[[Film/{{Superman}} http://tvtropes.org/pmwiki/pub/images/Cellophane_S.jpg]]
[[caption-width:434:This trope [[BroughtToYouByTheLetterS brought to you by the Cellophane S]]]]
-->"Couldn't you have done that earlier?"
-->— '''Tristan to Yvaine''', ''Stardust''

Some superhero comics authors seem to get bored of the same old powers. They add new ones to the same characters whenever they feel that a new power would open up a new story, or a new danger needs a new response, or what the hell, whenever they feel like it. It's bad enough writing in a new hero from nowhere just because you want to include a new power, but a lot of writers are worse than that. They tack new powers onto existing heroes.

Sometimes a {{retcon}}, a power upgrade or some bit of {{Phlebotinum}} is employed to explain the new power, but often the character just does something they've never done before and when their friends say, "I didn't know you could do that!", they come back with either "I've never needed to, till now," or worse, "Neither did I, till now!"

Not all {{New Super Power}}s fall into this category, just the ones resulting from an AssPull. A character who has only recently been empowered is fully [[JustifiedTrope justified]] in [[HowDoIShotWeb not knowing what he can do]].

Commonly used to bring a character BackFromTheDead.

Giving a character a GreenLanternRing avoids this. Compare MagicAIsMagicA, SoLastSeason and finally StrongAsTheyNeedToBe.
----
!!Examples

[[foldercontrol]]

[[folder:Anime]]
* ''{{Naruto}}''. It's to the point where Naruto fans have their own name for this trope, "Plot No Jutsu" ("plot technique"), although use of the term has drifted to meaning pretty much ''anything'' whoever didn't think made sense or want to happen.
** Part of the reason why half of the fanbase sees the Uchiha Clan (or at least Sasuke in particular) as [[SpotlightStealingSquad spotlight hogs]] is due to the fact that the Sharingan frequently turns out to grant some new abilities [[ComboPlatterPowers without any apparent connection to previous ones]] out of nowhere.
* ''JoJosBizarreAdventure'' has two especially egregious examples of this trope, each used to finish off the BigBad of a story arc. The first example occurs in Part 3: the villain Dio Brando is virtually unstoppable because his Stand [[spoiler: has the ability to stop time]], so how do the heroes stop him? [[spoiler: Jotaro Kujo's Stand suddenly gains the power to stop time, which also lets him move in Dio's time stop, despite the fact that its only powers so far were SuperStrength and SuperSpeed]]. Of course, this is explained [[spoiler: by saying that Jotaro's stand has always had a smaller version of Dio's time stop power, and what had been seen as a Super Speed attack (his trademark "''HORA HORA!''") was actually him stopping time and then punching repeatedly his foes' faces (Jotaro never realized himself what was really happening, because he managed to stop time just briefly, and so it all happened very quickly before time went back to its regular flowing).]] Part 5's was pretty bad though: [[spoiler: Giorno Giovanna stabs himself with a Stand Arrow, evolving his Gold Experience into Gold Experience Requiem, and giving it the power to nullify any action an opponent takes.]] To be fair, it ''was'' shown beforehand that the Arrow could give Stands new powers, but come on! That power is just ''ridiculous''!
** Oh, it happens to the villains too. Part 4 had [[spoiler: Kira getting the ability to reset time back to the time a kid woke up in the morning so that he could find out who got killed trying to figure out who Kira was because the kid was under the effect of Kira's just gotten the night before power.]] Part 6 had [[spoiler: the main villain of that getting the power to alter the universe's gravity, causing time to accelerate to the universe's end so that he could reset time to the way he wants it to be.]]
**Parts I and II only avoided this trope by making ripple powers a sort of GreenLanternRing.
*''OnePiece'' does this regularly, but [[RuleOfFun it generally doesn't jar]]. Except for Zoro's sudden ability to turn into a six-armed, three-headed ''Asura''? That one hasn't even received a [[ItRunsOnNonsensoleum humorously convincing yet utterly meaningless explanation.]]
** It's indicated that it's just an illusion created by his spirit, and none of the Straw Hats, including Zoro, are quite sure how it works.
** Luffy and his Gears are at least somewhat justified in-story. [[http://www.onemanga.com/One_Piece/387/18/ Luffy essentially claims]] that he thought them up between his defeat by Aokiji and the time of Gear Second's unveiling. Gear Second is just Luffy using his rubber body to adapt [=CP9s=] Soru technique into a continuous form. One could argue that Sanji likewise copied/adapted Wanze's flaming rollerskates into his own technique.
**Zoro's Asura had a little bit of foreshadowing. He managed to briefly use something similar when he was [[http://www.onemanga.com/One_Piece/387/07/ still fighting his way through Enies Lobby before the Tower of Justice.]] So really, Chopper's upgrade is the only one that came completely out of nowhere.
** No, it didn't. It was reasonable to assume that there would be some issue with the Rumble Ball. The two-minute limit at first seemed random, but when you're "distorting the wavelengths", you could easily assume messing with it any further could have it [[CameBackWrong go wrong.]]
*** Plus, before entering that form, he took a second rumble ball and started to lose control of his transformations because of it. So it was at least foreseeable that taking a third would have even worse consequences.
* ''[[YesPrecure5 Yes! Precure 5]]'''s Cure Aqua suddenly picked up the ability to turn her "Aqua Ribbon" baton into a sword. The reasoning behind this was that this allowed [[RuleOfCool an awesome swordfight]]. The sword returned during TheMovie for exactly the same reason.
* In ''MermaidMelodyPichiPichiPitch'', the characters are frequently granted new karaoke songs ([[MagicMusic the weapon of choice in the series]]) whenever the ones in the previous episode didn't work. This becomes somewhat ridiculous, considering these upgrades are manifested by the goddess the protagonists are attempting to summon, and [[spoiler:when they actually summon her, all she does is tell them to sing...]]
** Oh yeah, and that [[IntimateHealing amnesia kiss]]? Lucia gets that too. Randomly.
* DBZ - Piccolo's powers apparently go past vomiting energy and firing lasers from his fingertips to blow up the moon, include summoning child-sized versions of his own costume, summoning giant hourglasses, ''screaming a hole between dimensions''...
** Hey, that last one is Gotenks. Also, he IS the Devil/God.
*** Most importantly, though he fights like the rest of the ki-based cast, Piccolo-Daimaoh is actually a magic-based fighter. His technique names reflect this.
** Don't forget the original {{Dragonball}}, where he can stretch himself up into a fifty-story monster thingy, and even just stretch his limbs as far as the size of the screen will let him. The only other time he uses that ability is the Garlic Jr. filler arc.
***That doesn't really count, he used it in his first fight.
**Don't forget all the stuff with ki, such as sharpening and steering it.
* A blatant example in the third episode of ''MagicalGirlLyricalNanoha''. Other spells can be explained with Yuuno teaching her, a new trick she learned based on an old one as part of her TrainingFromHell, a part of her BiggerStick, or something she picked up during [[TimeSkip ten years of experience]], but where did she learn [[EmpathicWeapon Raising Heart's]] [[WaveMotionGun Shooting Mode]] and Area Search? The writers rallied themselves though. The former quickly became [[SmallGirlBigGun Nanoha's main offense]] while the latter made a reappearance as a ChekhovsSkill [[CrowningMomentOfAwesome for a truly awesome moment]].
* Happens occasionally in SailorMoon. Generally when a new batch of enemies appear the Sailors tend to get a power-up.
* [[{{Bleach}} Ichigo's]] recent transformation seems to fall into this category - it certainly brings him back from the brink of death.
**Although it has been hinted that he's becoming more of a hollow as he stays in Hueco Mundo, and wasn't entirley unexpected, it's debatable whether this is an AssPull or a poorly executed ChekhovsGun. Like the {{Naruto}} fandom, Bleach fans called this 'Plotkai'
*** Plotkai is the name of Kubo's Zanpakuto. Its release command is "troll".
** Bleach also has an extremely blatant example in Yammy. Being the tenth Espada, he wouldn't stand a chance against any of the good guys, who have already beaten [[spoiler:numbers 4-9.]] However, [[spoiler:he releases his zanpakuto and reveals that in his released state that he is the zeroth Espada, the strongest of all arrancar, conveniently making him far more powerful than the combined forces of Chad, Rukia, and Renji just as they were about to face him.]]
* ''SoulEater'' has quite a few of these, both in manga and the anime -- most blatantly [[spoiler:in the last four episodes of the anime, where Black Star, Kid and Maka suddenly aquired DeusExMachina-like superpowers in that order after being beat to the floor by the villains.]]
* Many creatures in the ''{{Pokemon}}'' anime would learn new attacks when the plot required it or evolved at just the right time.
* In [[{{Tsubasa}} Tsubasa: Reservoir Chronicle]], this is effectively the main purpose of Mokona's 108 Secret Abilities power.
* [[MajinTanteiNougamiNeuro Neuro's]] 666 tools of the Demon World and 7 Tools of the Demon Emperor. That's 673 different powers he can pull out of thin air whenever he needs to.
* Kogarashi from ''KamenNoMaidGuy'' has a ''large'' [[ComboPlatterPowers platter of various powers]], many of whom only show up once to advance the plot ([[HeroicSociopath and cause massive amounts of comedic havoc for everyone else in the vicinity]]) and are never touched on again. The sheer bizarreness of most of these powers -- like knowledge of every gourmet recipe in the universe and the ability to [[BrownNote paralyze people with his voice]] -- makes most of them fall squarely under the RuleOfFunny.
* Ryoko of ''TenchiMuyo'' certainly falls into this category when she gets immobilized from the neck down and shoots a bunch of lasers from her ''hair''.
* In ''CodeGeass'', Suzaku's "live" command, which initially took over his body and forced him to survive by any means, is almost completely repurposed in Turn 22. Now it makes Suzaku a better fighter without taking over his body or erasing his memories while it is active. No explanation for this blatant ignorance of how Geass is supposed to work is given beyond Suzaku having "an extraordinary mind."
* In ''TransformersVictory'', Deathsaurus uses Transformer-eating insects to try and kill Star Saber. They turn out to be vulnerable to cold, and then Victory Leo decides to reveal he has a freeze power.
* In Yu-Gi-Oh, the Millennium Items seem to have their standard powers, plus random other powers used in one or two situations, then forgotten for the rest of the show, even in situations where they would have been useful. For instance, in the first episode, Yami Yugi is able to use the power of the Millennium Puzzle to send the evil in Kaiba to the Shadow Realm. There is no explanation for why he didn't do the same thing to Marik during the Battle City Finals. Getting rid of Marik's darker side would have saved everyone a lot of trouble.
* Parodied in an episode of ''FullMetalAlchemist: Brotherhood'' where Ed, separated from Al, tries to invoke his "conveniently awakened telepathy!" It doesn't work.
** Ditto in the Manga.
[[/folder]]

[[folder:Comic Books]]
*''Comicbook/{{Superman}}''. He started out faster than a speeding bullet, more powerful than a locomotive, able to leap tall buildings in a single bound and invulnerable to anything less than a bomb. Since then he's learned to fly, to blow like a hurricane, to survive nuclear explosions, chill things with a puff of breath, shoot lasers from his eyes, and use {{X-Ray Vision}}. And that's just the powers that have lasted: during the SilverAge, he gained a new power nearly every month (Super Ventriloquism was bad. Being able to travel through time as easily as he could fly was worse). The super-breath, at least, is a logical extension of someone with the kind of lungs he must have... although, even so, he really shouldn't be able to do more than emit a single shock-wave of air; he may have a super-strong diaphragm but his lungs aren't any bigger than human lungs.
** The movies were even worse with this. The most gratuitous new power was probably ''Superman IV: The Quest For Peace'''s "Rebuild-the-Great-Wall-Of-China-vision", but the weirdest may have been the "Saran-wrap-S-shield" in ''Superman II''.
*** Let's please not forget the memory wiping kiss.
**** That's easy to do; just don't let him kiss you.
***** Interestingly, how do you know if this has already occurred or not?
***** I think if Superman '''really''' wants to kiss you, there's not really a hell of a lot you can actually '''do''' about it.
****** Not that you'd mind. You hussy.
***Kryptonians suddenly also have the ability to teleport/blink at will, and shoot kinetic beams from their hands in ''Superman II'' as well.
*** From the first movie: Flying around the world backwards to reverse time. Even the excesses of the SilverAge didn't give him the power to drop a DeusExMachina whenever he felt like it. Same principle with the super-kiss in the second movie.
** Webwriter Seanbaby effectively skewers this trope on his {{Superfriends}} page, as follows: "Superman had at least 150 powers, and the writers were making up two or three more every episode. If a script called for it, Superman would leak paste out of his ears that can control the weather. His fingernails might cure cancer and create food, he may never remember."
** Superman's MirrorUniverse counterpart Ultraman actually has this as his superpower: exposure to Kryptonite, rather than harming him, causes him to develop new abilities.
*** And Red Kryptonite (occasionally, in some continuities) lets the "regular" Superman develop new abilities, albeit temporary ones.
** {{Two Words}}:[[http://www.superdickery.com/index.php?option=com_content&view=article&id=679:superweaving&catid=36:stupor-powers-index&Itemid=38 Super Weaving]]
**In one strip, Lois is going blind and she wants to see a play based on herself before this happens. But the play is only a script, so Superman uses super-puppetry to make it appear that actors are performing on stage (Lois' vision is blurred so she doesn't notice.) He also uses "super-memory" to learn the script, even though he could just ''read'' it given that he's offstage.
** Other silver age classic powers: super-hypnotism, super-kissing (don't ask, really), and super-mimicry.
** The original TV show mostly restrained itself from this, but huffed this trope twice, once to give Superman the ability to phase through walls, and once to let him split himself into [[strike:multiple]] two Supermen. Both of these powers vanished after the episode.
*** [[spoiler:The second was partially subverted when Superman realized each of his two selves had much weaker powers than normal, and had to recombine himself into a single Superman in order to save the day.]]
** In one episode of the {{DCAU}}, Superman teams up with Robin to search for Batman, and displays his super-mimicry to first mimic Batman, then Robin himself. [[CrowningMomentOfFunny This completely freaks Robin out, and he demands that Supes]] [[NeverSayThatAgain "Never. Do that. Again."]] Superman never uses this power again.
** [[http://comiccoverage.typepad.com/comic_coverage/superpowers-that-time-forgot/ There's plenty more examples from the comics.]]
** The basic assumption was that, for any ability a normal man might have, Superman could do it or learn to do it much better. If a man can blow out a candle, then Superman can blow out a forest fire (never mind that his lungs aren't that big). The problem lay in that the writers didn't consider how ventriloquism or hypnotism really work, so Superman was shown ''literally'' throwing his voice, or hypnotizing people almost effortlessly.
**The time travel ability is a logical extension of the fact that they'd already established he could fly faster than light; the real question is how he ever broke the light barrier ''without'' time traveling.
*** That only works going forward, and depends on your point of view.
** To sum it up, Superman only has 1 super power, the ability to pull any super power he wants out of his ass.
* [[Comicbook/SpiderMan Spider-Man]]'s archfoe The Green Goblin is able to come BackFromTheDead (via WakingUpAtTheMorgue) thanks to a healing factor he wasn't even aware he retained. Then again, it's not surprising that he'd be unaware of a power he had to ''[[DieOrFly die]]'' to use.
** Spiderman also has in his rogue's gallery a villain called "The Answer", whose powers are ''defined'' as "whatever is necessary in the current situation".
*** The mutant Lifeguard has essentially the same power. She will develop whatever power ''will be'' necessary next to save lives. So, unconscious precognitive adaptation.
*** Also in the same vein is Darwin, who's body will evolve on the fly to meet the problems in the situation, even though Darwin has no control over what evolves or how it works.
* TheLegionOfSuperHeroes (more uses below) took this specific version and applied it even further. Ra's Al Ghul set the Moon on a collision course with the Earth. This gave off "hypertaxis energy", which caused humans to evolve to survive a threat before it happened.
* MartianManhunter was prone to this, at times having the power to control magnetism, strain gold from water, and ''create ice cream with his mind''.
* {{Spawn}} was able to pull pretty much any kind of power he wanted out of thin air.
* ''X-Men'''s Marrow had her heart torn off her body by Storm, but later was revealed to be alive. How? Spare heart.
** ''X-Men'' also has Darwin, whose power is called "reactionary evolution"; that is, whatever power he needs, he gets. Lampshaded during ''World War Hulk'' when his power decided the best defense against a rampaging Hulk was...to not be there, as illustrated by his teleporting away.
** Might as well put Magneto in there as well. He started off with the ability to control metal magnetically, then developed the ability to fly with a reasonable enough explanation. Then, as stories became more ambitious, he was suddenly able to control the entire electromagnetic spectrum, which effectively made him invincible. Of course, then there's the ''Planet X'' story by GrantMorrison, in which he's powerful enough to (somehow) control gravity and ''time.'' (Grand Unified Theory?)
*** To be fair to the ol' Master of Magnetism, in the 4th or 5th issue of the original X-Men run in the 1960s, Magneto was also supposed to be one of the most powerful psychics on the planet (second only to Professor X). He even duelled with Xavier's psyche on the Astral Plane. Mercifully, his psi powers were quickly abandoned and forgotten.
** GrantMorrison used this trope by [[strike:an AssPull]] a CerebusRetcon in his run on ''X-Men'' by introducing "secondary mutations", which would grant entirely new sets of powers to mutants, even years after they first gained their powers. This was his excuse for turning Beast into a cat-person and letting Emma Frost turn into living diamond for no obvious reason.
** One ChrisClaremont story suddenly gave Storm SuperSenses, because she could feel the effect everyone arround her had on the local air pressure or something.
* In the ''{{Legion of Super Heroes}}'', [[AngryBlackMan Tyroc]] had the power to warp reality with his [[MakeMeWannaShout screams]]. (Of course, this made the "screaming" part just color...no pun intended.) He could do nearly anything, from teleportation to pyrokinesis to... making it rain glue. The character was soon written out; common wisdom is that the writers had no idea what to do with him.
** In the ''{{Legion of Super Heroes}}'' supporting characters, Duplicate Boy had the ability to copy ''any power he wanted'', including those he made up. Of course, his abilities were rarely used properly by the writers.
** The villain Nemesis Kid had the ability to temporarily gain whatever power he needed to fight any single opponent. This one was used just as badly; he was killed in hand-to-hand combat by Queen Projectra -- without her using her illusion powers -- the only given reason why his ability didn't provide him with invulnerability as well as immunity to illusions was being too ''intimidated'' to concentrate on activating his power. One would suppose he would gain invulnerability against physical attacks against any foe capable of throwing a punch... And no, he never fought Duplicate Boy.
** Simple. He could only counter one power set at a time. Otherwise he could just have abilities to beat Superman a few times, and be omnipotent.
* The ''DoomPatrol'' villain "The Quiz" had "every power you haven't thought of". Literally; to fight her, you had to start shouting power names so she couldn't use them.
* Inverted in an arc of ''{{Exiles}}'' in which the team arrives on an [[AlternateUniverse Earth where the Skrulls have ruled since the 19th century]], and several of them are thrown into a gladiator arena to fight other superpowered beings. Mimic, a mutant with the power to copy and hold onto the abilities of up to five other mutants, strikingly showcases "all four" of his various powers as he fights his way to higher tiers of the arena, until he finally comes up against "The Champion", that universe's version of {{Captain America}}. The Skrulls are expecting an epic fight, when Mimic ends it in ten seconds by letting loose optic blasts he copied from the {{X-Men}}'s Cyclops. The reader knows he has this power (if he's been paying attention), but the audience is shocked.
* While not powers, per se, [[Comicbook/{{Batman}} Batman]] seems to always have that one thing in his utility belt that saves the day, despite there never being mention of it before. This was especially true in the SilverAge, on [[Series/{{Batman}} the TV Show]] (shark-repellent bat-spray), and on the SuperFriends ("You're a mouse? I'll put you in the bat belt mouse compartment!"). Fans have come to expect him to have all sorts of basic toys there (as well as a chunk of kryptonite in a lead-lined pouch because you can't be too careful), and the better writers either have him specifically preparing for a fight or have him {{MacGyver}} a solution out of things you would expect him to have.
** In the lastest movie the Joker apparently had Hostages and Moles as Plot Demands as well as Schrodinger's bomb planted hospitals and boats.
** There's been a theory going around for awhile now that the ability to spontainiously generate whatever he needs most in a given situation is in fact Batman's superpower. This combined with his crazy preparedness and rediculous paranoia easily makes him the most powerful character ever.
* Captain Everything from ''normalman'' was the most powerful being on the planet Levram simply because he could defy all laws of physics, exhibiting a new power at every plot twist. Of course, this is just one of the ways in which he's a parody of Superman.
** If I remember correctly, he was also a complete moron, who forgot that he could fly ''while in midflight''.
* Also from the {{DCU}}, Infinity Man had the ill-explained power to, uh (googling it), bend all natural laws. He can modify the atomic structure of things. Good.
* Resurrection Man's powers were ''literally'' dictated by the plot; anytime he died, he would come back immediately possessing some power that would have allowed him to survive what killed him. Drop him off a cliff, now he can fly, shoot him, now he's bulletproof, etc.
** New Spider-Man foe The Freak has the same ability.
** As does Doomsday, the only monster to ever kill Superman- except he develops new abilities that counter anything that harms him. At one point, he develops bony ear coverings to counter a powerful sonic gun.
* ''Dial H for Hero'' was based around a mysterious dial that enables an ordinary person to become a superhero for a short time, by selecting the letters H-E-R-O in order. Each time it is used, the dial causes its possessor to become a superhero with a different name, costume, and powers.
* In the children's comic ''Korgi,'' the magic corgi spontaneously develops the ability to breathe fire.
* ''Darkhawk'' is an interesting variant on this trope, in the sense that Chris Powell [[HowdoIshotWeb didn't get an instruction manual along with the fancy amulet that transforms him into Darkhawk]], so he ended up discovering many of his powers by trial and error, most notably in reacting to new and stressful situations.
** [[TheGreatestAmericanHero This sounds familiar.]]
*The new Warriors had an enemy/ally named Helix, who adapted to '''any''' threat against his body, be it disease, telekinesis, spider webs, or a beat down from [[FlyingBrick multiple super sonic flying, nigh invulnerable, super strong enemies]]. As soon as he was out of range from whatever threatened him, his body dropped whatever adaptations it developed.
* The DC villain Paragon has to power to mimic the superpowers of any superhero near to him. But he can also add a twist the originator cannot perform, so he thinks he is superior because he can use any power better.
* In a non-superheroic example, Thorn from ''Bone'' displays more and more ludicrous powers as the plot goes on, everything from simple PsychicDreamsForEveryone to seeing invisible ghost circles to super-strength to ''flight''.
[[/folder]]

[[folder:Film]]

* The Heisei ''{{Gamera}}'' series deconstructed this trope completely. Gamera reveals in the second film to have a "[[WaveMotionGun Mana Cannon]]" that obleterates the enemy of that film. It is learned in the final film that using that attack drained the Earth of its health, and [[GaiasVengeance releasing a hoard of Gyaos upon the planet]]. It is also learned that Gamera [[FriendToAllChildren bonded with humans]] in order to gain the [[GreenLanternRing ability to mutate and get new powers]] such as the Mana Cannon and Flame Absorbing powers--but the Mana Cannon cost him that connection to humanity as well! This causes him to ignore Property Damage as he hunts the Gyaos.
* [[JustifiedTrope Justified]] (or, more accurately, [[HandWave Hand Waved]]) in ''TheDarkCrystal''. At the moment when it would be most convenient, one of the two main characters, who are the last of their kind, exposes wings and starts to fly. They have this matter-of-fact conversation:
--> Jen: Wings? I don't have wings.
--> Kira: Of course not. You're a boy.
* In ''WhoFramedRogerRabbit?'', Roger Rabbit meta-explains his ability to escape his handcuffs easily, when he left them to help stabilize the table as Eddie Valiant was trying to saw them off.
--> Eddie Valiant: You mean you could've taken your hand out of that cuff ''at any time''?!
--> Roger Rabbit: NO! Not at any time - only when it was ''[[RuleOfFunny funny]]''.
* In ''[[FridayThe13th Jason Goes to Hell: The Final Friday]]'' Jason can suddenly hypnotize and possess people after an ambush by the FBI leaves his body completely obliterated, apparently forcing him to "evacuate" it.
* Once Neo realizes he's "The One" in ''{{The Matrix}}'', he can pretty much do anything, which is exacerbated in the sequels.
* [=R2D2=] in ''StarWars'' manages to do just about anything.
[[/folder]]

[[folder:Literature]]
* Parodied in Michael Chabon's ''The Amazing Adventures of Kavalier and Clay'', in which our heroes create a comic strip character, The Escapist, just before the start of World War II. He begins as a detective-escapologist character. By the later years of the war, he's pulling tanks apart with his bare hands.
* AnitaBlake is the best example of this ever, having morphed from a simple animator/necromancer in the book series to...frankly, this editor lost track of them all a long time ago. But in pretty much every big confrontation, she gets a new Power of the Month.
** These days, they all require her to [[DeusSexMachina have sex to activate]], in a weird, squicky CharacterDerailment way.
*** In every single book, Anita pulls a new power out of her ass, spends a bit in the hospital from "overdoing it", and from then on can use the power whenever. As to character derailment, when you ''start out with'' an AuthorAvatar CanonSue who has a flirtatious relationship with the vampire that wants to mind-rape her, it's hard to say that the characterization train was ever on the tracks.
* In the second book of the ''NightWatch'' series, we are introduced to a character called "the Mirror", who is capable of becoming more powerful and acquiring complex magical abilities in order to match whatever situation he is facing at the time. It is justified due to the fact that a Mirror is formed from the magical Twilight for the specific purpose of redressing imbalances in the power structure of the magical Others, and once that goal is accomplished, it ceases to exist.
** Magic, generally speaking, is pretty free-form in ''NightWatch'' anyway - it works by making "signs" in the Twilight, and an exhaustive list of those signs is never given. The only Others held to have limited scope in their powers are the low-level Dark Others like vampires and werewolves - everyone else just has ''aptitudes'' for a particular kind of magic (healing, shapeshifting etc.) or is considered to be a generalist.
* The resolution of the Telzey Amberdon story "Resident Witch" relies on Telzey's psychic powers including the ability to BodySurf, despite no previous indication that she could do this.
* Richard, in the SwordOfTruth series.
* The whole Flock in the fourth ''MaximumRide'' book, and Angel throughout the series. That was one of the things that bothered this troper about the fourth book - all the random power-getting.
* Daniel in ''The Dangerous Days of Daniel X'' by JamesPatterson. Almost every chapter he gets a new power. He can create people from thin air, control animals, turn into animals, create different scenes(like turn a messy room into a clean room), has an internal iPod, and is incredibly intelligent. And this is just the first book.
* Dwarves in ArtemisFowl get a new ability every book. They can tunnel by eating through earth, [[{{Fartillery}} fire a devastating barrage of digested rocks/mud/whatever they just dug through]], propel themselves underwater and ignore the bends because of intestinal bacteria, have saliva that works as a healing balm, can cling to walls if dehydrated, have glow-in-the-dark spit, which can also solidify to trap enemies, have prehensile beards/antennae (very handy lockpicks/emergency automatic surgical needles). I would not be surprised if they were revealed to have chameleon skin or ejectable teeth in later books.
* ElricOfMelnibone picks up powers as required, but this is justified as many of his powers come from historical [[DealWithTheDevil bargains with demons]]. It's also worth noting that Elric's powers and allies aren't necessarily ''reliable'' - just powerful.
* This is explicitly a power of the house elves in ''HarryPotter''. An elf's owner's will is more powerfully binding on the elf than reality itself. Elves spontaneously develop new powers as necessary. They also seem to be unaffected by any enchantment that would impact their ability to obey their owner (or Harry Potter, in Dobby's case).

[[/folder]]

[[folder:Live Action TV]]
* [[TheSpock Spock]] was a master of this. In various episodes (and movies) of {{Star Trek}}, he suddenly demonstrated the abilities of mind-melding, the Vulcan nerve pinch, a light-protective nictating membrane, an "amnesia touch" that allowed Kirk to forget about a girl he was pining over, and a detachable soul that would allow him to later come back from the dead. Absolutely none of these were telegraphed before he absolutely needed them (as opposed to say, Wesley Crusher being told he had a great destiny by the Traveler long before he pulled the ability to stop time [[AssPull out of his ass]].) This, plus his refusal to admit that his parents were the ambassador and his wife or that he had to have sex with his wife or he'd die, make it ''almost'' plausible that as of {{Star Trek V}} he could have had a long-lost half brother he never told anyone about. Almost.
** By the end of the ''Sarek'' novel by A.C.Crispin, it's abundantly clear that Vulcans are far superior to PunyEarthlings. Vulcans have great strength, touch-telepathy, peacefulness, control over body functions, mental timers, incredible memory, martial arts training, etc. Their infants don't cry, either.
**The great strength and touch-telepathy are {{Canon}}. So is the martial-arts training, sort of. (In his first appearance, when Sarek is accused of breaking another ambassador's neck, Spock helpfully points out that Sarek is trained the ancient Vulcan neck-breaking art of Tal-Shaya. And that if he had a reason to kill, it certainly wouldn't be a breach of character. Thanks, son!) The peacefulness is directly related to the martial-arts training (Vulcans get pretty darn violent without it).
**Oh, and in ''Voyager,'' Pon Farr is contagious: B'Ellanna gets it. She's her own champion in her mating fight...
*** This troper recalls that the Vulcan who wanted her was undergoing Pon Farr himself at the time, and hit B'Ellanna with a mind-meld that temporarily triggered a similar mental short-circuit in her brain.
**Klingons get some of this once they cease being AlwaysChaoticEvil. For instance, in the ''Next Generation'' episode "Ethics," [[strike:an operation gone wrong]] a shaky camera accident breaks Worf's spine, paralyzing him. During the experimental operation to replace his spine, something goes wrong, and he goes braindead. For a moment, it looks like disaster; then his other [[strike:spine]] neural system kicks in.
*** After correcting that horrible mess, I must point out that, in all fairness, this was telegraphed the whole episode by pointing out that Klingons have twice what they need of ''everything.''
**Data from ''Star Trek:TNG'' was always coming up with new tricks. Like "The Royale" when he discovers the loaded dice then ''spontaneously reloads'' them.
***That one is perfectly justified. Data noticed that the dice weren't balanced, so he used his super-strength to reshape them so they were. As an android, such precision is hardly a surprise.
* In the first appearance of the Tenth Doctor in ''DoctorWho'', the Doctor gets his hand chopped off in a sword fight. Luckily he remembers that he has enhanced HealingFactor shortly after a regeneration and grows back his hand.
** Of course, the Doctor's ability to regenerate is the result of the show's creators needing a way to [[RealLifeWritesThePlot explain]] the actor switch from William Hartnell to Patrick Troughton.
** The Doctor's use of this trope pales in comparison to his sonic screwdriver, which has thousands of settings. A list of everything it has done would be as long as this page. The original series wrote it out as it was becoming omnipotent and the writers used it as a get-out-of-trouble-free card too much. TheMovie brought it back, and the new series imposed some definite restrictions on its abilities so as to have a reason ''not'' to let the Doctor use it to get out of anything. It's still pretty handy, though.
* ''{{Ultraman}}'', ''Ultraseven'' and the other ''Ultra'' heroes are the kings of this. Though they have a set powers base, many develop and use one-shot energy attacks for specific monsters that are never seen again, or, even, completely pointless in the face of a pre-existing energy attack. And each time they would re-appear in another series, they'd only have the very basic forms of Ultraman powers they were known for. However, the worst offender is Ultraman Jack/''The Ultraman Who Returned'', who has the Ultra Bracelet--a weapon that can shapeshift into whatever is needed at the time: a shield, eye-slugger, blade, sword or--Cross-Shaped Lance to stake an alien named Draculas.
* This happens to the ghosts from Ghost Whisperer a lot. Sometimes it gets a brief explanation. Usually not.
* ''{{Smallville}}'''s Chloe Sullivan. Ret-conned into having super-powers in the first place, she initially develops healing powers and then "super-intelligence" which manifests as a machine-like ability to run search algorithms in her head.
** Chloe didn't develop super-intelligence so much as [[spoiler:she gained it when Brainiac took up roost in her mind.]]
* {{Heroes}} puts some interesting spins on this one:
** Several characters demonstrate the ability to acquire new powers from other powered people. Peter Petrelli copies them, Dad Petrelli takes them, and Sylar rips them out of their heads (killing them, and he gets to use Peter's copying power later).
** In general, the whole series operates this trope at a higher level. If the writers need a new power, they don't give it to an existing character, but introduce a new character with the desired ability. One of the benefits of LoadsAndLoadsOfCharacters is nobody much notices a few more or less.
[[/folder]]

[[folder:Tabletop RPGs]]
* This is such a prevalent trope that most superhero [=RPGs=] have some sort of mechanic to represent it. For instance, the RPG ''Mutants & Masterminds'' has a Hero Point mechanic that allows you to turn one of your superpowers into another for a single use. While keeping the new power "in theme" with your other abilities is encouraged, it isn't strictly necessary...
** There are also the Variable structures, such as Nemesis and Adaptation.
*Parodied in ''Paranoia'' by the aptly-named "Deus Ex Machina Man".
[[/folder]]

[[folder:Video Games]]
* In ''KnightsOfTheOldRepublic 2,'' the protagonist finds himself in dire straits as he is put into a cell full of poisonous gas. Just as all hope seems lost, one of your Jedi allies contacts you telepathically, and quickly teaches you in the Jedi art of [[MonkeyIsland Guybrush]]-caliber breath-holding.
**To be fair, said protagonist is actually relearning an old power.
** On the other hand, you could easily have three different varieties of gas mask and a neural implant at this point that make it unnecessary.
*** What's funny about that is if you talk to your party members before going one of them says gas masks wouldn't work.
* This happens to Seere in ''{{Drakengard}}'' as part of a ludicrous HandWave that was necessary because [[TheWorldIsAlwaysDoomed they were all doomed]], and the ending couldn't be "[[KillEmAll Everyone was eaten]]."
[[/folder]]

[[folder:Webcomics]]
* Aylee from ''SluggyFreelance'' gets this a lot due to periodically undergoing some involuntary ShapeShifting. At various points she's gained the ability to regenerate, fly, breathe fire, extend and retract poison spikes, and emit electro-magnetic pulses. She loses most of her old abilities whenever she assumes a new form, however, so it hasn't made her overpowered.
** Aside from the involuntary nature of her shape-shifting, she's also hampered by the time it takes to adapt. She could enter a cocoon and mutate a new form to counter the current threat, but emerge only months after said threat has been dealt with, leaving her in a body she has no idea how to operate or maintain.
* {{Wonderella}} totally gets like a spillion powers when tied up.
* The Monster in the Darkness from {{Order of the Stick}}. The author has stated that he is a pre existing monster, but we'll have to wait and see how well his abilities synch up with what he is.
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[[folder:Web Original]]
* Quite a few of the people in Whateley are vulnerable to this, Fey and Jade. Chou is something like this, except hers is more Power Creep, Power Seep. A lampshade is hung in Call the Thunder 6.
**Justified in the case of Jade. All she can do is 'possess' objects using 'spirit-selves'. After a radiation accident, she can regenerate. However, within the 'possessing objects' thing, she has QUITE a few ways to use it. For instance, she can 'possess' a cloak, and then possess something the cloak is touching, such as a metallic arm. Then, she can have both the 'cloak' and the 'arm' as herself. Or, if she 'possesses' a bedsheet, she can wrap it around her 'spiritself', and look like a girl wearing a bedsheet. Then she gets creative. Also, the author makes sure to have her expand her powers and figure out how they can work BEFORE it becomes useful, sometimes even a full-fledged novel beforehand!
** But these kids have had their powers less than a year, and they went to [[SuperheroSchool Whateley Academy]] to learn to use them. So most of their powers are [[ChekhovsGun Chekhov's Gun]] (Phase has done this a couple times) and [[ChekhovsSkill Chekhov's Skill]] (Chaka) and TrainingFromHell (everyone in Ito's aikido classes) and TookALevelInBadass (Jade and Lancer, at different times). Still, some of Tennyo's powers are definitely NewPowersAsThePlotDemands. I mean, the reality warping that ripped open a hole in space-time? Come on!
[[/folder]]

[[folder:Western Animation]]
* ''AvatarTheLastAirbender'', usually in the form of "what can their ElementalPowers effect". Katara learns to heal with Waterbending after being burned, Toph invents Metalbending (supposed to be impossible) because she is trapped in a metal box, and Aang [[spoiler:[[strike:finds a way]] is taught to ''Spiritbend'' to take away Phoenix King Ozai's Firebending abilities without killing him.]]
** Yeah, yeah, JustifyingEdit, I know, but still, the first two are largely internally consistent. It's made clear in the series that waterbending can also be used a form of healing magic, Katara just hadn't realized that at the time. What Toph basically bended was the small Earth impurities present in the Metal,, which she managed to sense because she was blind. Metalbending also was actually just ''assumed'' to be impossible because nobody had ever managed to do it before, and Toph, being pretty much the greatest earthbender that has ever lived, was the first one to pull it off. If I recall correctly, Iroh actually mentioned shortly before the first display of metalbending that metal was the purest form of earth, just as lightning was the purest form of fire; only the very best firebenders can bend lightning, so only the very best earthbenders can bend metal. Toph is just the only one who's ever actually made the cut.
*A frequent element used in ''DannyPhantom'' where the main hero will often get new powers that'll ultimately help him in the end, one of the most blatant being his [[DangerousForbiddenTechnique ghostly wail]] and [[ElementalPowers ice ability]].
**Although the hero does tend to continue using the same main set of abilities, and only uses the extra ones on special occasions.
***Except for the ice powers. He ditches everything for ice, for some reason. Season 3 did this with more than just Danny, though--Danny got ice powers and temporary weather powers, while Kitty got some bizarre kiss-the-men-away power that seemingly came out of nowhere. Johnny better be careful not to upset her now.
* On ''TeenTitans'', Raven can do pretty much whatever she wants depending on the situation. She mainly relies on flight and telekinesis, but has demonstrated the ability to use clairvoyance, stop time, pass through walls, see brief glimpses of the future and change her appearance to a monster to "persuade" a villain to help them, among other things. This may be partially justified, because her powers are [[FunctionalMagic magic-based]].
** And more to the point she's the daughter of an all-powerful demon lord.
** As a villainous example, Brother Blood fits as well (in fact, his powers seem remarkably similar to Raven's, apart from the MindControl). Also overlaps with PowerCreepPowerSeep, as he goes from a psychic with a CompellingVoice (in his first appearance) to a near-god who can take all the Titans at once effortlessly and is only stopped by DeusExMachina (the season finale).
* While ''[[BirdmanAndTheGalaxyTrio The Galaxy Trio]]'' had consistent enough powers for Gravity Girl (play with gravity, usually by making things fly) and Meteor Man (grow parts of body, super strength follows), Vapor Man seemed able to do just about anything by attaching "-vapor" to the end. This included, but was not limited to: combustible vapor, freezing vapor, storm vapor (read: lightning), explosion vapor, and steam.
* Artha and Beau from ''DragonBooster'' displayed this a ''lot.'' It was explained that Beau had many hidden powers that would manifest themselves with training and experience. This, however, does not explain why the majority of these powers only appeared for one episode and then vanished for the rest of the series-especially jarring in the case of Artha and Beau [[spoiler:fusing together at the climax of one episode]], as the theme of combining abilities was ''central to the series.''
* In an episode of {{Doug}}, Doug quickly regrets inviting Skeeter in on creating a story about his superhero alter ego Quailman when Skeeter's own avatar the Silver Skeeter starts pulling powers out of his ass left and right.
** His inspiration, the Silver Surfer, is known for doing the exact same thing. Power Cosmic is more or less a ticket to do this.
* When Pirates of Dark Water was a miniseries, Tula was just a talented thief. When it got picked up as a series, she quickly gained heretofore unknown (even to her) powers of 'ecomancy,' effectively making her the heart kid from Captain Planet, but more with plants.
* [[SouthPark Balrog has lots and lots of powers...]]
* {{Ben 10 Alien Force}}: The Omnitrix's ability to repair genetic damage, first seen in "Max Out".
** For that matter, the Omnitrix [[SuddenlyVoiced talking]], from the same ep.
** The adding of new aliens in the original series almost always worked this way (except for the monster aliens), with their powers just happening to be useful towards the MonsterOfTheWeek...
* Cathy from ''MonsterBusterClub'' has so many wacky alien powers, it'd be easier to list the ones she ''doesn't'' have. She has a stretchy Mr. Fantastic body, can levitate and perform telekinesis, can glow in the dark at will, spins her forearm around like a drill... and many, many more, all conveniently described on the spot as something Rhapsodians (like her) can all do.
* On BatmanTheBraveAndTheBold, Batman uses [[SpiritWorld astral projection]] in one episode- an ability he's never even been hinted at having before, or has used since.
** And which is just a bit out of character, seeing that Batman is supposed to be a BadassNormal, not a psychic.
*** He did explain it, and since it is something he learned from Monks, it makes sense. A black belt in everything is hardly normal.
** Given that this version is a spiritual brother to the campy 60's series, I think it's what the creators were going for.
* RobotBoy does this. When the titular character "super-activates", it's as though his circuitry starts running on phlebotnium instead of electricity.
* The writers of ''{{Futurama}}'' admitted that they liked doing this when writing for alien species. Kif's abilities to climb walls and shed his skin were some examples of it.
[[/folder]]
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