Lots of Phlebotinum is voice activated: Kirk talked to the computer, Michael talked to KITT, Automan talked to Cursor. But there is no place where a voice activation is more universally required than when triggering a Transformation Sequence.
You are, more or less, not allowed to transform to your super-powered alter-ego without ranting some special key-phrase. This phrase may or may not be descriptive, but it should almost certainly be pithy. If your transformation Catch Phrase is lame, you will not be allowed to keep transforming.
In situations where the hero explicitly cannot transform without magic words, rest assured that Easy Amnesia or a silencing attack will rear its ugly head at least once, making the change impossible when needed the most. If the phrase also untransforms the hero, expect him to do this by mistake sometimes. Villains in particular will often be tricked into saying their power-down phrases.
And woe betide anyone who mispronounces the transformation phrase, as horrible, horrifying things may result.
The trope originated with comic-book character Billy Batson, who first used the Catch Phrase "Shazam!" to transform into Captain Marvel in 1940.
For some heroes, the phrase can be omitted when time does not allow, especially if the full Transformation Sequence is omitted. Superheroes who do not go through an explicit Transformation Sequence (Batman, Superman) are exempt.
A common Anime phenomenon, where it may be a form of Calling Your Attacks. In the Japanese dialog of Sentai and anime, the word "Henshin" — meaning roughly "change" or "transform" — is often found in the phrase, and is sometimes the entire phrase.
Differs from In the Name of the Moon in that By The Power Of Grayskull is the activation password for the Applied Phlebotinum, while In the Name of the Moon is a harangue directed at the opposition.
This is the magic Catch Phrase that actually causes or facilitates the transformation. For one that is simply a cool kind of rallying cry or way to get the adrenaline pumping ("Flame On!", for example), see Invocation. When either of these contains (or is) the name of the hero's new form, it's Transformation Name Announcement.
See also: Transformation Trinket
Examples
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Anime and Manga
Yu-Gi-Oh!: In the first season of the English dub, Yugi's transformation into the pharaoh is usually precipitated by his shouting the title of the series.
The title of the series, Yu-Gi-Oh is one of the pharaoh's titles, which translates to "king of games".
Parodied in Yu Gi Oh The Abridged Series with various shouts when Yugi transforms, the most memorable of which is "Super Special Awesome Ultra Special Sexy Transformation Sequence GO!"
Also "Wonder Twin Powers Activate! Form of, an Egyptian homosexual!"
The Bonds Beyond Time Abridged movie takes a run with it, where the line is "Super Special Awesome Ultra Special Sexy Transformation Sequence GO! In3D!"
Guyver: Likewise, Sho initiates his transformation by emitting the series title in a long, loud shrill. The live-action Made For TV Movies abbreviate the delivery, making him look a lot cooler. The live-action movies have a different character (American college student Shawn Barker, as opposed to Japanese High School Student Sho Fukamachi). Also, other Guyvers throughout various incarnations of the series have shown a few different ways of activating this. In the 2nd film, the Guyver-Zoanoid transforms by yelling "Bio-Morph." In the 1st animated series, Guyver II (in the Japanese version) didn't need a word at all. Guyver III went from yelling "Guyver" to "Bio-Boost" in later episodes. Guess at the end of the day the word just helps one focus.
The 1st transformation of Magical Girl Lyrical Nanoha involved Yuuno making Nanoha repeat a long, complicated speech that Nanoha later complains is too long and hard to remember; however, to his surprise, she's later able to transform by saying only "Raising Heart, set up!"
She also starts her spells with "Lyrical Magical!" (hence the title). Or at least she's supposed to... you could probably count on your hands the number of times she actually does so.
She does do the full speech again for the final battle of season 1, just to up the drama.
In the Japanese version, season one, her activation phrase is "Raging Heart, onegai", meaning that please really is the magic word (onegai means please).
Getter Robo, the majordomo of piloted Super Robot anime, used the phrase "Change, Getter X", where X was the number/name of the form to be assumed. The actual change was just assembling the combiner team in a new order. Later on in the series the phrase "Open Get" was used to disconnect the component vehicles.
Martian Successor Nadesico'sShow Within a ShowGekiganger 3, based heavily on Getter Robo and other shows of its type, uses "Let's Gekiga In!" (based on Voltes V's "Let's Volt In") for all its combination sequences, and "Gekiga Out" to disconnect the vehicles.
Each of the Sailor Senshi in Sailor Moon went through several different activation phrases over the course of the series, on the order of one or so a season, as they improved their powers and combat ability. The general formula was "[Planet Name] [Something] Power, Make Up!" The dub dropped the "Make Up" bit. The Dub also mucks around with the names themselves (despite originally being in English) sometimes resulting in made up stuff like "Moon Cosmic Dream Action". One really bad time had the Girls calling the first part of the phrase solo, then all at once calling "Make-Up!" The dub, due to the sheer omission of "Make-Up" resulting in it ending up as "Mars Star Power, Planet Power!"
The Sailor HellblazerCross OverFan Fic spoofs this when John Constantine accidentally sets his Transformation phrase as "bloody friggin' hell."
Sailor Jupiter's pre-attack powerup invocation probably counts. "Guardian Jupiter! Stir up the storm, summon the clouds, send me your lightning! Supreme Thunder!" She drops everything but the attack name later on, though. Though it does appear a few times later, making the attack seem more Bad Ass then normal.
If that counts, then this counts: "I call upon the powers of Zeus himself, infuse me with your heavenly thunder, which is actually lightning, but no one seems to notice. Pika-chuuu!"
Possible subversion: in Mai-Otome, the Otome's Phlebotinum-based powers require a vocal authorization from the Otome's bonded master before the Otome herself can verbally invoke her Transformation Sequence.
Spoofed in One Piece: Franky the carpenter is a Schizo Tech cyborg who activates his powers by shouting "Hentai!" (abnormality) instead of the traditional Toku phrase "Henshin!" (transform). While "hentai" can also mean "metamorphosis", its more common meaning of "weirdo" or "pervert" creates obvious humor, as other characters comment he is a weirdo/pervert for running around in nothing but a speedo and a Hawaiian shirt. However, he doesn't even activate his powers this way, and just likes saying the word.
In Futari wa Pretty Cure, Nagisa, at least, is quite surprised to hear herself call out her and Honoka's key phrase ("Dual Aurora Wave") when they begin their first Transformation Sequence. This also happens with their after-transformation speech and their attacks. No explanation of any kind is ever given.
This was repeated in the spinoff series Futari wa Pretty Cure Splash☆Star. This time there was an explanation (although not one that can be extended back to the original series), and as a result Saki and Mai don't really question it later on (whereas Nagisa continued to be confused whenever she and Honoka said "something weird again"). By the way, their phrase was "Dual Spiritual Power".
Yes! Pretty Cure 5 had "Precure metamorphose!" (Between that and the looks of the five girls, there have been accusations of ripping off Tokyo Mew Mew, which also uses "Metamorphose" as its phrase.)
Tokyo Mew Mew had "Mew Mew X Metamorphose!", X being the name of their eponymous food (strawberry for Ichigo, pudding for Bu-ling, etc.)
The dub changed it to "Power Pendant, Mew-tamorphosis!"
Trinity Blood: "Nano-machine Crusnik 02, starting operation at X percent level!". Every time Abel says that, he transforms from a big ditz into an incredibly badass killer.
The Empathic Weapons need their wielder to say the magic Catch Phrase in order to switch into a more powerful form. The Catch Phrase is unique to each weapon (though always including the weapon's name) and must be learned from the weapon itself. The phrase can range from the short ("Snap", "Shatter", "Dance") to longer ("Reign over the frosted heavens", "Shoot to kill", "Sting all enemies to death") to very long ("Flower wind rage and flower god roar, heavenly wind rage and heavenly demon sneer", "All waves rise now and become my shield, lightning, strike now and become my blade", "All things in the universe turn to ashes").
The more powerful form, Bankai is activated by saying just that, although everybody tends to say it's name afterwards anyway.
Unlocking said form also allows one to use the first form without any declarations. For example, while fighting Starrk, the two with the longest release 'phrases' - Kyoraku and Ukitake - activate the first release simply with the names of their swords and without fanfare (contrast with Stark's rather more showy transformation). Helpful given the potential for such lengthy verses getting interrupted by the Genre Savvy. (Rest of the time, everybody says their phrases anyway because they're cool.)
It's also parodied. Urahara tells Ichigo that the only way to activate some "magic armor" is to yell "TAKE THIS! THE POWER OF JUSTICE! JUSTICE ARMOR! JUSTICE HACHIMAKI! EQUIP!" at the top of his lungs. Ichigo eventually figures out it's useless, but not before humiliating himself. It later shows up as an actually useful item in a filler arc, leading to much outrage from Ichigo.
Aside from the zanpaktou, there's also kido, which can be unspoken by very high level users, to short phrases, to requiring scrolls to keep track of. Using a kido without the chant weakens it, even for the highest-level users, and when a less skilled user tries, it also increases the chance of the spell failing entirely (and possibly blowing up in the caster's face, as frequently happens with Renji).
In their variant of being Hollow-Shinigami hybrids, the arrancar usually go into Resurreccion mode by saying a specific word or phrase followed by the name of their zanpaktou. For example, Starrk says "Kick about - Los Lobos!", Barragan says "Rot - Arrogante.", and Nnoitra says "Pray - Santa Teresa!" By contrast, Vaizards don their masks silently (they still have zanpaktou with the whole fanfare, of course)
Science Ninja Team Gatchaman: The shift from "civilian clothing" to bird suits was triggered by speaking the phrase, "bird go!" into a special wristband. When the show was brought to America as Battle of the Planets, the phrase was "transmute!" In the G-Force permutation, the phrase was "G-Force, Transform!"
"Transmute to Fiery Phoenix!"
Ronin Warriors/Yoroiden Samurai Troopers used this to don their armor. Usually, they took a transformation stance, yelled out "Armor of X," and some sort of incantation. For Wildfire, this was Tao Jin("the way of virtue"). The subarmor could be summoned at will, and it was donned before entering battle. Apparently, when not in use, their armors took the form of glass spheres with their corresponding Confucian value(depicted with kanji) inside it.
Mahou Sensei Negima!: Western mages have personal "key" phrases to say before reciting spells. (For example, Negi's is "Ras tel ma scrir magister") There's also a 'training' key phrase for novice mages who don't have a personal one yet.
And Pactio cards, which summon a magical artifact for the user with the activation key "Adeat".
Modified in the KarasOAVs, where the transformation sequence is spoken by the hero's handler. (It's also one of the coolest transforms ever, albeit very long.)
Digimon Adventure had "Insert Name Here-mon, Digivolve to...!" in the dub, and "Insert Name Here-mon, Shinka!" in the original Japanese, which gets re-used in every series (with variations added), in addition to the phrases said by the humans.
Digimon Adventure 02 had "Digimental Up!" in Japanese and "Digiarmor Energize!" in the dub.
Digimon Tamers had "Insert Name of Card Here, Card Slash!" in Japanese and "Digi-Modify! Insert Name of Card Here, activate!" in the dub. Evolution/Digivolution being achieved through different cards, except for evolution to Ultimate/Mega which gets "Matrix Evolution!" in Japanese, and "Biormerge, activate!" in the dub.
Digimon Frontier has "(Double/Hyper) Spirit Evolution!" in Japanese, and "Execute, (Beast/Fusion/Unified) Spirit Evolution!" in the dub, plus "Slide Evolution!" when switching between Human and Beast Spirit.
Digimon Savers has "Digisoul - Charge!", "Digisoul - Full Charge!", and "Digisoul Charge - Overdrive!", plus "Charge! Digi-Soul Burst!" for the final Mode Change. The dub replaced "Digisoul," with "DNA," and changed the Burst Mode phrase to "Charge! DNA Burst Mode!"
Digimon Xros Wars has numerous variations of "DigiXros!", including, but not limited to "Double Xros," "Great Xros," "Xros Up," ect..
Magical Angel Creamy Mami: Yuu's transformation required the phrase "Pam puru pim puru parim pompun! Pim puru pam puru parim pompun!"
In Magical Stage Fancy Lala, Miho transforms into Lala by saying "Toki no kioku ni omoi wo komete, ima, Fancy Lala ni karei naru seichou!" which translates as "Bringing my thoughts into the memory of time, grow now magnificently into Fancy Lala!"
Hellsing had Alucard use the phrase "Releasing control art restriction to level (#)..." when he goes from merely terrifying to Horror Incarnate.
Voltron: "Activate interlocks, dynatherms connected, infracells up, megathrusters are go! Let's go Voltron Force!... Form feet and legs!... Form arms and torso/body!... And I'll form... the head!"
This doesn't happen exactly in the Japanese version (Golion). Before the lions combine into Golion, they do say "Let's Golion!". However, there is no "Form feet and legs..." part; the sequence itself doesn't have any dialogue except at the end in later episodes when Akira Kogane/Keith shouts "Golion!!".
Mobile Fighter G Gundam has the protagonist shouting "Rise, Shining Gundam!" whenever he decides to call his Humongous Mecha. It's not quite a transformation sequence, but close enough.
Gao Gai Gar: FINAL FUSION!! SYMMETRICAL DOCKING!! MEGA FUSION!! SYSTEM CHANGE!! SANMI ITTAI!!
Shinkon Gattai Godannar!! had "Drive change go," "Volspinner slave on," "Mushin ittai Godiner," and "Change Genesister."
In Sekirei, the Sekirei gain power with a kiss and a chant, called a norito. Each Norito is unique to that Sekerei:
Musubi - These are the fists of my pledge, crush the catastrophe before my Ashikabi
Kazehana - Wind of my pledge, blow away the dark clouds of my sekirei
Homura - These are the flames of my pledge, burn the Karma of my Ashikabi
Tsukiumi - This is the water of my pledge, purify the evil residing in my Ashikabi
Shiina - Decaying streams of my pledge, wither the cross of my Ashikabi.
Transformers: This trope is actually almost exclusively present in the Japanese-original series for most of the time in the American-original series, it is simply treated as something like breathing, in that it requires little to make it happen.
In episode four of Robots in Disguise, Sky-Byte had his mouth full of the MacGuffin, and was unable to transform because he couldn't say "Sky-Byte, terrorize!" around it.
In Japan, the transforming call for normal vehicle-to-bot stuff is simply "Transform" or [name,] Transform" in English, but in the Beast era, it becomes Henshin," which is the same in Japanese and quite familiar to fans of Kamen Rider.'' This means RID and BW 2 give us "Henshin" from the beast bots and "Transform" for the vehicle bots. Of course, the US version of RID leaves "Transform" as "Transform" as it would in the Unicron Trilogy, and gives the Predacons their familiar "Terrorize" command.
Cardcaptor Sakura: "Oh key that hides the power of the dark. I, Sakura command you under the contract! RELEASE!!!!!!!!!" Since CCS is somewhat of a magical girl parody, it doesn't actually cause HER to transform (that's Tomoyo's job), it just causes the key to transform back into the full-sized wand so she can use it to control the cards.
Dites in Chrome Shelled Regios are activated by saying "Restoration!" If the Dite has multiple forms, a number is appended to select the specific form: "Restoration Zero-One!"
In Tengen Toppa Gurren Lagann, Simon calls out the transformation of Cathedral Terra to Supergalaxy Gurren Lagann, while doing a reverse Glasses Pull (or crying tears of blood in The Movie). Viral goes Audience Avatar and responds "I was waiting for these words!" Seconded.
Kamichama Karin: AI AMU GODDO! (Other characters opt for Latin or actual Japanese catchphrases when transforming.)
In Is This A Zombie Ayumu and Haruna transform into a Masou Shoujo their keyword is, Nomobuyo, Oshi, Hashitawa, Dokeda, Gunmicha, De, Ribura."
Panty & Stocking with Garterbelt: Panty and Stocking have an elaborate chant while powering up their lingerie into ghost-slaying weapons. The full version is used once, and later parodied when it quickly decays into apathetic mumbling. Their demonic nemeses, Scanty and Kneesocks, have their own Power of Grayskull chant.
In Super Robot Wars Original Generation Divine Wars the main character, Ryusei Date, shouts out 'Variable Formation' whenever he and his two team mates combine in the Super Robot SRX. It's a homage and a parody of this trope because 'Super Robots always have to have a cool combination battlecry.'
In Jewelpet Twinkle the girls transform with 'Twinkle Twinkle Magical Charm Winkle Winkle Jewel Flash' while boys transform with 'Grilla Grilla Magical Charm Winkle Winkle Jewel Flash'. They also begin each spell with Twinkle Twinkle or Grilla Grilla respectively. In a later episode the fact the boys and girls transformation and magical phrases are different becomes a plot point.
The Weapons of Light (both the original Darkstar weapons and the knockoff; most notably, Gourry's Sword of Light) in The Slayers require the phrase "Light, come forth!" to activate their Laser Blade goodness.
The original Darkstar weapons are actually the followers of Dark-Star Dugradigdu, another plane's equivalent of Ruby-Eye Shabranigdu—instead of his followers becoming lords in their own right like Hellmaster Febrizo and Demon Dragon Garv, Dark-Star's lieutenants became weapons. In the series' main plane, the local Mazoku are invoked by a litany of titles at the beginning of Black Magic spells; the most famous is probably "O (that which is) darker than twilight, O (that which is) redder than flowing blood, buried in the stream of time", the invocation of Ruby-Eye himself, from the beginning of Dragon Slave.
Comics
Megaton Man uses the word "Overkill" to transform into his ridiculously muscled superhero form from his ridiculously muscled alter ego.
In The DCU, Jason Blood is changed into Etrigan when a certain poem is read, by him or by someone else. The full version is:
Change, change the form of man. Free the prince forever damned. Free the might from fleshy mire. Boil the blood in heart of fire. Gone, gone the form of man, Rise the demon Etrigan!
Often, especially in adaptations, only the two last lines are used. To change back, he recites "Gone, gone, O Etrigan! Resume once more the form of man!"
Other versions of the poem have been seen to work. Spoofed at least once by Blood himself, while in a particularly snarky mood:
Gone, oh little man so tame, Arise the demon... Whatsisname?
Shazam: Captain Marvel's "Shazam!". Along with Cap, the entire Marvel Family uses this magic transformation word. (Except for Captain Marvel Jr., who uses "Captain Marvel!") The Captain Marvel villain IBAC changes back and forth from his identity by saying his own "super" name, as does Junior's villain Sabbac.
DC is constantly messing with them, though. Billy Batson (calling himself simply Marvel) is now the wizard who gives the others their powers, Freddy Freeman (formerly Captain Marvel Jr) is trying to become a superhero named Shazam (who still uses his name to transform, but has thankfully gained the ability to make that optional, so he CAN say his name without transforming now), and, in a fit of nostalgia, Billy Batson/Marvel changed Black Adam's word from Shazam to "Chocolate Egg Cream" in an attempt to keep Black Adam from transforming. It didn't take. Black Adam then got rid of the powers himself by transferring them to a powerless Mary, creating Black Mary Marvel. Which went well...
A different Captain Marvel (There've been at least half a dozen, if not more, superheroes named Captain Marvel, none of which are related) had as his phrase the word "Split!" This would activate his power... the ability to split his body into pieces, even down to individual fingers. This was, apparently, necessary, but it doesn't make a lot of difference since for obvious reasons it wasn't a very long-lived comic.
Marvel Comics Captain Marvel parodied this once. Rick once shouted "Shazam" while switching places with Genis and he didn't understand what was that supposed to mean.
Thunder Girl, Big Bang Comics' Captain/Mary Marvel pastiche, had the word "Alakazam!" Her evil Nazi counterparts (who more closely resemble the rest of the Marvel family, with another Mary thrown in for good measure) have "Gotterdammerung!"
Golden Age hero Johnny Quick activated his abilities by reciting the formula "3X2(9YZ)4A". His daughter Jesse Quick did the same, until she lost her powers. It's not enough just to say the formula: you need to understand the four-dimensional construct it describes, and you also need a certain mental state and/or link to the Speed Force.
Towards the end of Johnny Quick's run (pun not intended), other speedsters attempted to point out to him that the formula was really pointless... his powers were simply an ability to tap into the Speed Force. This proved true when, in the process of his Heroic Sacrifice he started his formula several times, then finally simply thought "The hell with it" and ran at superspeed without using it.
Perhaps ironically, an even later issue of The Flash had our hero Wally West spouting the equation out of desperation to be faster during a particularly large disaster. Not only did he speed up, but time actually froze around him — keeping the world in a frozen moment of time that only fellow speedster Max Mercury could reach for a few minutes before being dragged out again. Time resumed its natural flow when Wally was finally able to let go and allow time to resume. 'Pointless' indeed.
Johnny Thunder commanded his magical (though literal-minded) genie through the mystical phrase "cei-u". In his early issues the running gag was that he wasn't aware of this, and the magic would happen at seemingly random times without him realizing that it was always after he has spoken the words "Say, you". Needless to say, he wasn't portrayed as very bright.
And then, to cue the amnesia part, he got Alzheimer's. He got better. Those magical genies are tricky.
Due to a later retcon, both "cei-u" and "say you" were revealed as backwards misspellings of the genie's name: Yz. Turns out he was a fifth dimensional entity, like Mr. Mxyzptlk and Bat-Mite. Legacy Character Jakeem Thunder's genie is named Lkz, or as Jakeem pronounces it backwards, "So cool".
Parodied in Defenders Indefensible, when a shockingly calm Bruce Banner attempts to stimulate a change into the Hulk, with such gems as "Hulk On!" and "Shazulk."
Also parodied some years before in a series in the Marvel humour comic Not Brand Echh entitled "Super-hero Daydreams". Each one-page strip had an ordinary person finding themselves in a situation, dangerous or mundane, where super-powers would be handy — such as being on the subway when the conductor fainted or in a queue at a cafeteria when a queue-jumper barges in and grabs the last serving of a particular dessert — or needed, as in the case of the guy about to be beaten up by a gang. In each case, the daydreamer imagines saying "Sha-Marvey!" and being transformed into a super-hero and saving the day. Most such heroes are Marvel characters, though some are made-up Expys, e.g., "Wonderful Person".
Shazam: The early Captain Marvel knockoff Marvelman, better known now as Miracleman, used the transformation phrase "kimota" (spell it backwards). His sidekicks use the phrase "Miracleman". Alan Moore's Miracleman series used both the amnesia and trick power-down cliches.
The aliens who pioneered the technology have multiple bodies, and swap bodies by using power words. The mad scientist who plundered the alien technology to create Miracleman put in a few little tricks. For example, when Miracleman hears a particular magic word, he transforms back into a human, and can't change for an hour.
The magician Zatanna and her father Zatara speak their spells backwards. (Remember: words backwards, sentences forwards!) However, Zatanna has sometimes explained away the need to do this as being merely a focus exercise.
The first Blue Beetle would shout "Khaji da!" and thus cause his Scarab to activate his powers.
There's a reason for this: "Khaji da!" is the Scarab's name, a point revealed in Blue Beetle #25 (of the most recent series).
General Glory, also from The DCU. He forgot his magic catch phrase after being mindwiped by the government. He finally tracked it down via the propaganda comics the government used to issue so they could deny his very existence. "You saw General Glory beating up a tank? Sure... stop reading so much, soldier."
A similar situation occurred with Wildstorm Captain Marvel Expy Maximum Man, whose alter ego, Kyle Trueblood developed Alzheimer's and afterwards spent every waking minute saying every word in every dictionary in every language he could find. His former archenemy remembered it and kept it from him out of spite. Eventually there was an emergency, and he told Trueblood what it was: Hecatean.
Golden Age (now Public Domain) superhero the Green Lama used as his transformation phrase the mantra "Om Mani Padme Hum". Since the Lama was supposed to be Buddhist this makes a sort of sense.
Fellow Buddhist-based hero Thundermind, of the Great Ten, used the same mantra. It means "All hail the jewel in the lotus," by the way.
Marvel heroine Go Go Tomago transforms into her powered form by saying her own superhero name.
Hawk and Dove, from the DC Universe, would magically gain their superpowers and costumes by shouting out loud their super-hero names. This would only work if there was danger afoot, however.
Kid Eternity, from both Shazam and Teen Titans, could say "Eternity" to summon a historical or mythological hero, who would then disappear after a certain amount of time. His archenemy, Master Man, could say "Stygia" to summon a historical or mythological villain, who would then disappear after a certain amount of time.
Issue #24 of Plop! contained a story called "The Bella Button Caper", in which the titular character was legislating to ban all comic books forever. In response, the "Great Comic Book Spirit" gave a twelve-year-old called "Comic Book" Mc Fiend the power to turn into a different DC superhero by saying - what else - "Plop!". After he finally cornered a remorseful Bella, the spirit told her to say "DC", which turned her into a comic book.
Colt Noble and the Megalords is a parody of He-Man and the Masters of the Universe, so naturally it comes complete with this. Prince Jaysen transforms into Colt Noble, Paladin of Power, by saying the "activation code" "Activation Code!" (shut up), and changes back by saying "Deactivate!" See, he was given this power by a weird robot intelligence and he didn't understand what was going on at first ("Choose your activation code." "Activation code?" "Now, choose your deactivation code." "urr, 'deactivate'?")
The Green Lantern Corps have their famous oath, which serves as a battle cry and is also the password for recharging their rings:
In brightest day In blackest night No evil shall escape my sight Let those who worship evil's might Beware my power—Green lantern's light!
Every other corps gets one too, except for Larfleeze (he, of course, wants one). Sinestro's is notable for mentioning himself by name and inverting the first two lines of the Green one ("In blackest day, in brightest night"); the Indigo Tribe's oath is in the strange language of their homeworld, and mentions Abin Sur (Hal Jordan's predecessor) by name.
The Lathe of Heaven has Doctor Haber use hypnosis so that George Orr will begin his "magic" dream state whenever Haber says "Antwerp".
Averted in the Tortall universe, in which the most powerful shapeshifter in the world quite frequently shifts into something else without saying anything at all.
After her series ends, she gets pregnant with a baby shapeshifter, and has to change shape whenever the baby does so she doesn't kick her way out. Another character comments that it is quite distracting to try to talk to the shapeshifter when she has to change shape every few minutes.
The Dresden Files: Harry Dresden casts his spells using Latin... ish phrases. He justifies this in his narration by explaining that words in foreign, unfamiliar languages provide a sort of insulation from the raw power of a spell for a wizard's mind. One time in Fool Moon he cast a spell when he couldn't speak. The spell worked fine, but he was badly disoriented for some time after. Presumably if Harry ever worked on his Latin he would have to start casting spells with another, even more obscure language, like most wizards do.
In a story by Wilhelm Hauff, the hero and his friend use the magic word "Mutabor" to turn into birds - and promptly forget how to turn back. They rediscover the magic word by spying on the bad guy bragging about how he tricked them.
In Anthony Boucher's story "The Compleat Werewolf", the magic word "Absarka" transformed the main character into and out of his werewolf form. There were just two problems with this: (a) as a werewolf, he had to get somebody else to say the word for him and (b) when he changed back into a human, he was naked.
In Bruce Coville's The Monster's Ring, the main character had to recite some doggerel in order to make the titular ring work, one verse to turn into a monster and another to change back.
In Zilpha Keatley Snyder's Black & Blue Magic, the main character had to recite a flying-related verse while rubbing a certain magic oil into his shoulder blades in order to grow wings.
1970s Wonder Woman rip-off Isis forced the titular character to recite a full-sentence incantation to activate her powers. Also, she apparently had to activate powers in a certain order (i.e. she couldn't skip around on her spell list) or an incantation wouldn't work.
Although in Operation Overdrive there were double-figure instant morphs. Still needed words for everything else, but when there was emotion involved, woohoo baby, they went for the silent approach. Similarly, Power Rangers in Spacecompletely skipped the morphing sequence and the catchphrase in their Series Fauxnale.
They weren't afraid to spoof it from time to time. Even as far back as the first season, whenever Billy did the call, he would often say it in technobabble, i.e. "It's time for molecular transmutation!"
It is not entirely clear in which cases the phrase is By the Power of Grayskull!, and in which it is an Invocation. For the original rangers, saying the name of their respective animal was required (Zordon tells them to summon their powers thus), and the now-famous prelude, "It's morphing time!" was absent in the very first morph (Zordon is the first to use the phrase in the second episode). With every team since (except Zeo), it was the team call, not the individual call, that triggered the morph. Time Force is a strange case: the Quantum Ranger's morpher was voice-activated, and this is explicitly different from the way the Time Force morphers worked. Doesn't stop them from saying "Time for Time Force!" to morph.
RPM justifies the catchphrase as a voice lock for the morphers.
Other series have it weird, for example those Rangers (like in Space and Lightspeed Rescue) whose morpher has a password keypad and is used as such, still have team call (and intricate hand gestures before typing their codes).
And just for fun, let's list them all in order!
"It's Morphin' Time!" (Mighty Morphin' Power Rangers and Power Rangers Zeo. Then followed with their original dinosaur/animal symbol (for Mighty Morphin Season 1 to 2) or '(insert color here) Ranger Power' (for Season 3) or Ranger designation (for Zeo)). note Tommy's calls during Mighty Morphin invoked his animals (Dragon and White Tiger for Green Ranger and White Ranger, respectively), but for some reason, they were rendered along with the "-Zord" suffix, leading to "Dragonzord!" and "Tigerzord!"
VR Troopers: used the phrase "Trooper Transform! We! Are! V!R!" to initiate their transformations. It's the "Trooper Transform" that's actually needed for the change.
Their foe, Karl Ziktor/Grimlord, did this as well, straddling the line between this trope and Invocation: "Forces of darkness, empower me! Take me back to my Virtual Reality!"
The Metallix season had: "Data-Bonders! Input card! Beetle-Blast!" for their Beetleborg forms and "Bug out!" and "Bug-back" to go to and from their bug forms.
Rohan, The Hero, had Battle Fury Armour, which he activated by shouting... go on, guess. Battle Fury!
Superhuman Samurai Syber Squad had "Let's Samurize, Guys!" (for Sam, The Hero), "Let's kick some Giga-butt!" (for Tanker, The Big Guy), "Pump up the Power!" (for Sydney, The Smart Girl), and a random non sequitur (for Amp, the Plucky Comic Relief) that essentially lampshaded the whole pointlessness of the henshin phrases (at least, until he was replaced: Lucky London, the second comic-relief guy, just said "Surf's up! ")
In the episode where everyone's personalities changed, Tanker and Sydney actually switched phras es.
Kamen Riders traditionally use "Henshin", though Showa-era Riders would occasionally use variants, such as Kamen Rider Stronger's "Henshin Stronger".
Kamen Rider Wizard: Shabadoobie touch to henshin! *repeats until he actually touches his transformation ring to the Wizardriver. When he does...:* Flame, please! Hi! Hi! HI HI HI!"*
Madan Senki Ryukendo has the protagonists shout out the name of their Empathic Weapon to turn them from a portable form into full-sized weapons. Since this is Ryukendo, it was Lampshaded in one episode where Kenji is in a large, echoey cave with some civilians a little way down another passage and a Secret Identity to maintain. He tries to whisper the name and his weapon retorts, "Can't hear you."
The Chou Sei Shin series used "Souchaku!" ("Equip!") as their standard transformation phrase. Chou Sei Kantai Sazer X, in keeping with their Xtremely Kool Letterz, would upgrade this to "X Souchaku!"
In Cutey Honey: THE LIVE, Honey transforms by touching two fingers to a little heart charm on her neck and calling "Honey Flash!". Her transformation is a naked/sparkle scene a la Sailor Moon, but the catch is that the people around her can see her naked and sparkling.
Super Sentai, the show Power Rangers get their basic concept from. For most of the earlier series that used it, the transformation call was simply the name of the team or form, but later series started to switch it up a bit. Most of these phrases are also used along with some action done with the Transformation Trinket. (Feel free to fill in the phrases of missing series.)*
If you're wondering where J.A.K.Q. Dengekitai is on the list, it's 'cause they don't have a phrase. Instead of hauling out their Transformation Trinket and shouting something catchy, changing was accomplished by entering a booth called a "strengthening capsule" to power up. There was a set at HQ and a set on their plane-fortress. You were in trouble if the Monster of the Week attacked and you were just out walking around town!
Taiyou Sentai Sun Vulcan: "Vul Eagle!" "Vul Shark!" "Vul Panther!" (There wasn't a team call, just the individual ones. If all were together, we'd just have Red saying "Vul Eagle!" and then all would be transformed when the stock footage ended.)
Dengeki Sentai Changeman: "Let's Change!" Or, alternatively, "Change [animal]!" if just one is changing, or if they're feeling particularly dramatic. However, sometimes, the "Let's Change" is omitted.
Juken Sentai Gekiranger: "Boil!/Echo!/Sharpen! Power/Cry/Blade of the Beast! Beast on!" (Power Trio gets the first, violet gets the second, white gets the third.)
Parodied - On the 29th January 2001 edition of WWF Raw, Taka Michinoku (of tag team Kaientai) once invoked The Power Of Grayskull while challenging the Dudley Boyz for the Tag Team Championship; they got curbstomped.
Tabletop Games
Done quite a lot in most RPGs that involve magic. Incantations and the like.
Most tabletop games don't require the player to chant anything, as it's assumed the PC says whatever he needs to say to get the desired spell activated (ie, Power Word Kill doesn't specify the word used).
Actually, the majority of the incantation is done during the prepariation step. The actions they take to unleash it are simply finishing the last part of the spell. (Sorcerer's use the words to help them focus as their power is largely instinctive).
Subverted in Dungeons & Dragons 3.5 edition, as a player can take Silent Spell as a feat, allowing one to cast spells without speaking when speaking is usually required, at the cost of a higher level spell slot.
There's also the Nonverbal Spell feat in one of the supplements which allows a spellcaster to bypass the use of words as long as they use some other sound (grunting, mumbling, or even singing). This was initially so that one race which didn't speak could still become a spellcaster. It also allows for a cheaper way of being stealthy than Silent Spell since it doesn't affect the spell slot level.
However, GURPS has an optional rule for spellcasting using cantrips; you can prepare in advance (or invent on the spot) a poem to cast a spell; longer poems give better effects. The player, not the PC, must recite or read the actual cantrip, and you're not allowed to "stop time" to make up a poem, so you'd better be good at improvisation or have a prewritten one at the ready.
Spells in Kobolds Ate My Baby require the player to perform the correct action/speak the correct words. The phrase for casting "Wall of Beer" was "Tappa tappa kegga, wall o'Beer omega!". Being invisible required the player to cross their arms and do their best to look like a brooding vampire.
Explained away in a Shadowrun book. People in the Shadowrun-verse yell, wave their hands in elegant motions, point, say things quite dramatically, and other magicky stuff, but when asked this, a mage says that it's all used to help focus mana. It's not necessary, though.
Video Games
The main character of Viewtiful Joe shouts "Henshin-a-go-go, baby!" (sometimes "Henshin around!") to activate his powers and costume because he uses a voice-activated watch. (He only needs to say "Henshin" - but what fun is that?) Similarly, in the same game, Captain Blue and Sexy Silvia also shout "Henshin!", while Stylish Alastor shouts "Devil Trigger!" and "Trigger me, baby!" In Viewtiful Joe 2, Silvia also shouts "Henshin-a-go-go, baby!"
In the anime adaptation, when Captain Blue Jr. eventually gains his own powers, he uses a variant of the phrase, saying "Henshin-a-Yo-Yo, baby!" (since he uses yo-yo's as weapons in his transformed state).
The main villain of the sequel, Jet Black, uses "TENSHIN!"
Averted in Devil May Cry: Although Vergil says some snappy phrases before using his Devil Trigger power and starting a powerful move, it is unnecessary, as using the Devil Trigger sans said powerful move is accomplished wordlessly. Dante and the playable incarnation of Vergil deliver no lines as they use their own Devil Triggers, either.
Dante in the Playstation 2 version of Viewtiful Joe however...
Highlight for proof that Dante wouldn't know a cool transformation phrase if it hit him in the face with a large trout: "Devil May Cry's a-rockin' baby, yeah!" Fortunately, he usually shortens it to the first three words.
Kermit's nephew Robin in Muppet Monster Adventure can turn into monsters after collecting their amulets and get their powers, and has a different call for each one.
Some of the Lumas in Super Mario Galaxy transform into various objects when fed enough star bits by the player. When this happens, they shout 'Transform!!!' which appears on the screen in a speech bubble in a very large, bold font.
And they appear to shout something that sounds like "Henshiiin!"
In the same vein, in order to Wave Change in Mega Man Star Force, one has to first say, "EM Wave Change, (Name), On The Air!"
Subverted, then lampshaded by Omega-Xis in the third game when Geo attempts to Wave Change and fails to before being registered with project Trans Code.
Geo: Man, that's so embarrassing! I even yelled and everything! Omega-Xis: That's strange, yelling makes everything work!
The asari of Mass Effect always say, "Open your mind, embrace eternity!" before using their mind-melding powers. It's just a religious thing.
Done with the "Gun del Sol" from the Boktai series. Django charges it by raising the gun sky-ward and shouting "TAIYOH!!"
The Gun del Sol also appears in Metal Gear Solid 4: Guns of the Patriots, where it is given the less Spanglish name of "Solar Gun" and Snake now charges it by yelling "sunlight!" instead of "taiyō" (unless you're playing the Japanese version, in that case he will still yell "taiyō").
In Flower Sun And Rain, Sumio Mondo has a computer named KATHARINE (Catherine in the English), which he activates with a variety of codephrases. Here is the first one:
Sumio: A mystery is concealed within this man! An endless journey — The prey protects its soul — While the hunter hunts the truth. A requiem solely sung for the search! Truth is singular. It's time to go to work, Catherine! The search culminates here!
The girls in Arcana Heart all call their Arcana with such a phrase. The biggest standout being Kira's "don't ask why, just give me your powers."
Super Monkey Ball 2 and it's quite bizarre story mode where the heroes had to chant a song before they could go rolling around a level. According to the subtitles, the song had lyrics, but it all sounded like "Uki uki uki-ki-ki!"
Combined with a Badass Creed in Princess Waltz: A sword in my hand. A vow on my finger. I am clad in white. I will become a contestant in the Waltz.
In BlazBlue: Continuum Shift when Ragna or Terumi activates his Azure Grimoire (thus turning into his Unlimited form) he shouts "Restriction 666 released! Dimensional interface force field deployed. Code S.O.L. Blazblue activate!"
Similarly, when activating his Blood Kain buff normally in battle, Ragna tends to shout either "Blood Kain!" or "Unleashing Armagus!"
Web Animation
Spoofed on Homestar Runner with the Strong Bad E-mail "lunch special", in which Strong Bad thinks that getting Bubs to say his name backwards without the first B (in other words, "sbu") will make him give away a free lunch special. Eventually, Bubs says it, and reveals that it doesn't make him give away a free lunch special but rather makes him lose his ability to fly (though he could really only hover a few inches above the ground anyway).
Bubs: Why are you trying to get me to say Sbu? Strong Bad: THERE! You said it! Now you gotta give me a free lunch special! Bubs: No, no, no. Getting me to say my name backwards minus the B just makes me lose my super power! Strong Bad: What super power? Bubs: Being able to fly. Strong Bad: You can fly!? Bubs: Well... not anymore, I can't. Strong Bad: Oh, right.
The email "shapeshifting" pokes fun at this, with Strong Bad imagining himself gaining the ability to shapeshift and, in addition to having to put up with pointless rules and restrictions, having to activate the power out loud:
"Shapeshift unto... a Sumatran tiger!" *DWAYNE!*
Web Comics
Dresden Codak has the Tokamak twins, not related to the Wonder Twins, and SCIENCE.
Alina: Probability distribution of... electron cloud! Dmitri: Density with mass reaching boundaries of... the Chandrasekhar limit!
In Cheer, Jo tries to activate the mysterious (and thus far useless) wand she's found via Grayskull phrases, similar to Peter Parker trying to use his weblines in the first Spider-Man movie. She even starts to try the original, but doesn't get to finish.
Parodied in Tales of Mynarski Forest; when the delusional Heywood raises his "magic sword" to the sky with a call of "By the Powers of Numbskull!" he gets struck by lightning with predictable results.
The Ignition Weapons from Tower of God unleash their powers by a very short version of this trope, e.g.: "Narumada, Ignite!" Getting them to listen to you is often a much more complicated matter.
Played with in one El Goonish Shivefiller comic: Ellen, having nicknamed her boobs "The Wonder Twins", yells "Wonder Twin powers... ACTIVATE!"
Ellen: Damn. I was hoping they'd get bigger. Grace: Are you wearing a towel as a cape?
In Sluggy Freelance, Zoe's transformation powers are enacted by the words "shupid" and "kwi". However, this works whether said by her or somebody else. (Kind of has to, since her alternate form is that of a camel... which can't talk.)
In WCI High, plain-looking Blossom Pearl transforms into sexy Awesome Girl by using her magic word, which is actually "MAGIC WORD", an acronym which stands for "Mighty Awesome Girl I Call, With Outstanding Rackage, Doll!"
Pv P featured a comic about the minor random character Lolbat, who is shown to be a child who activates the power of ancient memes with the phrase, "It's Peanut Butter Jelly Time!"
Averted in The Order of the Stick: while V does say "Shapechange" before transforming into a pink dragon for the first time, this is not what actually triggers the transformation. Rather, virtually all spellcasting in OotS has the name of the spell as a verbal component. The next time V transforms, no verbal statement is necessary, as the Shapechange spell's duration has not expired.
At one point in Bad Guy High, one of the kids got a He-Man-esque suit and a bunch of powers from some magic hermit. To call his powers, he had to call the hermit's name *
The name was the initials of various DC heroes, but can't recall the order
and a lightning would strike him, changing him. Saying it again restored his form, so he made that mistake a couple times. And once when SuperDan was holding him down on the ground, he recited the word a couple times so the lightning would strike Dan instead.
In Emergency Exit, Karl Tameron activates his couch robot by saying the phrase, "I sing the body electric," the beginning of a Walt Whitman poem. While this is not an example, it happens that later that same phrase not only transforms his couch but also seems to give him some manner of super powered electronics control, which satisfies the criteria. Fridge logic dictates that it's possible that he would have gained the super powers if he had a face the first time he said it and didn't need to use the speaking program from the portal bracelet, as he did not say the words himself that time.
Possibly in a reference to Power Rangers, the Dimensional Guardians from the web fiction serial Dimension Heroes must shout "Dimensional Guardians, power up!" to activate their Guardian powers.
Whateley Universe: When Action Girl Chaka gets a set of magical gloves that - once invoked - let her make four extra-hard punches, she has to choose the invocation phrase. Being a wacky teenager in a superhero world, she chose "It's clobberin' time!".
Super-speedster Jenny Thunder, a hero from the Global Guardians PBEM Universe activated her speed powers by yelling out the phrase "THUNDERBOLT POWER NOW!"
My Way Entertainment: "Black Power, motherfucker!" "Deep penetration!" "King Chili, motherfucker! Yeah~!" "Fried rice!" "Jose Canseco!" "Dragon shit!"
Western Animation
This trope takes its title from He Man And The Masters Of The Universe, where that Catch Phrase changed unassuming Prince Adam into his titular alter-ego. The much less known power-down phrase (used once each in the 1980's series and the 2003 series) is "Let the power return!"
Ironically (since he's the Trope Namer), it's not just the phrase that transforms him, he needs to be holding his magic sword (which he pulls out of Hammerspace). At one episode where he ventures to Orko's planet, where everything seems to work backwards (eg Orko's magic works correctly, and Adam's flame-throwing wrist gun spits out water instead), he had to recite the whole phrase in backwards to transform (he didn't transform when he said the phrase as normal early in the episode, then figured it out after some observing and analysis).
She Ra Princess Of Power: He-Man's Distaff Counterpart (and Separated at Birth twin sister), She-Ra, used a minor variant beginning, "For the honor of Grayskull..." In an episode when Adora (She-Ra's alter-ego) is rendered unable to speak, she cannot transform and is powerless until she recovers her voice. In another episode she is also rendered unable to transform when the orb on her sword is cracked by a powerful beam attack from the Horde (fortunately she gets it repaired after performing several difficult labors that test her resolve).
Transformers: Possible stretch, but when time permits, conversion to robot mode is accompanied by a transformer calling its own name, then saying, "Transform!"
Beast Wars used this trope more extensively, with "Insert Name Here, Maximize!" for Maximals, "Insert Name Here, Terrorize!" for Predacons and "Beast Mode!" for reversing it. Later in Beast Wars, some had vehicular modes with specialized names (at least once, Rattrap called his "Knieval Mode"). In Beast Machines, it was implied that the voice command was required, but there were a fair number of times in the original when they didn't use the voice activation.
In Beast Wars, Dinobot specifically changed his code whenever he switched sides.
"I Am Transformed" for the Beast Machines Maximals (a plot point in the early episodes, as the characters needed to learn how to transform, as it had previously been handled by an onboard computer in them.) "I am transformed" was more of a mantra as they tried to enter the mental state needed to transform without their computers.
Whereas the Vehicon Generals had their own personalized codes. "Thrust, overdrive!" "Jetstorm, afterburn!" "Tankor, pulverize!"
The Centurions had the activation phrase, "Power-X-Treme!" (or rather "pow-ER ext-REEM!") to beam down their weapons.
Super Ted had the phrase "I'll just say my secret magic word...", which the teddy bear would then whisper, turning into SuperTed. The word itself was never revealed on-screen, and in fact a lot of people think "I'll just say my secret magic word..." was the magic word. However, in one episode Texas Pete'sdim and not particularly villainous henchman Bulk overheard it and used it to turn into Super-Bulk. The same episode had SuperTed forget the word himself. This seemed to ignore the fact that Mother Nature hadn't ever given Bulk a magic potion to become super powered... that we know of.
A simple "Thundercats, Ho!" or "Ho!" is sometimes sufficient to fire a bolt, temporarily grow the sword, and activate a number of other context-sensitive powers. In the original, Lion-O did occasionally grow the sword without so much as a word.
"Sword of Omens, give me Sight Beyond Sight!" allows Lion-O to use the sword's Psychic Powers. This particular example is parodied in the Family Guy movie, where Lion-o uses the sword to spy on Cheetara in the bathroom.
A villainous example: Big Bad Mumm-Ra transforms into a One-Winged Angel form with the incantation "Ancient spirits of evil, transform this decayed form, into Mumm-Ra... the Ever-Living!Bwa ha ha ha HA!"
In one particularly embarrassing original series moment that that Mumm-Ra will never live down, Snarf of all people takes advantage of this catchphrase to become even more beefy than Mumm-Ra himself. Clearly Mumm-Ra's transformation chamber could do with better security.
The sister series Silverhawks also had a villain with a transformation speech: "Moon Star of Limbo! Give me the might! The muscle! The menace! Of MON...STARR!!"
Winx Club: Before 4Kids edited it, Bloom says "Bloom Magic Winx!" some of the time before transforming, with the other fairies substituting their names instead. Around season 2, it got reduced to just "Magic Winx!" When the girls earned new outfits, 4Kids did have the girls saying "Go Enchantix!" for a while.
Possibly similar to Inspector Gadget's "Go, Go, Gadget X!", a phrase that was used to activate the required gadget 80% of the time.
You mean the wrong one 80% of the time.
The Wonder Twins, from the second season of Superfriends, would shout "Wonder Twin powers, ACTIVATE!" to, well, activate their Wonder Twin Powers. This was followed by Zan shouting, "Form of (something made of water or ice)!" and Jayna shouting, "Shape of (an animal or alien creature)!" (Interestingly, the comics made it clear that this wasn't required at all, but just a habit; presumably as a courtesy to the audience who wouldn't understand that the Twins had just shifted shape.)
Challenge of the Superfriends added Apache Chief and Samurai as token ethnic characters to their line-up. Apache Chief could grow to 50 feet tall by saying "Inekchok!", which the narrator once assured us was the Apache word for "giant man". Samurai could turn into a tornado by saying "Kazi noyo ni hiyaku!", or turn invisible by saying "Koya ningi!"
To H-B's credit, Samurai was using genuine Japanese: "Kaze no yō ni hayaku" means "As swiftly as the wind", and "Tōmei ningen" means "Invisible man". It's entirely possible that Apache Chief's "Inekchok" is linguistically legit too.
Apache Chief's power was parodied by Family Guy. Saying "Inekchok" makes Quagmire's penis grow larger!
Used by Freakazoid, without even Lampshade Hanging it to any real degree. He has to say "Freak out!" to transform into Freakazoid, and "Freak in" to turn back into mild-mannered nerd Dexter Douglas. When Dexter says "freak out", he always precedes it with an extended "Ah" sound, like the chorus to the disco song "Le Freak" by CHIC.
In Fred And Barney Meet The Thing, young Benjy Grimm would transform into The Thing by touching his magical rings together and saying "Thing Ring, Do Your Thing!"
Subverted in DuckTales, where Bungling Inventor Gyro Gearloose programs the Gizmoduck suit to be activated by the phrase "blabbering blatherskite", believing that nobody uses it. Little did he know that it was mild-mannered accountant Fenton Crackshell's favorite expression and that he would transform into Gizmoduck for the first time purely by accident after uttering this phrase standing too close to the suit. In another episode, Launchpad starts using the expression, leading to some Secret Identity close calls. And in a later episode, the suit somehow shrinks in the wash... and its activation word becomes "blab".
The power suit seems to be able to hear the phrase no matter how far away the speaker is. In one episode, Fenton is hundreds of miles away and needs the Gizmoduck suit. He says the phrase and it activates, and flies across the country to get to him.
Not so much as it works that when Fenton is not within the suit's range, he calls it and says the word through the telephone. The reason that he had his mother use it the one time was because he forgot to turn on the suit's answering machine.
The actual phrase is only "blatherskite," chosen as the most obscure word in the English language. The blabbering part is just Fenton's expression, and he never realizes that he only needs to say the second half.
The spell that serves as a modifier for Raven's powers in Teen Titans is "Azarath Metrion Zinthos!"
Similarly, an issue of Teen Titans Go had the Titans' powers get juggled around, so Beast Boy ended up with Raven's magic and demonic taint. Her mantra doesn't work for him because he doesn't know what they mean, so she suggests he come up with something meaningful to him. He decides on "Tofu, Gamestation, Terra."
The Battletoads cartoon pilot had the three teenage protagonists shout out "Let's get warty!" to transform into their toad counterparts. A pretty stupid catchphrase, but not half as bad as what many people thought they said: "Let's get horny!" (As in horny toads. Hopefully.) "Let's get normal" was used for the reverse transformation.
Spoofed on The Grim Adventures Of Billy And Mandy, where in one episode, Grim uses the exact same speech as He-Man to teleport his magical scythe into his hands. He has never before, and never again does need to say those words to do that.
Grim may have just been having fun. Despite his usually dour demeanor, episodes have repeatedly shown that under the death's hood lurks a big goofball.
Spoofed during Nullzilla, where the characters summon vehicles for a Combining Mecha with voice commands. Bob, Dot, and Enzo get the usual speech related to the vehicles, but Frisket barks for his and Mike has to say "Gnat, slightly annoyed, high pitched buzzing force".
The short-lived The Avengers United They Stand cartoon based on the Marvel comic book of the same name had Ant-Man screaming Avengers Assemble!! followed by the transformation sequence of 3/4 of the team putting on powered armor. Scarlet Witch, Tigra and The Vision didn't wear any, being mutants and a robot respectively, so they were left out of the transformation sequence.
Arthur: I am King Arthur. Knights: And we are the Knights of Justice. We pledge fairness to all, to protect the weak and vanquish the evil!
This happens in Powerstone, with the main character Falcon (and all the other ones) shouting "Power Change!" every time he tries to transform. Early on in the series this doesn't actually work, as he has no control over when he transforms. (Interestingly enough, even when he transforms by complete accident, with no control over what he is doing, he still shouts "Power Change!")
In Jem, a rare western Magic Idol Singer series, Jerrica would "transform" into Jem by touching her earrings and whispering, "Showtime, Synergy!" This was actually a slight subversion of the trope, however, as this wasn't a magic incantation; the earrings enabled her to communicate with the advanced computer system called Synergy, and "Showtime" was the code to tell Synergy to project the computerized hologram which changed Jerrica's appearance into that of Jem. (Synergy could be contacted in the same manner to project other holograms, usually with more explicit commands.)
There was also an equivalent "power down" phrase: "Show's over, Synergy."
The segment "Arabian Knights" from The Banana Splits had the sorcerer Bez transform into a different creature by proclaiming, "Size of a... (dog, elephant, cow, what-have-you)!"
Teamo Supremo's transformation sequence, which had all three of the kids jumping with Brenda's skipping rope, was always triggered by Crandall saying, "Rope me, Brenda!" (obviously not in the way shown here, though one wonders if he ever wanted it that way).
In Defenders Of The Earth, the Phantom would activate his super-strength by chanting "By jungle law, the Ghost Who Walks calls forth the power of ten tigers." His transformation sequence would then show... varying numbers of tiger heads passing into his body.
In W.I.T.C.H., the team transforms when leader Will holds up the Heart of Kandrakar and calls out "Guardians Unite!", then each girl calling out their element (Fire! Water! Earth! Air!). Will, being the one bestowed with "What Kind of Lame Power Is Heart, Anyway?" goes through three different phases throughout the two seasons: in Season One, she was first up and just GRUNTED; the first half of Season 2, the grunt was replaced with "With Heart!"; when she FINALLY gained her element in the second half of Season 2, she's shunted to the end, but says "Quintessence!". It's also revealed that this goes the same for ALL Guardians, as Nerissa and the members of C.H.Y.K.N. say this when they transform with the Seal of Nerissa.
"Guardians Unite" was an invention of the animated series, as the comics only had the girls naming their powers (except for Will). Also, in most other countries, the translation of the phrase is a simple straight translation. The most notable (if not only) exception is the French dub, which uses "Cristallisation" instead (even though the show was animated in France).
And in the comics, after "New Powers" the four girls call their element, then Will call "The power to unite them". Could be a problem if she had to do an individual transformation.
The Secret Scouts in Dinosaucers would make use of their Rings of Power by saying, "Secret Scouts ring, power up!"
The Iron Man cartoon of the 90's had this. When Tony needed the armor he was currently wearing to be something else, he'd call the other armor by name, and his chassis would simply change accordingly. This was a way to integrate the vast variations of Iron Man armor from the comics.
Shazam: Captain Marvel can apparently weaponise his transformation sequence, if his appearance in Justice League is anything to go by. While battlingSuperman, he caught Supes in a Bear Hug, called out his transformation phrase, and the bolt of lightning that would normally have transformed him back into Billy Batson instead struck Supes for damage.
In Batman: The Brave and the Bold, he would kill Starro, the season's Big Bad, by this manner, getting under him and saying "Shazam" and letting the lightning do the rest. However, the Faceless Hunter, Starro's herald, would use the stolen powers of the captured Bwana Beast to fuse Starro's body and its smaller star creatures into a massive conglomerate that he controlled, and that couldn't be stopped so easily.
This is an adaptation of a tactic used at least twice in Silver Age DC comics. After Dr Sivana resurrected Black Adam, the latter villain was fighting with Captain Marvel and called down the magic lightning, but used his super-speed to dodge it so that it hit Cap, transforming him into Billy. Later, in a JLA/JSA crossover, Superman had been driven into a murderous rage by red kryptonite, so Cap taunted him into attacking. Just before the two heroes collided, Cap said the secret word and the magic lightning struck, not only transforming him into Billy, but also clearing Superman's head — just as well, because Billy was falling out of the sky!
Later adapted to Kingdom Come, where Captain Marvel used this tactic against Superman ( Billy/Cap was Brainwashed and Crazy), also using super-speed to dodge the lightning and make it hurt Superman. The combat in Justice League Unlimited animated series mentioned above is more likely a Mythology Gag to this KC one, which, in turn, is a mythology gag to the Silver Age ones.
Double Dragon has "For might!" "For right!" "We are Double Dragon!"
To turn into SheZow, the owner of She Zow ring must say, "You Go Girl!". To change back, the ring owner must say, "She-Yeah!"
