection of "quantum strings," and by manipulating those, he can manipulate... well, due to Power Creep, Power Seep, it went from "everything around him" (think Proteus) to "everything, period" (think Q.) It's a good thing for all involved that the "mad" Jamie is more of a Bunny-Ears Lawyer who actually knows what he's doing with his increased power.
On the side of whoever's holding them, the Cosmic Cubes. Except for the ones that have evolved into sentient beings, which they invariably do if they last long enough.
The Beyonder is an unfathomably powerful reality warper, just short of Omnipotence. However he was waaay too powerful for his own good. Although he did not know how to defecate until Spider-Man patiently showed him how. Way to take one for the team, Spidey. Beyonder was later revealed to have formed from a not-quite-complete Cosmic Cube.
Doctor Doom towards the end of The Secret Wars, which ended up being his undoing, as he was tricked into thinking about scenarios that would bring back his defeated opponents to fight him, thus making it happen.
The Molecule Man, Owen Reece, who can manipulate reality thanks to his ability to reshape molecules. This power comes from the missing fragment of the Cosmic Cube that formed the Beyonder, which incidentally left him immune to Beyonder's power. Unfortunately for Reece, he's always had one big problem: a serious lack of self-confidence.
Billy Kaplan, aka Wiccan of the Young Avengers, has similar powers to the Scarlet Witch and may very well be the reincarnation of her lost son. So far, the worst he's done is knock out a bunch of bad guys, but that was enough to make the Avengers nervous.
Mad Jim Jaspers (referred to by other characters variously as "reality butcher", "the Jaspers monster" or "the Jaspers thing") has been described in The Official Handbook of the Marvel Universe as the most powerful reality-warper ever to exist in the Marvel universe because he is capable of affecting realities other than his own. Jaspers is also totally insane and takes to poisoning and twisting reality around him because it seems like good sport. He was only defeated when the Fury, a super-adaptable cyborg created by the Jaspers of another universe transported him to an empty void outside reality where there is nothing for him to control, and incinerated his brain.
A weaker Mad Jim from an alternate world was so powerful, his universe had to be destroyed. If the main (616) Mad Jim were to be fully powered, that may not be enough.
Merlyn:This version of Jaspers. Is too powerful, too dangerous. His counterpart could at least be halted, even if it meant destroying his entire continuum. This one is not so easily containable. And if he cannot be defeated, then the omniverse shall fall into chaos, and a new and hostile god shall play dice with matter.
Given that it was made by use of his powers and taking into account its somewhat imaginative attitude to having a healing factor, the Fury might well count as well.
The Impossible Man from the planet Poppup, one of the Fantastic Four's earliest adversaries. He generally only displays shapeshifting in regular continuity. But a very creepy version of him appeared in the Exiles, where an alternate-universe Impossible Man became semi-psychotic due to a botched mind control attempt on him. He turned the Avengers into paper dolls, transmogrified most of the population of Washington DC into glowing butterflies, and didn't realize any of what he was doing — he was just trying to be funny. Thankfully, he managed to undo it all once he broke free.
In X-Statix, Arnie Lundberg was a Reality Warper who, before his Heel-Face Turn, terrorized his home town in a manner reminiscent of "It's A Good Life". Oddly, he could inflict transformations on others, but couldn't fix his own severely scarred face.
In a back-up story in an issue of X-Men Classics, the Watcher speculated that the ability to alter the fundamental nature of reality is the ultimate power of the Phoenix Force. She falls well short of the likes of the Scarlet Witch at the height of her powers in practice. Dark Phoenix did destroy a solar system, but it was by using a star as fuel; sucking up part of its energy caused an imbalance that caused a supernova, rather than her erasing it with a wave of her hand or something. She can use her maxed-out telekinesis to rearrange an object's subatomic particles until you get some other kind of matter - she once turned a tree into solid gold easily - and she has power over life and death as part of The Phoenix motif, so she's perhaps on the low end of this list.
It was sometimes implied that Phoenix's power was limited only by Grey's imagination. Dark Phoenix's destruction was somewhat limited by the fact that Jean was fighting against herself. She easily could have killed all the X-Men, but couldn't bring herself to do it. As Phoenix before she became Dark Phoenix, she unconsciously limited her abilities so that at some crucial moments she tried to channel more power, but instead a mental circuit breaker was tripped, shutting off the power completely.
The Sentry started out as a Flying Brick with various other ill-defined powers, but it seems the truth is he has control over matter itself. He killed the Molecule Man in about two seconds and can resurrect himself even after being disintegrated on a molecular level. It's said that if he went completely batshit insane, the Scarlet Witch (House of M and Decimation) would be nothing by comparison. Since when controlled by the Void he levelled Asgard in a matter of moments just through his flying brick powers, this is worrying. After going through a spectacular Trauma Conga Line, he has now chosen to be dead. However, for the Sentry in particular, Death Is Cheap.
The Ultimate Avengers version of Loki. It seems via somehow tapping into the Odinforce, he is able to do things like change Thor into a mortal form, make himself immune against Mjolnir, change the color of the sky, and teleport a host of monsters, among other uses. The trick is, he can't use it too many times at once or much of it without alerting Odin to it.
The Shaper of Worlds could alter reality on at least a planetary scale, but lacked imagination and so had to use others' dreams as a template. (This was because he was an evolved Cosmic Cube. In fact, his true form resembles a Skrull, because that species most often used the Cube he used to be.) He served as a tutor in reality-shaping for Glorian, a human, and Kubik, also an evolved Cosmic Cube.
Anyone who wields the Infinity Gem of Reality has the power to warp reality. You do need to have the other Infinity Gems to control that power.
The ring of the superhero Freedom Ring can manipulate reality within a sphere of a radius of 15 feet, due to the ring holding a shard of a Cosmic Cube. This is a rare case of very limited reality warping, as if any creation leaves the sphere, it fades from existence.
Absorbing Man once used his power to duplicate the properties of a Cosmic Cube. Stuff got very strange when he started punching stuff, like transforming people's costumes into older versions.
The obscure oneshot X-Men character Mister Marvel put an interesting spin on this. He could alter reality, all right... but the changes to the universe he made were perceptible only to him. In effect, he was living in a fantasy world of his own design. To himself (and only himself) he was the world's greatest superhero; the rest of the world saw him as a frail old man. Then House of M happened, and suddenly he was a frail old man for real.
Doctor Strange at full power can do astonishing things to the fabric of reality, but for the most part he polices reality warpers rather than acts as one himself.
Ms. Marvel dealt with a kid with such powers once in her own series.
The Galacta: Daughter Of Galactus miniseries suggests that all mutants are actually unconscious reality warpers who alter reality to make mutant powers possible.
During the Heroic Age storyline, The Hood had the potential to have incredible reality warping powers after the stole four of the Infinity Gems, including the Yellow Reality Gem, in his plan to murder the Avengers out of revenge. However, as Uatu the Watcher noted, while his ability to use the Gems was impressive, he was still limited because he simply thought about using the Gems to enhance his own power rather than really thinking about what he could do with them; he mostly just engaged his enemies in direct combat and never considered just using them to will them out of existence.
The inter-dimensional imps Mr. Mxyzptlk and Bat-Mite (on the Chaotic Neutral side). In "Emperor Joker," Mr. Mxyzptlk accidentally gives most of his power to The Joker (on the extremely Chaotic Evil side!). Earlier, at the end of the Bronze Age Batman/Hulk crossover, the Joker got reality-warping power from the above Shaper of Worlds (Marvel).
The mother of Cascade in Sovereign Seven: She remodels all of her Earth (architecture, fashion, technology level, etc.) every few minutes. It turns out she began as a normal (but very powerful) superhero who prevented an alien invasion but failed to stop the aliens from destroying Earth in revenge. Then she used her powers to reanimate the world, so that the daughter she was pregnant with could have some semblance of a normal life. She's also best friends with Darkseid for some reason, but how they could ever have met was never explained.
From the Kingdom Come universe, Jonathan Kent, the son of Superman and Wonder Woman, who has full control over hypertime.
Ibis the Invincible, who immigrated to DC continuity along with the Shazam titles, has the Ibistick, a magic staff that can warp reality on command.
The Time Trapper can manipulate reality in everything BUT the present, hence his name, he traps you in time. Oh yeah, he can also move boulders.
Volthoom, the First Lantern and wielder of the first Power Ring, can manipulate time, space, and matter up to a certain area and has the potential to rewrite the entirely of reality itself.
Captain Atom became this in a story arc entitled "Quantum Quest," in which he created his own universe over which he had total control. It didn't end well. Also, it is possible that it was All Just a Dream. On the other hand, it has been hinted at that he might he might be that powerful in the regular universe too, but just doesn't realize it or is in denial about it. Dr. Manhattan, an Expy of Captain Atom, in Watchmen has telekinesis down to the subatomic level, allowing him to rearrange matter at will. Technically, this is a little different from changing reality outright, but since he's the most ridiculously overpowered character in the saga, nearly everyone there considers him a Reality Warper.
In all incarnations of the character (comic, movie, cartoon), The Mask has this ability by virtue of effectively being a real-life Tex Avery character.
If Manhattan counts, then Doctor Solar, Man of the Atom does too.
The Rumor in The Umbrella Academy has the ability to tell lies that come true, which she usually does by saying "I heard a rumor that...". As her power is speech-based, it can be disabled if anything happens to her voice.
Manservant Neville in the The Doomsday Armageddon Apocalypse, the graphic novel conclusion to The Middleman. To the point where defeating him requires an army consisting of every Middleman who has ever lived.
Sebastian from Gloom Cookie can do this both wittingly and on accident.
The Plutonian from Irredeemable is one of these, though he isn't aware of it.
In the Robotnik Reigns Supreme arc of Sonic the Comic Doctor Ivo Robotnik. On the other side of the ocean, Amy Rose is this, but on a supposedly limited scale after having absorbed the Chaos Ring in a desperate attempt to be older and a Freedom Fighter. So far, the most she's seen doing is summoning her Piko Piko Hammer. There's also Knuckles during his "Chaos Knuckles" phase. He even goes so far as to try to alter time to save his people, but that goes as well as you expected.
The Golden Age Green Lantern had powers so nebulously defined as to be limitless. The Batman Black & White story "Guardian" depicted him as essentially capable of anything he can imagine. He describes this as a curse, however, and says he quit the hero game because his power scared him, was too much for one man. In his words, Gotham needs a guardian, not a god.
In Justice League Elite, the Fourth World being Eve has the ability to reshape reality, although it appears to be limited - she can't make any changes of her own volition, and there is an upper limit to the scale on which she can make large changes (she is unable, for instance, to change reality so that Superman never existed.)
In Uber, this is the true power of distortion halos, which can twist matter so precisely that they can kill a man without even breaking his skin. At one point, Katyusha uses hers to instantly process soil into edible paste. Sieglinde uses hers to blow people up, build a bridge, and lighten her hair. Siegmund uses his to melt Hitler's mouth to shut him up and twist a valve in his heart.
Brittany develops this ability in Special, and while learning how to control it turns a pillow into a goldfish and makes Lord Tubbington talk. It fits with her Cloudcuckoolander personality. It's later revealed that her powers, like some of the other kids', leaked through before the story began. Which means that some of the bizarre things she talked about (her cat reading her diary, getting lost in the sewers) most likely actually happened.
General-Admiral Makarov, the Big Bad of the Shining Armor Arc, can do this to a certain extent in his immediate surroundings, due to actually being a creation of Pandora's; he mostly does this to boost his image and ability to win, as part of his status as a Parody Sue. During the climax of the arc, he uses a Paradox Engine to boost his powers, in order to wipe out all his enemies and establish himself as the flawless hero-ruler of the whole world. Fortunately, an enraged Shining Armor destroying the Engine, combined with Pandora nullifying his Plot Armor, causes the various plot holes he's created to catch up with him, leaving him weakened and leaving his forces at a significant disadvantage.
Several Winx Club fanfictions have Mirta upgrade from making illusions to flat-out altering the universe when she gets in the grips of powerful emotions; most explain her wallflower personality as her way of keeping her powers in check.
Fallen King has this. Pegasus, Yami Bakura, and Joey and Tristan gain the ability to summon monsters from the Shadow Realm into reality. Pegasus also alters the structure of his castle, locking the heroes into an endless room.
Several characters are capable of this in Diaries of a Madman. Anyone capable of learning "true magic" can do the same, but Celestia and Luna stamped out the practice due to it being abused.
Films — Animated
The Genie in Aladdin has PHENOMENAL COSMIC POWERS that are certainly far beyond that of any human sorcerer, but he does explicitly state three limitations to them. He cannot kill (directly), make someone fall in love, or bring the dead back to life. It's not quite clear if these are simply beyond the Genie's powers or if they are within his capability but are the only wishes he can refuse to grant; when telling Aladdin about these limitations he says that bringing the dead back to life "is not a pretty picture, I don't like doing it!", which suggests the latter. The killing thing seems to be a direct impossibility, but as Genie!Jafar states in Aladdin: The Return of Jafar, "You'd be surprised what you can live through." He also seems to be unable to make people fall in love. He was completely surprised when it appeared that he had granted Jafar's wish to make Jasmine love him. Once freed he is just a sorcerer who has the ability to break the fourth wall. However, he has shown the ability to predict the future and "read" reality like a book. He has the ability to read the script of the current episode as well as the ability to consult "the big book of things we're not supposed to know" in order to find out where people are and what they are doing.
Films — Live-Action
The warlocks in The Covenant don't seem to read comic books. Their hereditary magic power that they have no real name for is exactly this.
Freddy Krueger in the A Nightmare on Elm Street series of films possesses this power. Initially, he can only warp reality in the dream world, but as the series continues and his powers continue to grow, they begin to extend more and more into reality as well.
The mysterious Strangers in Dark City use this to Mind Screw their captive humans. Technically, they're high-powered telekinetics that can warp matter into new shapes; individuals can only use it to levitate across the city and occasionally conjure doors out of solid walls (though their leader, Mr Book, is vastly more powerful); as such, the Strangers perform their best work in perfect unison, combining their powers and amplifying it through machines to reshape the City. The hero Murdock finds he has this ability as well- and is so powerful that he can create entire landscapes at will once he learns how to control his abilities.
The Adjusters in The Adjustment Bureau are able to make minor changes to the environment as long as they are in range.
Several villains in The Matrix (and, later, the heroes) mixed a little of this into their combat. Although technically they aren't warping reality per se, but rather, manipulating the rules of a virtual reality. The most vivid example occurred near the end of The Matrix Reloaded, as Neo flies as fast as he can through the city to rescue a falling Trinity. The power of his bending causes a massive wake that drags cars and debris behind him.
The Beast in the Poltergeist movies (a composite spiritual entity created by, and mostly represented by, the ghost of Preacher Kane, introduced in Poltergeist II: The Other Side) seems to be capable of this, opening up spatial rifts that lead into other dimensions, warping rooms into Alien Geometries, controlling the weather and bringing everything from toy clowns and trees to braces and mirror images to life. Some of its powers involve creating illusions rather than truly reshaping reality, but the line between the two isn't always clear.
This is the entire point behind the architects in Inception. Their job is to craft dreamworlds that the rest of the teams move through, while at the same time creating mazes to trap and confuse the subconscious projections of the dreamers' minds so as to keep them from attacking. Being architects, however, they can also alter the dreamworld's properties to further confuse and fight the projections, but the more they shift and alter reality, the faster the projections converge, the more violent their responses, and the more heavily they are armed.
In The Traveler, Mr Nobody has such an ability whereby whoever hears his "confession", it will become a reality. Pretty broken ability for a ghost.
Jareth the Goblin King in Labyrinth — he can cause the Living Labyrinth he rules over to spring traps on the heroine and her friends at just the right moments, conjure things from thin air, and manipulate time. In fact, the climax has him tempting her to give up her quest with the promise that he can give her anything she wants. But while he has powers over time and space, she realizes that he doesn't have any power over her and stating this is enough to defeat him.
In The Chronicles of Amber, the Lords Of Amber actually do this in reverse. Instead of changing the universe, they move themselves into successive nearly-identical universes more to their design. Although the question of whether they actually travel into pre-existing universes or actually will them into existence, or even if they can grasp a fourth space-time dimension unknown to us (not unlike a 3-dimensional object would seen from the perspective of a 2-dimensional one) is never really clarified.
Corwin himself eventually comes to doubt the solipsism hypothesis, on the grounds that he'd long since played the game of traveling to the limits of his capacity to comprehend reality and has now found a path of external origin leading beyond those limits. In general there seems a granularity to Shadow; some changes aren't findable (such as a world exactly like the one you're in except with a certain person having a different personality or memories), Shadow-travelers with sufficiently similar destinations in mind will tend to end up in the same place, and many minor uses of the power behave more as if they're modifying the existing reality rather than moving the user into a subtly different one.
Wizards in Harry Potter have the power to conjure some things using their magic, but not others, such as food. How exactly "food" is defined and how it's fundamentally different from non-food in this account, is, of course, never explained or explored. Also Voldemort apparently placed a curse that makes sure that every teacher appointed to the Defense Against the Dark Arts job only lasts a year. Without fail, at the end of every year something will happen to get rid of the teacher.
Wizards of Ursula K. Le Guin's Earthsea universe can also Reality Warp if they were to use the OldSpeech to change the true name of a thing. However, this is rarely if ever done, meaning that the magic actually practiced by wizards consists chiefly of illusions. This doesn't mean "illusions" as in stage magic, just "not actually creating things." For instance, you can conjure food and water—but if you do it with illusions, they won't fill you up or quench your thirst, and if you do it through reality warping, you've probably destroyed the universe, or at least put it in serious danger.
Emmanuel and Zina in The Divine Invasion. Either that or everyone's crazy, which is equally possible. The two characters have a disagreement over how the world should be run, reflecting perennial mystical themes and Kabbalah.
The Ellimist, and his archnemesis Crayak in Animorphs, as well as Crayak's servant the Drode.
Anthony Fremont from the Jerome Bixby short story "It's a Good Life". This story was later adapted as a famous episode of The Twilight Zone. This depiction of Anthony may be the scariest example of a Reality Warper to date. In the sequel, Anthony's daughter is also a warper—in fact, she's more powerful.
Adam from Good Omens. Being a child, his unconscious alterations of reality are innocently whimsical at first... until his destiny as the Antichrist calls. He manages not to end the world through Heroic Resolve and uses his power to prevent a showdown with the Devil himself.
Crowley and Aziraphale, being a demon and an angel respectively, also have reality-warping powers, though to a lesser extent. For instance, Aziraphale can turn cheap rotgut wine into "a perfectly acceptable, though rather surprised" fine older vintage. Crowley can turn the weapons of a management-skills-retreat paintball war into real guns.
The Pink, one of The Brothers Grimm fairy tales. In the story, the prince is capable of granting his own wishes. Unfortunately he's not very smart. Upon finding out that the man he was raised by kidnapped him as a baby in order to exploit his abilities, the prince turns him into a poodle that eats hot coals until he belches fire. Then, instead of wishing himself to his real home, he turns his girlfriend into a pink (as in a Dianthus armeria plant) so it's easier for him to travel, and walks all the way there. Upon getting home, his mother, who was wrongfully imprisoned for his presumed death, commits suicide. His father then dies of heartbreak. The kidnapper is sentenced to death, placed in an iron maiden, and rolled down a hill into a river. The prince marries his girlfriend, becomes king, and lives happily ever after.
Satan (and sometimes lesser demons) is/are usually depicted as having this as well, but usually limited by something like imprisonment or having to make an agreement before stealing a soul. With both it depends if there's some Truth in Television.
Jesus walks on water, turns water into wine, heals diseases with just a touch, raises the dead, feeds five thousand men (and the women and children with them) with only a few small barley loaves and a couple of small fish, dies and resurrects himself...
Once, the sun was ready to set during a war that lasted all day, but Joshua, current leader of the Israelites, figured that their enemies would try to escape under the cover of darkness, so he shouted, "Sun, be motionless!" so that the war could continue uninterrupted and his men could make sure that every last enemy was killedand God made it happen.
Jesus told them they were faithless wusses and the disciples shut up. If that wasn't cool enough, he chewed out the storm, and it shut up, too. That has to be our favorite part, how he's just annoyed by the whole thing, as if being bothered to stop an entire weather system was equivalent to getting woken up by your girlfriend to go kill a spider in the bathroom.
The Islamic Spirits called Jinn (Genies) are said to have this power. One example is The Arabian Nights
The Dancers at the End of Time by Michael Moorcock shows Earth 1 million years in the future, where mankind is a whole civilization of reality warpers… well, a decadent civilization, their (our) numbers being reduced to a few dozens, and the fact that they (we) have used and abused their reality bending powers for 1 million years means that almost all the energy of the universe has been used up and the heat death of the universe is imminent until one of them discovers that, being part of a multiverse, the real amount of usable energy is endless: tapping a tiny bit of energy in a infinity of universes is harmless and allows the dancers to continue their dance, forever, and ever, and ever, and ever...
In Gaunt's Ghosts books, Soric's psychic abilities conjure up things, including messages in his own handwriting from the future. When he is imprisoned, they strip him of all effects and his room soon fills with paper nonetheless. (Unfortunately.)
Coin the Sourcerer, in Sourcery. Whereas normal Discworld magic requires hours of research, lots of preparation and, due to innate physical laws, exactly as much effort as doing things normally, a sourcerer (so named because he is a living source of boundless magical energy) can alter the world with a snap of his fingers. The bad news is that once the wizards get their hands on this power, they start recreating the Mage Wars, which means Innocent Bystanders run the risk of being Reality Warped into a non-viable form. The really bad news is that all this Reality Warping weakens the fabric of said reality, allowing the Things From The Dungeon Dimensions in.
The good news comes at the end: Coin realizes the Discworld is too small for him and in doing so reveals why the Discworld never keeps sourcerers for long—they make their own realities to live in.
In The Science of Discworld, the thinking engine Hex uses the Loophole Abuse of potentiality to calculate his way into creating some new processing capacity for himself. The narrative Lampshades that this is "garbage, but not complete garbage".
In the French-Canadian Folktale of the Duck-Dog, little John, the main character, was given this power at birth by a fairy godmother. The scene is absolutely hilarious as in most well-known versions the godmother is apologetic about giving him this power as she couldn't think of another one. It went something like this: "I can't think of anything specific right now... Here, just take the ability to have anything and everything you want just by saying it. Sorry for the lame blessing."
One particularly memorable scene from Wicked (The book, not the play) was Elphaba's sighting of a sickly Chistery from across a river. Despite her famous allergy to water, she bucks up and steps into the raging river... only for it to freeze beneath her. When her son recalls this in the next book he cites it as "The world bending itself to meet her will."
Daniel from The Dangerous Days of Daniel X by James Patterson. He can do most of the things listed in the description, as well as create people. The only "catch" is that the people must once have existed. An example is that he often creates his dead parents and his sister that his mom was pregnant with when she died. He is also a Voluntary Shapeshifter.
The problem is, there are plenty of bad guys around who can do the same thing, and some of them are better at it than he is. And he's just as vulnerable to sneak attacks, ambushes, and underhanded tricks as the next man, and when you're fighting other reality warpers, those tricks can be SERIOUSLY underhanded. For example, the Big Bad of the book gets the upperhand on Daniel by taking the form of a girl, and making Daniel fall for her.
Sphere, by Michael Crichton, has the, well, sphere, which causes people who go into it to gain this power. Causes all sorts of havoc when people get it who are deathly afraid of giant squids, and so keep thinking about them. Interestingly, the only way to open the sphere up to get inside it is to visualise it opening.
Jeffty from Harlan Ellison's short story "Jeffty is Five". Albeit his power just works in a very specific way - he stays a five-year-old boy forever, and also preserves somehow the media he loves. His radio plays serial programs no longer produced on radio stations that no longer exist. They are contemporary, all-new shows, however; not re-runs. He can buy comics such as The Shadow and Doc Savage that are, again, all-new although they are no longer being produced, and long discontinued pulp magazines with new stories by Stanley G. Weinbaum, Edgar Rice Burroughs and Robert E. Howard despite the authors being long dead. Jeffty can even watch films that are adaptations of old pulp novels like Alfred Bester's The Demolished Man.
The Eyes of Kid Midas plays this quite darkly. The artifact that's used to change reality can do anything and everything, as tested when the main character says that two plus two makes five—but whatever it's done, it can't undo. The main character has even less self-control than Haruhi Suzumiya, so by the climax, reality itself is fragmenting.
Anyone who gains access to even some of the power of the Well World computer (or develops an analogous system). The human-built computer Obie has the power to warp a planet. The Well is the operating system for the Universe, and has been rebooted several times (thankfully by the good guys).
In The Legends of Ethshar novels by Lawrence Watt-Evans, every other magical discipline follows rules and involves some kind of work, but warlockry, which manifests suddenly in a percentage of the population in Night of Madness, is an ability to do anything effortlessly just by willing it. This power is checked by the fact that every warlock hears an eldritch whispering in their head and feels drawn toward the same mysterious location, and both of these things grow stronger every time they use it. The more they use their powers, the sooner they will end up there, either of their own accord or kicking and screaming through the sky from anywhere in the world. Nobody knows what's there, because nobody ever comes back.
Warlockry seems more like Psionics, with most powers focused on the self, but Wizardy, even though not effortless, does seem to have less in the way of limits if you know the rituals to follow. And a single change can have massive unintended consequences.
"Mr. Sunshine" from Matt Ruff's novel Fool on the Hill. Retired God Apollo who writes fiction by manipulating the lives of people—and his preferred genres are drama and tragedy.
Various characters in Greg Egan's fairly hard sci-fi novel Quarantine gain the ability to arbitrarily collapse quantum wavefunctions, as long as no normals are watching. This ranges from the trivial (choosing the spin of an ion in a Stern-Gerlach experiment) through to the fairly useful (unlocking doors) to the disastrous (everyone warping reality uncontrollably at the same time)
Damara, the protagonist of Tim Waggoner's Pandora Drive, has reality warping powers over which she doesn't have much control. She struggles to suppress her imagination so that she doesn't unintentionally turn her thoughts into reality, but her power slips out anyway and starts warping reality in accordance with the horrific thoughts of other people.
Augustus Stratton from the manuscript "SCIENCE!", a.k.a. "True Science," is the poster child for this trope. And because you, my dear reader, are seeing these words right now, that means you are merely a part of Stratton's mind. Stratton created this trope. He created this website. Why? Because only he! Knows! SCIENCE!, and only he can bend reality!
Similar to The Matrix example above (but predating it), the main character in Sergey Lukyanenko's Labyrinth Of Reflections gains superhuman abilities in a virtual world after interacting with an entity of unknown origin. He flies, is immune to attacks, and can erase any log he wants with a thought. His powers also extend to the real world, as he can connect to the virtual reality without the use of a computer or an Internet connection. Attempting to get rid of these powers can lead to some nasty consequences, as evidenced by the second book False Mirrors.
Jessica Sorrow, who believes herself to be the only "real" thing in the world and can subsequently make anyone or anything not exist.
Madman was potentially even more powerful, as his Reality Warper abilities weren't limited to erasing things, but could alter them at will. His insanity barred him from directing his power to any specific purpose, however.
Hadleigh Oblivion is another extremely powerful warper, while his kid brother Tommy is a mild one: he can change things only so far as he can make an existential argument that they could've already been that way.
The Reality Dysfunction in The Night's Dawn Trilogy. The possessors use it to change their environments to fit the area they had lived in, and to form their new bodies to look how they once looked - but the latter turns out to be a rather bad idea, as mutating cells naturally leads to cancer. In general, though, the Dysfunction can create or alter anything the possessors like, fuelled by their wishes and emotions.
In Stormcaller by P.L. Blair, the main character, Kathryn Morales, gains this talent (called Shaping) when she crosses to the Otherside. She actually shapes herself to be Kathryn Half-elven, a former RPG character she'd played, and forgets she's not, unconsciously.
The female lead of Of Two Minds comes from a society where everyone can do this. Most people deliberately restrain themselves, but both she and the villain believe that the power should be used to make life better (or at least more exciting.) The sequel takes this a step further: everyone has the potential for this, but people grew sick of living in a World of Chaos, and most societies gave up the power.
All magicians in Gwyneth Jones' Bold as Love series - from Rufus O'Niall, Fiorinda and Janelle Firdous, the three who achieve fusion and potential Neurobomb status, to barely active crystal-swinging hippies like Anne-Marie Wing - are Reality Warpers with the ability to rearrange "the 0s and 1s" of the universe as it suits them depending on how many other minds' power they're able to hijack at the time. Since having full-blown functional magic in this universe also invariably means having severe forest-fire brain damage and schizophrenia, this is definitely not a comfortable thing to be dealing with.
Labyrinths of Echo — as adepts of the Invisible Magic say, "The future is pliable... and the past too." Max himself has a rare (and dangerous to himself) power of "the Arbiter": whatever he truly wishes, goes — "sooner or later, one way or another". An imperfect emulation of this is done via Invisible Magic. Also, as Juffin was told by his older advisor and was shown in side-stories, there are creatures using this for a weird rebirth cycle: anyone with power can give them opening and gradually call into life — from a wizard trying to create the ideal stand-in for himself to ladies talented in magic but unaware of its reality, who imagine one chair in the house they leased is haunted and invent stories about the ghost just for fun.
Keith Laumers'sKnight of Delusions at one point pits two reality warpers against each other, which ends up reading a lot like a pair of little kids playing pretend at each other and shouting things like "NUH-UH, I'VE GOT NUKE PROOF ARMOR" to ward off attacks.
The Cheshire Cat. He has powers that other residents in Wonderland do not, like the ability to disappear and reappear at will, turn invisible (or turn parts of himself invisible), disassemble and reassemble himself at will, and levitate. He seems to only be able to affect himself, however.
The Nannies of Idlewild have this power in the virtual world. Almost always for the benefit of the students. Almost.
Almost every character in "Warp World" has various versions of warping, but of course that is the whole focus of the novel.
What the WICKED organization can essentially do in The Maze Runner Trilogy; the extravagant resources they've been granted resulted in skyrocketing technology levels and analytical capabilities to predict the outcomes of even ridiculously chaotic events.
The Librarian in Please Don't Tell My Parents I'm A Supervillain. The exact extent of her abilities is unknown, but it involves giving life to every book and story inside her library. The kids note that the superhero fan sites were seriously underestimating her power.
The classic: Samantha of Bewitched and all her relatives — when they could control their powers. Also, Jeannie from I Dream of Jeannie, who once made every day of the week Sunday!
Anya, and several other supernatural beings. Anya in particular can only warp reality while granting other people's wishes for vengeance (though she has a lot of leeway in how she grants them), which at one point leads to a Travelling Salesman Montage of her uselessly trying to cajole everyone she knows into making a wish that'll let her use her powers.
The Order of Dagon was a group of monks who altered reality to make Dawn fit in the world. Not exactly a straight example though - rather than actually altering history, it's more implied that they altered the memories of everyone who would have known Dawn in order to insert her (the past is implied to have not changed at all, given how little her presence was even recalled to have impacted it). But they were able to go far enough to use Buffy's own blood to create Dawn from the Key, so that she's truly a Summers despite not having existed for very long.
Likewise, evil sorcerer and demon Cyvus Vail led the team of wizards who altered reality to give Connor a new life.
Much of the superscience of the Time Lords is based on the concept of "block transfer computations," a form of advanced mathematics that can warp reality like no-one's business (in "Logopolis" an organization of mathematicians has been holding back the heat death of the universe for millennia). The Carrionites in "The Shakespeare Code" can do similar tricks with language (something the Expanded Universe refers to as "quantum linguistics"). All of these powers, while capable of nearly anything, require extensive time and calculation to pull off correctly.
In one of the Eighth Doctor Adventures novels, the Doctor demonstrates a mild form of this. Since all things are mostly empty space, supposedly, there's a probability two items will pass through each other. The Doctor spends several hours throwing a ball at the wall, and eventually "collapses the wave function" to make the ball finally go through the wall... just for the cheap thrill of hitting Fitz in the head with a ball through a wall. Oddly, he never tries this under plot-relevant circumstances. He also once teleported with math. Or something. He got teleported right back to his original location eventually, though.
In "The Parting of the Ways", Rose temporarily acquires this ability, at the ultimate cost of the Doctor losing another regeneration by absorbing the power's source, the "Time Vortex", from Rose. The implication is that if Rose held on to it for too long, it would kill her. The ensuing Deus ex Machinadoes make you wonder why the Doctor never used the trick before; presumably, the effects of swallowing the Time Vortex are too unpredictable to depend on it, plus the aforementioned cost of one's life. Also, he later references it, saying "No one's ever meant to have that power. If a Time Lord did that he'd become a god — a vengeful god.", so it's probable that he doesn't dare risk it. Especially after his time as the Time Lord Victorious.
There's also the Trickster, although his powers are rather limited; he would need to trick others into making a choice which would change reality. He'll often attack the Doctor's companions, such as Sarah Jane or Donna.
George in "Night Terrors", who makes his nightmares become real by believing in them so much.
In the Web-Animation Death comes to Time it is claimed Time Lords are this but hold back their power as using it damages the Universe. However this is mainly considered non-canon as when the Doctor uses the power to kill another Time Lord he kills himself.
The Star Trek universe also has a few, such as Q, the Organians, The Douwd, Trelane, Charlie X, and Wil Wheaton. A trip through the galactic barrier can give you such abilities and the power to pass them on, but With Great Power Comes Great Insanity...
Some novels also claim that the Galactic Barrier was either created or influenced by the Q (in one trilogy, it was created by the Q Continuum to keep a Big Bad out; in the book where Trelane was a Q, our "beloved" Q was nearly destroyed and spent millennia in the Barrier, causing anyone who passed to go insane and gain a portion of his power - he is what happened to Kirk's old pal Gary Mitchell in the second pilot of the original series).
"The Mind and the Matter". A man learns how to control reality by reading a book.
In an episode of Farscape Scorpius briefly becomes a virtual Reality Warper when Crichton tries to trap him in a VR game (It Seemed Like a Good Idea at the Time), dissolving a character into a tangle of equations and transforming Crichton's pulse pistol into a banana.
A more concrete example would be found in the form of Einstein, the representative of the True Ancients: in his first episode alone, he opened a wormhole at will, created a dimension for Crichton's temporary use, and "wrapped time around his little finger."
Maldis, the villain of "That Old Black Magic" and "Picture If You Will," used a mixture of this and illusionism: sometimes crafting whole worlds for his minions to wander, sometimes taunting them with hallucinations and visions. And he even has A Wizard Did It quote to explain himself to Crichton:
Supernatural brought us the Trickster, a demi-god that likes to roam around, deflating egos, breaking the haughty, and causing mayhem in general. While not actively evil, the Trickster's sense of humor can, on occasion, be quite lethal. As of Season 5, it has been revealed that the Trickster is not a demi-god at all but is actually the Archangel Gabriel. He ran away from his family because he couldn't take all the fighting.
Some of the more powerful angels have reality warping powers. Zachariah is the biggest user but other angels, including a promoted Castiel demonstrated mild reality warping powers.
Jesse, the Anti Christ, made childish stories come true by merely believing them.
Apparently, this can also happen to powerful psychics. Fred Jones was a powerful psychic who grew senile and lost control of his powers, making cartoon physics come true.
Charmed has a character named Billie Jenkins who has the power of thought projection. She managed to bring plants to life, turn her parents into assassins, and time travel. Several other characters also had Reality Warping as part of their power sets, like Wyatt, the Avatars, and the Cleaners.
Wizards in Wizards of Waverly Place have an almost absurd ability to do this with almost no effort. A casual spell used by Alex early in the series allowed her to rewind time, and in the movie an equally unintended magical effect allowed her to rewrite the last 16 or so years of reality. The effect in the movie used a special magic wand. She's not normally capable of doing this. And many series with characters who don't normally have such powerful abilities can rewind time, because it feels like a small change—only when Fridge Logic takes effect do you realize how big it really is.
A tiny handful of telepaths can do this. A fraction of telepaths have telekinetic ability, and the Psi Corps conducted experiments on them to increase said ability. The Psi Corps are amateurs next to the Vorlons, though, who probably planted telepathic traits in the human gene pool in the first place. They "changed" Lyta Alexander, who started as a registered telepath of modest ability, to make her into a psychic doomsday weapon. When Garibaldi warned her that they shouldn't discuss her abilities in front of a security camera, she casually asked "what camera?" and willed it out of existence.
There was also Jason Ironheart, the mostly-successful attempt at creating a super-telekinetic. Unfortunately, his powers quickly got out of control as they kept exponentially increasing, eventually turning him into an Energy Being. He killed the scientist who created him in order to ensure the process couldn't be repeated.
The techno-mages appear to have this ability, but it is, in fact, highly advanced technology created by the Shadows mixed with illusion and theatrics.
In LOST, Jacob is seemingly an example of this, though his powers do apparently have certain limitations. He can grant immortality, heal people, and prevent people from being able to kill themselves, all just by touching them. He can also see into peoples' lives and draw them to the Island at will. And his powers seem to remain active even after his own death. He can't bring people back from the dead, though. And he prefers not to interfere too much with people in the first place. After bringing them to the Island, he takes a hands-off approach instead of helping them.
In the novelization of the 1998 Merlin series, it is explained that fairy magic relies on illusion, and humans cannot use such magic. However, Half Human Hybrids can combine fairy illusion with human feeling, causing the illusions to come to life in reality, giving them this power.
In an episode of The Secret World of Alex Mack, Alex temporarily gets the uncontrollable power to make her daydreams reality, leading to several awkward situations where she's nearly caught by Vince and Dave.
Art Kanji-Daemon of My Little Town.
In Misfits, Nathan eventually buys the power reality warping from Seth. Because he only uses it to create or alter small objects, it's either a very limited case or Nathan simply hasn't realized its potential- which isn't entirely out of character for him.
Peter also has the ability to control future events by drawing them.
In the V-World in Caprica, the Virtual Ghosts (Zoe and Tamara) can alter the entire environment at will if they concentrate their power. At one point they turn all of New Cap City into a mountain kingdom.
The eponymous Elysium formula of The Elysium Project is a Super Serum that grants those exposed to it the power to manipulate reality in accordance with their desires.
Destroy The Godmodder has had lots of these. The godmodder himself, the Glitch, the poster's themselves, all are reality warpers.
And with the release of the supplement "Imperial Mysteries", archmasters can now officially retroactively change reality. Looks like those elder vampires may not be senile after all, they just remember the way the world used to work before the archmasters changed it.
In the Fan-made line Genius The Transgression you have the Unmada, geniuses who believe their own theories are really how the world works and that everybody else in crazy or deluded. When they stay in one play for too long, their Mania starts warping the world around them to reflect their beliefs.
Like its successor, Mage: The Ascension gives its character the ability to bend reality, but they're usually kept in check by Paradox. The Marauders, however, are not; due to the circumstances of their Awakening, they have the ability to flout Paradox, making it hit other mages instead of themselves. On the other hand, they get Quiet, which reflects just how much reality disagrees with them; if it hits a certain point, they're exiled from this world and free to run merry in realms of their own madness.
Exagerrated with the Technocracy, who were originally responsible for there being a reality to warp.
While the magic in Dungeons & Dragons is typically much more functional, spellcasters can pull this off with the Limited Wish and Wish spells (though the precise limits of these depend on the exact edition, and the latest doesn't seem to have any such magic just yet).
More to the point, the Wizard/Sorcerer spell Genesis allows the caster to create his own demiplane with any environment that reflects "most any desire the spellcaster can visualize."
Also quite literal when visiting the otherworldly plane of Limbo in D&D, which is a chaotic stew of all elements, energies, and other exotic substances usually lumped together under the designation "Chaosstuff" (really). With an effort of will, a character can force the Chaosstuff into orderly form, but not for long; only the anarchs, innate Limbo-shapers of the githzerai species, can do it unconsciously - even while they sleep.
There is also the clerical Miracle spell in third edition, but that's arguably more a request for divine intervention in a form desired by the caster right now than an actual reality warp.
Miracle is roughly the divine equivalent of the arcane Wish spell. The effect is the same, it just has a different name and different logic behind it.
Psionics are a textbook example of this trope, as it all boils down to thinking about something, and then making that happen with your mind.
This is why residents of Vechor in the Ravenloft setting are glad their darklord-king, Easan the Mad, is usually too busy with his deranged experiments to notice them. If he does, he may decide they would be happier with, say, three extra arms or a river of grape-flavored wallpaper paste flowing through their backyard.
The Nobles of Nobilis. The game is about playing as one of them.
High-level psykers in Warhammer 40,000, known as 'apex-levels', have the ability to change physical reality by thought alone. Unfortunately, human minds were not designed to handle so much exposure to the Warp and these individuals are inevitably driven insane the moment they awaken to their powers, with catastrophic results.
Ursarkar Creed, with the ability to deploy anything that isn't cavalry (that includes skyscraper-sized Titans, mind), is jokingly alleged to be this by the community.
The ultimate goal of all Chaos followers is to ascend and become an immortal Daemon Prince with absolute mastery of the Warp. They spend most of their time ruling Daemon Worlds, planets where physics is a fun joke you tell your friends and the only law is the will of their masters.
Orks, if only to a very limited extent. Orks possess a gestalt psychic field, very much similar to the aforementioned human psykers. If there is a large number of Orks in close proximity (and they usually are) and believe something should happen, it will happen. For example, the majority of regular Orks, Ork Mekboyz and the Kult of Speed believe that "da red onez go fasta!" and indeed if a vehicle is painted red, it will go faster. Orks have also been known to use weapons and technology that just shouldn't be able to function, like ships that work without fuel and guns that fire despite having no firing mechanisms.
Let's hope the Tyranids never assimilate this ability from the Orks. If a few hundred Boyz can warp reality, what sort of power would a hive mind possessed of multiple billions of creatures possess?
GURPS also has a variety of reality warping spells, including (in ascending order of power): Lesser Wish, Wish, and Great Wish. They're all ridiculously expensive to cast, especially Great Wish (duh), thus you can only create one by hard work over a long period of time. (But if you find an item with a Wish enchantment already on it, you can activate the spell with ease.)
Planeswalkers in Magic: The Gathering used to make ample use of this skill before The Mending, which really only dampened their ability. Especially Teferi, who funneled magic from an incoming inter-planar attack to phase his entire homeland out of existence for centuries.
Although Ixidor was not a planeswalker, he possessed the unique ability to sculpt reality. He used this to create a small kingdom in the desert and transformed his own arm into Akroma, the Angel of Wrath.
Ixidor wasn't always a Reality Warper. He used to be an illusionist. Then his illusions became real.
The "Language" Madness Talent from Don't Lose Your Mind, a supplement for Dont Rest Your Head, lets one of the Awake alter reality by speaking the secret language God used to create the universe. If they become a Nightmare, they're at risk of becoming the Omnipotent Third Person, a mindless, disembodied narrator who corrupts and twists reality by describing it.
Several other Madness Talents provided in that book are narrower Reality Warper abilities — "Teddy" in particular lets you harm or destroy things by harming a teddy bear you possess — and since the player is free to come up with their own Madness Talents, they can make their own that are also Reality Warper abilities.
The game actively encourages this; in Don't Lose Your Mind it's stated that any good madness power deployed at full power is going to be functional omnipotence, omniscience, or both. And that this is entirely intentional and completely expected; swinging six madness dice is you telling reality to sit down and shut up, and your madness power determines the fine details of how you go about it.
This is partly due to the fact that Madness Talents work on dream logic — someone with Super Strength is strong enough to lift a car, smash steel, or bend metal bars if they put enough dice into it, sure... but they're also likely strong enough to lift someone's spirits, smash corruption, and bend the truth.
Numerous beings in Exalted are capable of some degree of this (especially Raksha and Primordials). However, the Solar Exalted are by far the most capable. Not only are their Lore Charms able to impose order and structure on the Wyld to create beings, objects or places, but at higher levels they can access a Charm that allows them to fundamentally alter the universal principles that apply to the things that they create. Through an extremely difficult mechanism called a "Miracle Shell", they are capable of applying such alterations to Creation itself, allowing them to redefine or add anything to it.
In Mutants & Masterminds, the power of choice for Reality Warpers would be Animate Object - which can be used to bend the air to your will. Combined with Create Object and Transform, you can very nearly manipulate every aspect of your environment with a thought.
In Toon: The Cartoon RPG, characters can take the power of Cosmic Shift, which allows them to warp reality on a minor scale to achieve any of three purposes (or because the Animatorthinks it would be funny):
In Grimm, any character with Imagination as their iconic core trait becomes one in the Grimm Lands, able to manipulate the imagination-stuff made real of the Grimm Lands through sheer force of will and creativity. Dreamers, however, are better at it than anyone, having a higher starting Imagination and getting it as a free iconic core trait in addition to their normal one. They can even put their normal iconic core trait into Imagination as well, making them even more potent — when spending Imagination to alter the Grimm lands, each single point spent counts as two.
In Eclipse Phase, characters with the psi-chi or psi-gamma traits have minor psychic abilities, conferred by infection with the (apparently) benign Watts-MacLeod strain of the exsurgent virus. Exsurgents, transhumans who have been completely taken over by the less benign strains of the virus, possess the much more powerful psi-epsilon sleights, such as telekinesis, thermokinesis, the ability to transmute matter, shut down electrical flow in their near vicinity, control electromagnetic fields around them, and generally tell the laws of physics to shut up and sit down.
Some fans have a theory that this was Sparda's main power and Dante, being his son, channels it on a limited degree leading to why Rule of Cool ALWAYS works for him.
Elizabeth is able, from the beginning, to open "Tears", portals, into other timelines and dimensions. By the end of the game, she becomes even more powerful and essentially the omnipotent being of that universe.
The Lutece twins are also Reality Warpers, since they can teleport to any timeline or dimension they want to, being able to undo bad things that happened in the past, or prevent them from happening in the future, like Elizabeth. In addition to those powers, they are also essentially immortal and can't be damaged, being frozen in time and reality. That makes them incredibly powerful.
Devil Survivor 2: Polaris is the Administrator of the Universe, and he has decided to bring the cosmic Ban Hammer down on our planet because we haven't taken the evolutionary route he desires. How does this come about? He wills the planet to vanish, and it does. It just... disappears into nothingness. The Dragon Stream can cancel it, however.
Amaterasu, the protagonist of Ōkami, has the power to alter reality with her Celestial Brush. She can use it to slice things in half, fix broken bridges (unfortunately, she still has to deal with that kind), bloom trees, climb walls, light things on fire, cause windstorms, and various other nifty things once she finds out how. And did we mention that she's not only a god, but a Wolf? Chibiterasu, the protagonist of Ōkamiden, also has these powers, although he is purported to be less powerful than Ammy due to being a "new existence."
Yukari Yakumo, of the Touhou series, has complete power over boundaries. Not walls or fences, the boundaries between Dreams and Reality, Life and Death, Truth and Lies, or anything consisting of two opposites. This power goes to comical levels; she can never truly die, as she can simply manipulate the border of Life and Death and be alive again (she also did this to another person), and she once created a portal to the moon by looking into the moon's reflection in a lake, and manipulating the border between truth and lies. She's never been truly beaten in any of the games (this is a series where everyone is a Game Breaker), and instead leads the protagonists on behind the scenes.
Reimu Hakurei also somewhat counts in that her Last Word "Fantasy Heaven", the most powerful Spellcard in her arsenal, allows her to simply "float away from reality", making any attempt to attack her futile. Thankfully, because battles are largely regarded as games in Gensoukyou, she has a self-imposed time limit to this spell (around a minute). Doesn't really help much considering that this spellcard is considered by some to be the second, if not THE toughest one to beat in the game. According to Word of God, however, if she were to ever use this spell without the time limit, it would be impossible to defeat no matter what the method.
This doesn't say much in a world where people can move at appreciable fractions of the speed of light, invite mortal souls to death, remove a boundary that keeps the place existing, manipulate fate, or just flat out destroy anything, however. If the characters ever really tried to kill each other, whoever went first would win instantly.
Other characters, though due to either less power or experience are nowhere near the levels of the above two, possess aspects of this trope as well. Shinki (the Goddess of Demons) created the entirety of Makai and its inhabitants, although her rule is not absolute. Remilia Scarlet can manipulate Fate, which has some interesting implications, however either she never uses it or it is an unconscious ability. Keine Kamishirasawa can "eat" and hide history, as well as create brand new history in her hakutaku form, however her mastery of it is tenuous at best, and stronger or more perceptive characters can see right through it (for example, in the Border Team scenario of Imperishable Night, while she could successfully hide the Human Village from Reimu, Yukari could see the village and its inhabitants with no problem). Sanae Kochiya possesses the power to create miracles, but each miracle has a casting time, and the truly impressive ones would require days of continuous casting to perform.
The villain Entropy in Freedom Force warps reality by merely existing. Since her continued existence would eventually destroy the universe, the heroes had to take her down.
Alma from the F.E.A.R. series has Psychic Powers that rise to this level. So far, in the Canon, she's shown the ability to exist past her physical death, shred people to bloody skeletons, and conjure "ghosts" out of nothing just by thinking about it. It's hinted that these are fairly low on the spectrum of her abilities, although we have yet to see more of what she can do outside of the non-canonical expansions.
If you do include those expansions, though, her powers include, at the very least, the ability to bring the dead back to life — in a setting that doesn't operate under Death Is Cheap — wipe a city clean of inhabitants without a trace, spontaneously disintegrate objects, and generally just bend reality to her slightest whim.
We've now gotten to see more of what she can do canonically in Project Origin, and it's not much less impressive. At the very least, she can create real ghosts now — coalescing the psychic remnants of the dead into very angry, invincible creatures bent on the destruction of the living — and turn people into mindless slaves with the psychic ability to reanimate corpses and use them like puppets.
And its implied she can do far, far worse if she wasn't distracted by Becket. Snake Fist himself calls her the "mother of the apocalypse" and is convinced that if Becket can't contain Alma, "everybody dies."
A pretty blatant example of reality warping in action takes place in Wade Elementary, when Alma separates Becket from Stokes. Stokes and Becket move into a room together, they get hit by a hallucination, and WHAM! Becket is in a completely different room on the opposite side of the school, and there's no door where Stokes was standing. Which makes you start wondering just how many doors you actually pass through that lead where they're supposed to go....
The third game confirms that Alma is warping reality, and its not even a conscious choice on her part. The developers even refer to it as the "Almaverse" and it features horrific monsters and living humans who are horribly twisted by Alma's psychic powers.
The JRPG My World My Way has something of a Reality Warper as the main character - a spoiled-rotten princess who becomes an adventurer, and can "pout" to change things (including locations, monsters, etc.) to her liking.
In Eversion, you have the power to change the world around you at certain points in stages. This seems like an interesting power. And later you warp the Sugar Bowl into a Sugar Apocalypse.
The first few Myst games revolve the concept of Rewriting Reality. Uru and Myst V brought this one step further by introducing the Bahro, an enslaved species with the power to warp reality among other untold abilities (ex.: Linking from one Age to another without the use of Linking Books, controlling the weather, and accelerating time). It's possible that Yeesha might be able to do this as well.
The Virage Embryo in The Legend of Dragoon has this power: even when technically still dormant it warps the interior of the Moon That Never Sets into a series of elaborate constructs based on the memories of the main characters. During the final boss battle, with half of its power awakened, it takes on no less than four different forms while also transforming the arena into a moving recreation of the birth of the universe. At full power it would have destroyed the world and remade it in it's own twisted image.
Arguably Viki, from the Suikoden series. While her teleportation rune explains why she can send people to different places, and her general ditziness means this happens by accident or is done wrongly on occasion, it does not explain why she has the ability to travel through time, entirely by accident, usually after sneezing. In Suikoden III you can actually have two copies of her in your party because of this.
You, the player, in Scribblenauts. Anything you spell out in the text box appears in an instant, from a fly to a dragon, Death, God, a black hole and so on.
Sammun-Mak in Sam and Max: The Devil's Playhouse, who rewrites the history of the world to put himself in charge and make everyone love him. And possibly Max depending on whether you believe Papierwaite's or Sam's explanation as to why Max's insides look like a trendy 70s house - Papierwaite says it's this trope, Sam claims Max's insides have always looked like that.
Xigbar from Kingdom Hearts II is given control over the power of "Space". During his boss fight he frequently teleports, changes the layout of the stage, and redirects the projectiles fired from his "arrowguns" at the player. He also seems to use his spacial manipulation to adhere himself to an non-existent surface, giving him the appearance of walking on an invisible ceiling.
In Final Fantasy Crystal Chronicles: Ring of Fates it's revealed that this is the principle on which all magic works. One cannot create a fire, but instead swap out the present universe for one that it is identical in all ways except the target being on fire. The number of possible universes are unbelievably vast, but still finite. The Starsingers on the other hand can choose from any universe at will, allow them to make changes far greater then normal magic users. In the end Yuri and Chelinka surpass even this, becoming true reality warpers capable of creating their own world from scratch.
The Black Jewel from Wario World. The first thing it does upon being freed is destroy Wario's castle and create its own realm in it's place.
In Alan Wake, any artist who creates works in and around Cauldron Lake can potentially do this. This includes Alan Wake himself, Thomas Zane, and it is implied that the Anderson brothers were capable of it as well.
It turns out that the Von Braun's FTL drive in System Shock 2 works this way. This is also how SHODAN plans to remake the world according to her specifications.
Dragons, Dovahkiin, and, to a lesser extent, those trained in the Thu'um are this in The Elder Scrolls V: Skyrim. The dragon tongue is such that a Shout can produce fire or ice, summon storms, and slow time merely by speaking the effects into existence.
And in the general The Elder Scrolls universe, the giant Dwemer robot the Numidium was so powerful it did this just by existing. It's activation in Daggerfall ended up creating "The Warp In the West", which not only altered the entire region, but also caused multiple versions of history to all occur simultaneously. In fact, the events of Daggerfall broke Nirn's fragile reality so thoroughly that the god of time himself had to step in and do a reality-warping patch job of his own. Everygamesince has had texts theorising that Akatosh is Not Amused by this turn of events.
And it just happens to be that the incident that wiped the aforementioned Dwemer off the face of Nirn was a similar attempt to make a similar, if more godlike, golem, complete with the exact same power source, the disembodied heart of the dead god Lorkhan. Considering what kind of godLorkhan was, it seems almost fitting. Time will tell if mortals will finally stop messing around with the damn thing one day, but until then, it seems it'll remain a thorn on the Nine's collective side.
Vivec's writings imply that CHIM is the literal art of Breaking the Fourth Wall and using the game's console commands to edit reality.
Mario & Luigi: Dream Team: The Final Boss gains this power by absorbing the power of the Dream Stone. Bowser then grows twice his size, glowing like he grabbed a Starman. He creates minions from nothing, summons meat from nothing to heal himself, and even creates gunships to attack you.
Skullgirls has a rather odd example in Peacock. During gameplay, all of the playable characters operate under a degree of cartoon physics (this being a 2D animated fighting game, it's excusable). But in the game's actual story setting, physics function as normal—Peacock is the only exception. Interestingly, this is explicitly defined as a power of hers; she's managed to essentially weaponizecartoon physics, which is what makes her such a terrifying force. Peacock is able to conjure all manner of outlandish objects and weapons out of thin air, teleport via portable hole, and summon her imaginary friends into reality to help her fight, among other things.
Really powerful beings in the Nasuverse sometimes have access to powers called Marble Phantasm and Reality Marbles. The former lets the user control probability so that anything with a chance of occurring naturally will happen, while the later supplants reality with the user's own vision of the world. They are named after an analogy about a jar of marbles containing one hundred marbles, with only one being white. Marble Phantasms manipulate probability so the white marble will always be picked while Reality Marbles turn all the marbles white.
In addition to the Reality Marbles detailed above, Fate/stay night offers a limited version in Lancer's spear, Gae Bolg, which reverses causality to ensure a fatal blow. The spear strikes a fatal blow, and then reality is rearranged to fit that—which can result in a few oddities, such as the spear haft seemingly making a sharp turn to dodge a block. Surviving a blow from Gae Bolg requires either an obscene amount of luck or flat-out divine intervention. Most Servants have one or both of those, so it's not quite the Gamebreaker it would normally be.
Fake Assassin also possesses a reality-warping attack, Tsubame Gaeshi. The attack manipulates alternate universes to allow Assassin to simultaneously attack his target from three different directions. Interestingly, this is neither magical or divine but simply the result of endlessly training and refining his swordsmanship.
All witches in Umineko: When They Cry have powers that come down to this. The Endless Magic that Beatrice, Eva-Beatrice, Ange, and Maria use is defined as this. In addition, thanks to the Schrödinger's Cat that the entire island of Rokkenjima has been turned into, the red, blue, and gold truths work this role, especially the blue truth.
Featherine takes it even further. When fighting Lambdadelta (A reality warper in her own right.) she more-or-less decrees that the fight was over and Lambdadelta was dead. And thus, the fight ended.
In Chaos;Head, every single major character is a Reality Warper, except they call it "Real-booting" and it can manifest in different ways. Takumi is implied to be the only person who can do it on a large scale.
In Little Busters!, Kyousuke has total control over the world that he created. Since he's trying to pretend to Riki and Rin that this is the real world, he mostly only uses the powers for little things, but the effect of his influence is still apparent enough that at certain points Riki begins to seriously wonder exactly how powerful he is.
Crazy Ghosts has Ghost, however in a twist he doesn't know that he has the power to alter reality so this ability is played more in line with Rule of Funny
In Books Don't Work HereThe Author created the world and can change it at will. He has been seen to *poof* things into existence when he forgot to create them earlier. Interestingly enough the main character Robin has also learned to take advantage of the world’s malleable nature: changing character's names, pulling objects out of nowhere, and creating characters herself, though much of her control over the comic comes from bullying the narrator.
Project 0 has most of the main heroes capable of this through the power of Modding
minus., a little girl with a very powerful imagination, is close to the 'ridiculously overpowered' end of the scale and definitely hits "really scaring in how she uses her powers sometimes". The comic is frightening because she has the thought patterns of a typical kid, and is surrounded by people who don't know that omnipotent ≠ the wisdom to use it responsibly. Sometimes she does realize how her actions hurt others and fixes then like when she accidentally killed a woman with a magic act and brought her back. However, plenty of other times she ends up ending/drastically altering the lives of people she crosses without thinking of it, like a man that yelled at her for popping his balloon whom she turned into a balloon and popped. She's also very open to the suggestions of others, and the strip actually ends when she takes a suggestion to bring back every living thing ever back to life, which wipes out all life on Earth due to the lack of space.
This is softened by the slightly bizarre place the series is in the Sliding Scale of Idealism Versus Cynicism. The most important thing is that while death isn't cheap, all it does is turn you into a ghost, which just means you have a spectral tail instead of a legs and can fly. The aforementioned apocalypse isn't even that tragic, as everyone's continuing life as usual. The last half-dozen strips even include the regular kind of oddness back when everyone was alive.
After the comic ended, the author showed a series of gag/April Fools strips featuring an "evil Minus" who had the same power but was fearfully vindictive. The first example was possibly the most disturbing, where after a friend of hers accidentally steps on and ruins her sidewalk chalk painting (and apologizes when it's brought to her attention), Minus turns the friend into a chalk drawing and rubs out her face, complete with chalk blood. * Shudder*
It's not overtly treated as an example of this trope, but in 8-Bit Theater Red Mage has been shown to alter reality by changing his character sheet. One time, he survived a fall from a great height by "forgetting" to record the damage he was supposed to have taken, and another time he survived having his skeleton removed because he judged it to be "wholly vestigial". On the sidelines, Black Belt once got himself so lost that he warped the fabric of space and accidentally created a clone of himself, while Thief stole his class change from the future.
Sarda the Sage a.k.a. The Wizard Who Did It, however, is a classic case of this trope. At one point he rewrote a character's speech bubbles, forcing him to agree with him. Why? Because he could. Also, there was never a fifth Light Warrior named "Bard"...
Smitty has a variation on this where he is able to warp reality, but only in ways that minimize entropy; as Parley puts it, his power is to "make everything boring." Throw a deck of cards, and he'll make them land in a perfect stack, arranged by suit and number. Try to play a video game with him, and the final prize will appear at his feet. And if you need something to land in a certain place, let him throw it and it will crash into a bird that appears out of nowhere, then fall onto the correct spot. He seems to have no idea how he does any of this.
And then Jade herself, after merging with her dreamself and Bec-prototyped sprite, and PM, after prototyping herself with WQ's ring.
Becquerel is actually a type of being known as a First Guardian, all of whom have the same abilities as him. Other First Guardians include Doc Scratch and GCat, with Scratch also being The Omniscient. And then there's Eldritch Abomination Lord English, who seemingly has First Guardian powers andTime Travel, potentially making him the most powerful character in the comic.
Also, the Sburb game beta itself: Normal video games don't alter the player's house nor make strange machines appear. Or create entire new universes.
Roxy as the Rogue of Void can steal the concept of nothingness itself from an object, meaning she can conjure it out of thin air if she understands it well enough. Roxy is pretty shocked when she finds out how powerful she really is.
Dan Shive of El Goonish Shive portrays himself as being able to alter the size, hair color, appearance, gender, and species of any of the characters that annoy him in a few of the sketchbook comics. On occasion, anyway.
Not actually this trope, but the above question is hilariously explored at the end of Robert Sheckley's classic novel Mindswap.
Crusader in Jayden And Crusader is the artist of the webcomic and, from time to time, he will use his powers to raise the dead, punish the wicked and generally save the world.
A major part of A Beginner's Guide to the End of the Universe is that, since the beginning, the protagonist is able to spend CREATIVITY points (gained usually from killing enemies) to create any object (or creature) he wants, but also change objects, combine them together or imbue them with specific abilities. The more complicated an object is, the more CREATIVITY it costs though. Much later on, a fluid generated by the Stone Icosahedron grants the same abilities to anyone who drinks it. By the end of the comic, the protagonist unlocks his full powers, thus gaining infinite CREATIVITY, allowing him to pull off truly spectacular stunts such as creating a gas giant solely to have its gravitational well divert a projectile off its course.
Uni-Man, or anyone with a unicorn horn, even a severed one just held to their forehead, can wish for almost anything to happen. (You can wish for an entire planet but not to be someone else, for example.)
Abraham Lincoln has a copy of all of God's powers. He uses them to put a bomb inside all bad guys and to make a TV set so that Axe Cop can watch them explode.
In "The Dogs", Axe Cop buys a magic pencil things drawn with which become real.
Homsar is such a Cloudcuckoolander that he defies the laws of physics, floating, shapeshifting, and distorting the scenery.
Senor Cardgage completed his transformation into a second Homsar in hremail3184, in which he manages to walk in place as if the carpet had no friction and make ambient city sounds appear out of nowhere. Strong Bad put it best: "I'm ... quite scared right now."
AAAAAAAND The Paper might also qualify, subverting the laws of perspective.
Oh, and that seminar of Clef's in the page quote? His advice for surviving an encounter with such an individual is to invoke Boom, Headshot, or another certain insta-kill, before he or she has any idea that you're there.
In Freedom City Play By Post, Claremont Academy Mark 'Edge' Lucas is a powerful Reality Warper who's done things like cover the entire city in a helium balloon and blow up city blocks full of enemies. It's for the best that he was raised by a superhero, and naturally Genre Savvy.
In the Whateley Universe, there are plenty of examples. None of them are near the A God Am I levels. Mages of varying power levels can alter bits of reality. Some devisers can build devises that can do it. And then there's a class of mutant powers known as Warper: some warpers can affect space or time or dimension, but none seem to be able to warp reality like a powerful wizard.
One example is Fractious, who can generate fractures and splits in reality. Normally, she can cut a weapon in half. When she gets upset, she can slice a car in half, or slice the facing off a building.
Devisors, debateably. If they can come up with a reason why something should work, it will, regardless of the actual physics involved.
During Spoony and Linkara's two part Adamantium Rage/Warrior # 1 review, Dr. Insano uses Warrior to screw up reality, causing it to reformat every five seconds. Everytime it cuts back to Linkara and Spoony, the scene changes; one minute, they've switched characters, then another, Dr. Insano is reviewing the comic while Linkara has a gun pointed at his head, then another, neither of them can act, and on multiple occasions, different That Guy with the Glasses contributors are playing either Linkara or Insano. The best one is the universe that features Linkara and Insano as stuffed animals.
In the Awesomeverse more generally there is The Plot Hole a phenomenally powerful Negative Space Wedgie which is the cause of all the plot holes and inconsistencies in their reality was a pure force of nature …until Ma-Ti merged with it and used it's power as vengeance against The Nostalgia Critic. Eventually Ma-Ti was convinced to give up his vengeance quest and leave, but this destabilized it until the Critic willingly merged with it.
In the Paradise setting, a mysterious force is transforming humans into Funny Animals (and occasionally switching their gender as well). It turns out that The Virus responsible for the Change is not a biological virus, but rather a computer virus altering reality in a simulation running on a post-Singularity computronium computer.
In the Global Guardians PBEM Universe there is Quantum, a who can manipulate matter and energy on the quantum level. There is also Dagon, a sorcerer-cum-Eldritch Abomination who likes to change any area he's in to match H.P. Lovecraft's darkest nightmares.
It's sometimes implied that one or both of the main characters in Chicken And Moose has this ability.
In Cyriak's online animated video "Boogie Math", the little boy warps reality with his dancing. Through his dancing, he distorts his body, ejects demonic clones of himself from his mouth, and eventually melts himself and his surroundings.
As a general rule, any animated show that makes liberal use of Cartoon Physics for comedic effect will probably have several or more characters who would qualify as Reality Warpers by the definition of the trope.
Gaia, from Captain Planet and the Planeteers, will bend reality through time manipulation to solve a problem or to teach characters a lesson. One example is during the episode "If its Doomsday, It Must be Belfast", she fast forwards time 10 years to show the affects of the nuclear fallout to people in three different conflict zones if they set the nukes off after Verminous Skumm gives them the triggers, saying that they will destroy the other side. She then rewinds back time and with their lessons learned, help the Planeteers foil Skumm's plans. Her Evil Counterpart Zarm also can display this power, usually requiring her intervention when the Planeteers face him.
In this show anyone (at least children) can bring an imaginary friend into being. Goo's the only kid we've met who runs the risk of doing it by accident. If you consider how it takes some imagination and focus to bring an imaginary friend to life (Terrence having to strain himself to create a red block with arms, though that's primarily just because it's Terrence), being able to bring dozens to life in detail within a few seconds makes Goo even more impressive.
Creating an army of them with diverse body types, powers, and personalities...while asleep.
The surprisingly psychological "Foster's Home" made for TV movie "Destination Imagination" gave us a glimpse of what happens when you cause a nigh-omnipotent-within-his-realm character to suffer from serious abandonment issues...
Fairies have the ability to warp the world around them in response to the wishes of their charge.
As has the magical birthday cake.
But even fairies are bound by "Da Rules". The Magic Fairy-versary Muffin, granted to any child who lasts one year without revealing the existence of his or her fairy godparents, grants one (almost) rule-free wish per bite of muffin, on one condition: You can't wish for a better-tasting muffin. It tastes horrible. Deal with it.
There's also genie magic which is every bit as powerful as fairy magic, but without any rules whatsoever. The only trouble is Norm, the only genie to ever appear, is a real jackass who absolutely revels in screwing over whoever he grants a wish for. He's voiced by Norm MacDonald, so what do you expect?
The Heckle and Jeckle cartoon "The Power of Thought" deconstructs this trope, as it applies to cartoons, for all it's worth. One of the two Magpies, realizing that they are cartoon characters, causes anything he wants to happen just by thinking of it, and uses the power to bedevil a cop. The cop finally gets the two in jail by "doing some thinking of my own."
Slightly more over the top is when Raven turns Titans Towers into a horror movie as a subconscious manifestation of her own fear. She never uses it again, but she certainly seems to have shade of it. In general, it would be a great deal easier for the heroes if Raven could voluntarily do any of the things that can happen when her emotions and thus her powers run wild.
The Simpsons episode "Treehouse of Horror II" featured a parody of Twilight Zone's "It's A Good Life", titled "It's a Bart Life". Bart is all-powerful and everyone must bend to his every whim or suffer a Fate Worse than Death. The USA is actually "Bonerland" due to his history exam (although that's more out of fear of reprisal than actually altering history.) Homer gets a nice monologue when he tries to KO Bart with a chair and remembers Bart is also a mind reader.
Popeye is one of the biggest reality warpers of all time, and he does so by punching things. He's punched bulls into freshly cut steaks (with a sign and stand), people into baloney, Indians into nickels, etc, and ripped through the very film he was on, the animators having to stop the cartoon so they could fix it.
Apart from Toon Physics, how else can the Coyote's plans so frequently backfire in such mind-bending ways? At one point the road runner defeats the Coyote by defying the law of gravity, which he explains by holding up a sign that says "Roadrunners don't study law!"
Orson of U.S. Acres/Orson's Farm. He does need to be deliberately using his imagination, and a book helps, though. Either way, if it doesn't merely shut him off to the rest of the world, it superimposes his imagination on a fairly large acreage around him. Those affected need not have known he was reading; they can deduce it from the drastic changes in their surroundings. Reading a book about the ocean? Roy and Wade find themselves at the bottom. A coloring book? Whoops, now they're lineart. Reading "A Pictorial History of Trains", or even just the title? They get chased by a locomotive. But once he's done, it goes away. (If they were in the air, they might still have to fall back to the ground, though.)
Dwayne, a Static Shock Bang Baby, was able to turn water into cherry soda and create fictional characters with his mind.
Hexadecimal in ReBoot temporarily gains this power when she infects the system paint proram. She uses it to throw Mainframe into total chaos by disabling communications, melting all transport devices (including the bike Bob just bought), and changing the city's appearance beyond recognition. She even melts Glitch, shrinks Frisket, traps Enzo in a bunch of vidwindows, and cut+ pastes Phong Megabyte into Mainframes sky. Bob manages to fix all of this by getting Mike the TV to distract Hex while Bob finds the Undo Command on the system paint program.
Futurama has Bender at the end of "Obsoletely Fabulous" although it's more of him warping his perception of reality. Bender becomes a true reality warper during a later episode where he is overclocked by the Professor's son, Cubert.
He can also defy gravity, lift entire houses, blow up a house with nothing but the static electricity from rubbing his socks on carpet, clone himself to get an I-beam brought up to the top of the aforementioned elevator, jump at least a thousand feet up in the air, is invulnerable to pain, and can exist in cartoons. When you consider all this, it's little wonder that he almost destroyed reality itself in 2+2=Ed.
Edd:(with a look of disbelief on his face) Remind me to ask you how you did that, Ed.
This is mostly because the show operates with very prominent Cartoon Physics, Ed just happens to be the one who uses them the most and is also one of the people most involved in the physical side of the show's comedy.
It's never said, but occasionally hinted that some of Phineas and Ferb's gadgetry borders on this. Particularly the times when it's lampshaded that what they're trying to do is impossible, right before they go and do it anyway.
Star Trek: The Animated Series episode "The Magicks of Megas-Tu". They can bring anything into existence with but a thought. While they were on Earth they were considered to be witches and magicians due to their powers.
Belladonna from All Dogs Go to Heaven: The Series is a low level one. She was able to teleport most of the cast into a board game (which became a world of it's own) with just a snap of her fingers and this is probably how her Villain Song even makes sense at all (it involved dancing meat). However, it seems she can't directly effect someone's free will or won't.
Unicorn magic in general seems to have the potential to become this. Many unicorns don't appear to do much more than use their telekinesis plus a "theme" spell or two, but the variety of effects that the real wizards among them can spontaneously create with the right spells (which themselves seem more a collection of random effects than they'd follow any actual system or logic that we ever see) is quite dazzling. Alicorn magic is apparently immensely more powerful.
Twilight Sparkle has the range of effects but not the raw power of someone like Discord. She was the one who turned an animal into a fruit, and switched around the cutie marks. (In both cases it wasn't quite what she was going for.) Twilight's Game Breaker-if-she-had-better-control powers are explained as most unicorns having magic related to their special talent, whereas Twilight's special talent is magic itself, giving her an unlimited range of spells (though nowhere near the raw power of the princesses... yet.)
Inspiration Manifestation is a Spell Book that contains a spell allowing its owner to alter things to match their imagined version of it. Spike gives it to Rarity so she can use it to fix her puppet theater, which the puppeteer she built it for was disappointed in, but she quickly goes mad from the spell's power, planning to alter all of Equestria to match her idea of beauty (which basically means turning everything into a golden, gem-incrusted version of itself).
Roger of American Dad! is a bit of a subtle reality warper. Whenever he comes up with a backstory for one of his personas, logic bends to his will to make those backstories true. This includes being the birth mother of two fully grown men, and also being the teenage birth son of a human family, complete with pictures of him growing up! When Roger's alter egos are killed, they really are dead; but that doesn't mean Roger is. One of Roger's alter-egos has been seen handling another of Roger's alter egos' bodily remains.
Terrytoons' TV star Tom Terrific was able to change into anything, inanimate or otherwise, a situation called for. It was never entailed as to how he acquired this power unless it merely mirrored a child's yearn to be what he/she wanted.
Some early Pink Panther shorts had a bit of reality warping.
The band's music is capable of raising the dead, bulking up old ladies, breaking a cybernetic network, banishing an evil knight...and basically every unormal thing that occcurs in the series.
Trina (Corey's older biological sister) is a mild case, whenever she writes lyrics-worthy entries in her journal, her emotions manifest around her, and strange phenomenom happens depending on the emotion.
Trina and Nick also appear to exert power of bodily functions, while Trina and Mina Trina and Mina can resist sweating and drooling as "it's for farmers".
Nick Mallory is able to will away chicken pox as "Nick Mallory dosen't do spots", is able to keep smelling clean as he "Does not do stink", and he once used his coolness to 'literally cool' the flames that Trina's diary mode created, and he was also able to freeze Trina alive.
In "A Knight To Remember" Bonkerton Comet messes with reality when it appears every four years.
According to the intro video in the website it's shown that the "Wicked Cool Transition" can teleport characters.
In a lucid dream, a person that's dreaming is aware of being in a dream. This often has the side effect of giving the dreamer control over the dream world, making them a Reality Warper within the context of the dream. That is, as long as they can consciously keep themselves from waking up: upon realizing that what it sees isn't real, the mind subconsciously rejects it and tries to press the metaphorical reset button by waking up. That's right; one can become a Reality Warper with Willing Suspension of Disbelief alone!
Steve Jobs was widely reputed to have a lesser form of this, known as his "Reality Distortion Field." It didn't make the universe different, but made people around him tend to think it should be, and try to change the universe to conform.