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- Used several times in the first Sailor Moon's anime:
- In the first season, Jadeite got this for repeatedly failing Queen Beryl. Later, the people who once were the Seven Demons get kidnapped and imprisoned by either Kunzite or the Brainwashed and Crazy Mamoru into the Black Crystal that pinpointed their "heritages", but are released by the end of the episode.
- In the final fight against Kaorinite, Tuxedo Mask also gets sealed in a glass crystal by Senishenta. It also happened to him in the R movie, with Fiore as the culprit. In the first case, he has to be unsealed by the Senshi; in the second, he breaks out when Fiore tortures Moon via sucking her out of her Life Energy almost to death.
- In the second season (plus the manga and Sailor Moon Crystal, Neo Queen Serenity was trapped in a coffin-like crystal during the Bad Future. Subverted: the Queen had been very gravely injured after Taking the Bullet for Chibi-Usa during the invasion of the Black Moon Clan. Her wounds and the Dark Energy inside them caused her to fall in a coma, so the Senshi of said Bad Future encased the Neo Queen in crystal to protect her from any other threats. She's healed and released when Wiseman is defeated.
- Used in the fifth season, when the Inner and Outer Senshi are one-by-one sealed within mirrors by Nehelenia. When Usagi goes "Take Me Instead" and gives Nehelenia a You Are Not Alone speech, the magic weakens and the Senshi are released.
- In Fairy Tail, the mysterious Lumen Histoire turns out to be a crystal containing the body of the titular guild's creator and first Master, Mavis Vermillion.
- Panzer World Galient: After capturing The Hero's mother, Queen Felia, Marder locked her inside a multi-colored glass prison where she remained in suspended animation and placed her in his private chambers as if she was some sort of war trophy. She is aware, but she cannot move, talk or even blink.
- This is Hellmaster Fibrizzo's signature move in Slayers, whether a coffin-sized one on individuals (like the ones he crafted for Gourry, Amelia, Zelgadis, Sylphiel, Martina and Zangulus — and he starts crushing Gourry's to taunt Lina and provoke her into summoning the Lord of Nightmares) or a titanic glacier on an entire city ( like Sylphiel's Doomed Hometown). It was copied by Rezo in the 4th season.
- In Tenchi Muyo!, Washu was trapped in a gem placed inside a closed Pocket Dimension located somewhere in Kagato's Cool Spaceship. When Mihoshi stumbles into said dimension almost by accident and starts fighting a monster inside it, the energy released starts cracking the gem's surface; once the monster somehow becomes Taken for Granite (and just few inches away from poor Mihoshi), Washu is able to break free safely.
- Towards the end of Tenchi in Tokyo, Sasami is abducted by Yuugi, whom she's a Morality Pet for and is locked inside one of these so she won't escape. She's wearing a bracelet with a powerful gemstone (part of the MacGuffin), and when it begins to react to Tenchi and the girls's own shards, it breaks through the big gem and Sasami is saved.
- Pandora in Violinist of Hameln.
- Lisette in 11eyes. Happens to Yuka later, and for some reason, her clothes are also gone.
- Although ice is not usually considered a crystal, Snow of MÄR evokes this trope by encasing herself in ice when she first appears, and the characters, good and evil, don't want to just bust the ice apart, possibly for fear of shattering her as well. They must find a fire ARM to melt the ice instead.
- It's also made quite clear that she isn't preserving her life by doing this, one of the characters notes that they only have a handful of hours to rescue her before she'll die while trapped.
- In the three-tails filler arc from Shippuden, the villain put Hinata in one of these. While the crystal substance was extremely strong, the main problem was getting her out without shattering her if she was even still alive.
- In that same arc, the Anti Villainess Guren's ability is to crystalize anything. This means she can turn people into crystals right down to the cellular level. The only ones known to have escaped from this jutsu are the aforementioned Hinata (who surrounded herself with a protective chakra cloak) and the Three-Tails (a monster created from chakra). She also can use it for protective purposes, like she did to her protegé and Morality Pet Yuukimaru to keep him safe from her enemies.
- Saint Seiya
- In the Asgard saga, there's an extremely nasty version. The God Warrior of the Megrez Delta star, Alberich, can summon the "Amethyst Sealed" —an attack that sends shards of amethyst flying from his body and towards the enemy, encasing and sealing him/her (hence the name) in a shell of translucent gemstone. If they're not freed, victims will be robbed of their Life Energy, and eventually become skeletons trapped in amethyst. And the only way to really free them is to kill Alberich himself. That almost happens to Marin and later Seiya and Hyoga, and Shiryu has to save them both via fighting Alberich to the death.
- Also happens to Hyoga in the anime, but this is an ice prison rather than a mineral one. Shiryu, Seiya and Shun find him, then Shiryu uses one of the Twelve Weapons from the Libra Cloth to unseal Hyoga's body before he actually freezes to death.
- Happens a second time to Hyoga during his rematch with Aquarius Camus, this time complete with Heroic Willpower and Dramatic Shattering.
- In the Blue Exorcist Anime this happens to Rin, when he blows his cover.
- Lorelei in Saber Marionette J while trapped in the Mesopotamia.
- Kaname Kuran from Vampire Knight is seen in one of these in the Grand Finale, after he destroys his own heart and falls in a coma. It's actually a case of ice made by Aidou with the intention of protecting his comatose body.
- Happened to Asuna Kagurazaka in Mahou Sensei Negima!, during her days as a Barrier Maiden.
- In Attack on Titan Annie "Female Titan" Leonhart invokes the trope and seals herself in one when the Survey Corps capture her, so they won't be able to interrogate her.
- The Noozles has the Crystal Place at the center of Koala Walla Land, which is filled with colored orbs that permanently entrap anyone who touches them with bare hands, such as Sandy's grandfather.
- A frequent tool used byvillains in Sgt. Frog to nerf Angol Mois.
- Meliodas from The Seven Deadly Sins briefly gets sealed within a small crystal charm.
- In the Anime version of King of Bandit Jing, the mermaid that Jing is trying to steal is trapped inside a crystal (in the manga, she is merely chained inside the tower).
- In the Johto season of Pokémon, when Ash and Co. take a Journey to the Center of the Mind of the shy Larvitar that Ash has been taking care of, Larvitar's fear of humans due to his Dark and Troubled Past is symbolized by an image of the poor thing encased in crystal. It takes Ash lots of effort to get him to open up.
- In the Yu-Gi-Oh! anime, as the real Malik Ishtar "borrows" Anzu's body to talk to his sister Ishizu, he's seen trapped in one of these as a symbol of Dark Malik's Split-Personality Takeover, which also forces him to see his other self's evil deeds while unable to stop him.
- Justice League of America: During the JLA Grant Morrison run, this happened to Triumph. He was a hero who turned bad due to a run of unbelievably crappy luck.
- Green Lantern: This is one of the methods the Star Sapphires (Violet Lanterns) use to recruit new members. The crystals they encase people in brainwash them to become more compassionate and compel them to join the Star Sapphires. Curiously, though they've trapped men before, all have either broken free or were rescued by someone else.
- In Krypton No More, Superman, Supergirl and Krypto are defeated by an alien force known as the J'ai and thrown in a cell which is a hollow, multi-faceted crystal sphere.
- In War World alien overlord Mongul kidnaps Lois Lane, Jimmy Olsen and another of Superman's friends and puts them inside a crystal cube.
- Supergirl: After capturing super-villain Reactron, Supergirl and Flamebird shrank him and put inside a crystal shard in order to transport him to New Krypton where he would be tried.
- Cristalline in X-Men 2099 can produce crystals out of thin air. Apparently she can structure them to allow air through, so when she is in good mood her enemies will be trapped in a block of crystal but relatively unharmed.
- The first book in the Franco-Belgian Comics series Chroniques des pays de Markal is about a stone with this power.
- The Ogdru-Jahad, ever present Bigger Bad of the Mignolaverse, are sealed away in hunks of cloudy yellowish crystal floating through an interdimensional void, only able to interact with the world through telepathic communication with anybody stupid and/or evil enough to help them break out and cause The End of the World as We Know It.
- Sonic the Hedgehog: Sonic, Tails, and Knuckles imprison the immortal Mammoth Mogul inside a Chaos Emerald.
- Disney published a huge, multi-series crossover that centered on this in its Disney Adventures magazine. A powerful sorcerer was imprisoned in a crystal and his power placed in the gem's mount. The sorcerer is desperate to reunite with the mount and can possess vehicles and electronics to do it. The series involved were DuckTales (1987), Darkwing Duck, TaleSpin, Goof Troop, and Chip 'n Dale Rescue Rangers.
- Judge Dredd: Whenever they're not wreaking havoc throughout Mega-City One, the Dark Judges tend to be contained in special crystal orbs designed to hold their spirit forms. The crystals in turn are kept in a Tailor-Made Prison.
- Contest of Champions: In the third series, contestants that refuse to take part are held in crystals (which seem to correspond to the colour of the Infinity Gems, for whatever reason). Normally, it's impossible to escape them, but Ares manages. Once The Maestro takes over the show, he throws these out in favour of using cells.
- In issue 2 of Shutter, three rats trap Kate in one.
- Sassette as a real young female Smurfling was put into suspended animation inside a crystal in Empath: The Luckiest Smurf and awakened 100 years later when all her fellow Smurfs were now adults and now had three young Smurflings become her friends. Only she was awakened without any memory of who she was before she was imprisoned in the crystal, so Papa Smurf told her that she was created with the same formula that was used to create Smurfette. A few years later in "Little Sister Smurf Lost", a female wraith named Avengelica awakened Sassette's true memories as she was the one who imprisoned the Smurfling in the first place, to be used as a pawn for getting even with all males in the world.
- Hefty, Toughette, Baby, Babette, and the Smurflings find themselves in one during the events of "How Things Smurf" in The Smurfette Village series.
- The Ogdru Jahad in the Hellboy film. Hellboy shatters the ice-like crystals, partially releasing them.
- Zod & co. from Superman II, who got thrown into the original Phantom Zone.
- For the evil Djinn in the first two Wishmaster movies (at least), a gem was basically used in place of the more traditional bottle.
- Godzilla Junior is trapped in a crystal by the titular alien villain in Godzilla VS Space Godzilla.
- One of the two Zelda installments in the Nintendo Adventure Books, The Crystal Trap, had Link being the victim of this due to a curse laid by Ganon on the Triforce pieces (which got Link on a technicality since the Triforce of Courage was in his heart). The reader followed the plot of Zelda on a Fetch Quest trying to find the three items that would work together to free him from the curse before it became permanent — one of the "failure" endings depicted the crystal turning to stone with Link still inside.
- Prior to the The Elenium Queen Elhana is sealed in a diamond. This was done not to imprison but to save her. She had been fatally poisoned but the diamond slowed her bodily functions and thus the damage done to her body, giving Sparhawk time to find a cure.
- In Servant of the Dragon, third book in David Drake's The Lord of the Isles epic fantasy series, Cashel is served by the demon Krias, who is trapped in a large gem mounted on a ring.
- In the Conan the Barbarian story "The Tower of the Elephant" an evil sorcerer is trapped inside a plate-sized ruby, to suffer eternal torment from an extradimensional being he had previously trapped and tormented for power and knowledge.
- One of the Magic Kingdom of Landover books had Ben trapped in a crystal.
- In Dark Lord of Derkholm, Mr. Chesney keeps the demon that allows him to send Pilgrim Parties to Derk's world trapped inside what resembles a clear paperweight. He ultimately ends up taking the demon's place in the final step of his well-deserved Humiliation Conga.
- The Keystones of The Seventh Tower act as this.
- In Wielding a Red Sword, the Incarnation of War finds a beautiful princess trapped in a smooth sphere. He is only able to enter the sphere as a soul (not with his body) but when he does so, he finds it is a trap by Satan. Satan then brings both of them into Hell.
- In the Dresden Files, Demonreach is a prison in which each cell is a crystal. Each crystal holds an Eldritch Abomination. The tunnels holding the crystals go on for miles.
- The Stormlight Archive: Spren imprisoned in gemstones power the Magitek fabrials. Of course, since most spren are non-sentient and even the sentient ones don't think like humans do, it's unclear if they care or even notice when they are imprisoned. This is used intentionally in Oathbringer when an ancient, powerful Voidspren is trapped inside a gigantic ruby.
- In Smallville, the Fortress of Solitude had been used to imprison Clark in Blue and Persona and Davis in Bride.
- Olaf the troll was trapped in a crystal in Buffy the Vampire Slayer until Willow broke it.
- A variation of this appears in the Doctor Who-episode "Heaven Sent". While the prison itself is a Big Labyrinthine Building, the exit is behind a twenty-foot thick wall of Azbantium, a crystalline substance 400 times tougher than diamond.
- Played for Laughs in an episode of Sabrina the Teenage Witch. Sabrina hopes to find a love spell to use on Harvey, but Aunt Zelda explains that love is far too powerful and precious to try to control. Aunt Hilda then chimes in and adds that while you can't make someone fall in love with you, you can imprison them in a piece of jewelry for a few centuries and hope they'll change their mind. She then shows off her ring, which contains a man from the Middle Ages who remarks that Hilda is "starting to grow on him." The scenario is really disturbing upon further thought.
- Dungeons & Dragons has a spell called Trap The Soul. When cast, it imprisons the target's soul inside of a gem.
- There's also Magic Jar, where you willingly transfer your soul into a gem or crystal, then attempt to possess another living creature who comes near.
- Dungeons & Dragons 1st/2nd Edition had a spell called Binding. One variation of the spell was Minimus Containment, which shrank a creature and held it inside a gem.
- A demilich could drain the souls out of its victims' bodies and store them in its gemstone teeth.
- C2 The Ghost Tower of Inverness. The Soul Gem could drain the souls of creatures and store them in itself.
- "The Garden of Nefaron" in Dragon magazine #53. The evil psionicist Malakon had his mind trapped within his own psychogem.
- Magic: The Gathering: In the Mirage storyline, Mangara was trapped in amber, as depicted on the card Amber Prison.
- Toa in BIONICLE can create or destroy absurdly strong Protodermis by using their powers as a team - even Makuta Teridax can't break free of a prison made of it.
- Chrono Cross: Schala turns up during the final battle inside a crystal, which is actually the backside of the Time Devourer. Freeing Schala without killing her is how you unlock the Golden Ending.
- In the DS remake of Chrono Trigger, this same awaits Schala when you face the bonus boss, Dream Devourer. Additionally, one of the exiles from Zeal, Melchior, is trapped in a crystal on the Mountain of Woe's peak.
- Mega Man X2 features Crystal Snail and his weapon, the Crystal Hunter. Getting hit by it will trap you in crystal, and you have to mash buttons to get out. When you beat him and get his weapon, you can do the same to weaker enemies and use the trapped enemy as an Improvised Platform. And if you dash into them, they shatter into pieces.
- The Arcane Warrior whose soul was trapped within a gem for thousands of years in Dragon Age comes to mind.
- In The Legend of Spyro trilogy, Spyro, Cynder, and Sparx are trapped in a gem between the second and third games.
- In the first game of the original Spyro the Dragon series, most of the characters were (depending on whether you read the manual or play the game) either sealed in crystal or turned into crystal statues.
- Sonic Adventure, Perfect Chaos was released from the Master emerald.
- Krystal in Star Fox Adventures .
- The Legend of Zelda:
- Towards the end of Ocarina of Time, Princess Zelda is imprisoned in a crystal as seen in the page picture.
- In A Link To The Past, this was the the fate of the seven maidens when they entered the Dark World, as they were too pure to change form and thus became imprisoned in crystal instead.
- Din in Oracle of Seasons is trapped inside one (and used as a shield) by Onox. Hitting the crystal with your sword makes you take damage, so use the Rod of Seasons instead.
- Like in A Link to the Past, the six Maidens and Zelda are enjeweled again in The Legend of Zelda: Four Swords Adventures.
- In Skyward Sword, Zelda does this willingly to prevent the end of the world.
- The Unholy Crystal boss in Splatterhouse 2, which contains the soul of Jennifer.
- The Elder Scrolls series has Soul Gems, magical crystals which can be used to trap the souls of living things after using a Soul Trap spell. The gems typically range from Petty to Grand, with more powerful creatures requiring larger Soul Gems. Additionally, Black Soul Gems are made from Grand Soul Gems, and allow for the trapping of "black" sapient souls (like those of Men, Mer, and the Beast Races. Their use is considered one of the darkest of The Dark Arts in-universe. Once trapped, the souls can be used to enchant items, permanently imbuing them with magical abilities, as well as to recharge already enchanted items. Azura's Star is a legendary artifact associated with the Daedric Prince Azura. Azura's Star can is not destroyed during the enchanting process like standard Soul Gems, allowing it to be refilled and reused.
- Starting in Soul Calibur IV, Soul Calibur starts using this trick in quite a few character endings where it defeats Soul Edge. The biggest example is Patroklos, who's in the receiving end after the spirit of Soul Calibur turns on him.
- Something of a recurring theme in Valkyrie Profile and Valkyrie Profile 2 Silmeria; apart from the Valkyrie's ability to temporarily trap monsters in a crystal (ice for Lenneth, light for Silmeria), Silmeria, Lenneth and Brahms all end up in crystals during VP 1 and 2. Rather like this, really.◊
- World of Warcraft:
- Myzrael is a princess (elemental princess, note) trapped in a crystal in a quest.
- A few enemies and bosses, notably some crystal giants, can do this to you. A few ice using bosses can imprison you in an ice block as well.
- Warlocks can trap the souls of their enemies in crystals in order to fuel their stronger spells. And it happens to the warlock himself in this episode of "Chronicle of the Annoying Quest"
- In the musical Edutainment Game Julliard Music Adventure, the player must rescue a Queen who is trapped in an amulet.
- Final Fantasy VII:
- Five years before the game begins, Cloud confronts Sephiroth at the Nibelheim power reactor when the latter returns to retrieve Jenova. Thanks to Cloud mortally wounding him, Sephiroth tumbled off the catwalk and fell into the Mako pool below the reactor, eventually winding up in the Lifestream. In the present, Cloud and his party chase "Sephiroth" across the planet, unaware it is Jenova imitating his appearance; the real Sephiroth is frozen in a block of Mako, having drifted to the North Crater during his travels.
- Sephiroth's mother, Lucrecia Crescent, is also frozen in crystal in a hidden cave on the Western Continent. But she's there by choice in atonement for her willing participation in Hojo's experiments.
- Final Fantasy XIII: Once branded a L'Cie by the Fal'Cie, Crystal Stasis is the reward for fulfilling their focus, in contrast to failing and becoming a Cie'th (i.e. transforming into a twisted, zombie-like horror). But this also means the Fal'cie can reawaken them and use them as puppets as much as they want. This is what happened with Serah and Dajh, and Vanille and Fang were originally Pulse L'Cie brought to Cocoon and awakened by Barthandelus as his Unwitting Pawns. Ultimately, this also happens to Lightning, Snow, Sazh and Hope by slaying Orphan, but soon awaken as a result of Vanille and Fang's double Deus ex Machina Heroic Sacrifice.
- The entire plot of Kingdom of Loathing comes about because the Naughty Sorceress imprismed King Ralph. In a prism.
- Super Mario Galaxy and Super Mario Galaxy 2 had several Toads and Lumas trapped in crystals (possibly by Bowser), and Mario/Luigi had to spin said crystals to set them free. There are also Goombas trapped in crystals as well. Makes players wonder why Bowser wanted to trap his own minions in crystals along with his enemies.
- In RuneScape, the goal of the "Merlin's Crystal" quest is to rescue Merlin, who has been trapped inside a crystal◊ by Morgan le Faye.
- An Archaeology item of ancient amber in World of Warcraft allows characters to do this, but only to themselves. As one might imagine, it's not a particularly useful item.
- In Warcraft III, a Soul Gem shows up in the last mission of the Orc campaign; it's used to imprison Grom Hellscream so he can be captured without killing him.
- The Big Bad does this to your entire party at the end of Breath of Fire II. The Hero breaks out of it, but this angers the Big Bad and he shatters the remaining crystals. (The Hero's 11th-Hour Superpower brings them Back from the Dead soon after.)
- In Realm of the Mad God, Mysterious Crystals are scattered throughout the Realm, literally begging you to smash them. They are actually the prisons of bosses that summon demon PONEHS.
- Several enemies are trapped inside crystals in the Crystal Caves -level of MediEvil.
- In Dark Souls, Dusk of Oolacile was trapped for centuries inside a Crystal Golem. Defeating the Golem frees her and allows you to summon her later so she can teach you a few nifty spells.
- League of Legends champion Nocturne is imprisoned in a nexus shard when not fighting on the rift. Despite this, he's constantly slashing away at the barriers between him and the outside world, causing his powers to have a slight influence around the nexus shard.
- Brave Fencer Musashi features several dozen binchotite crystals scattered across the game world. Each one contains a kidnapped member of the palace's staff, and can only be broken by Lumina. Not only will the freed palace staff be helpful later on, but breaking a crystal will increase your maximum MP.
- In Magicka 2, Crystal Prison is, interestingly, where playable Wizards end up after saving the child of prophecy, imprisoned by the child in question. The inside is a The Matrix-inspired white space with some furniture.
- Starcraft: While not exactly crystal, the Arbiter's Stasis ability uses the aesthetic, trapping units in geodesic prisons for a short time.
- Bubble Witch saga:
- Stella clears up stages by popping magical, colorful bubbles with her Magic Wand. These bubbles contain things like eyes, tentacles, worms, etc. inside
- Some stages have living animals trapped inside big transparent bubbles (frogs, rats, birds, etc.), which must be popped to release them and fill the requirements to pass.
- In Bubble Witch 3, the evil cat Wilbur captures not only small owls, but faeries inside the bubbles themselves. This includes the Fairy Queen, whom he locks away inside a special bubble that he carries around right before the game starts. If Stella pops the fairy bubbles, the now-free faeries will pop random empty bubbles to help her clear the stage.
- In the first Kingdom Hearts game, six of the seven Princesses of Heart (namely, Aurora, Belle, Cinderella, Alice, Jasmine, and Snow White) are sealed in crystalline prisons, with odd black thorns wrapped around their bodies. It seems like the crystals may serve a practical purpose, as they allow Maleficent to channel the Princesses' hearts to reveal a giant Keyhole flooded with evil power. Or they may have just needed to hold them in place to do it, who knows?
- In the Skin Horse arc "Borrowers," Tip finds the maintenance staff trapped inside the living crystal entities in the basement. He gets captured too, but since the crystals are sensitive to noise, they release him when he threatens to start singing Madonna.
- In Snarlbear, the elf city of Monochrome is trapped in crystals by Queen Cassie.
- Rubirules in TOME has the ability to create these, which he uses to imprison Kajet and the Dragon Bug during the climax of the series.
- One of these contains the soul robot of Maureen Miller in The Adventure Zone: Balance's Crystal Kingdom arc. It was created by the Philosopher's Stone, which then proceeded to go out of control and turn the entire building into the titular Crystal Kingdom. Ironically, Maureen is the one who created her prison. When she died, she saw the Hunger, breaking her mind. Her son Lucas tried to bring her back but failed because of the damage what she saw did. By putting herself in the prison, she prevented what she saw from taking her over... but it's pretty much impossible to control a Grand Relic, so she almost ended the world in the process.
- Adventure Time
- At the end of her episode, Tree Trunks ends up inside a gem, (gem-apple, really). She seems quite fond of it.
- The Lich is encased in amber as of the beginning of "Mortal Folly".
- The Citadel uses these to imprison cosmic criminals. It doesn't work so well on the Lich.
- During the two-part finale of Storm Hawks, many sky knights are captured and imprisoned in a giant crystal.
- In ThunderCats (2011) this is Parodied in "Omens Part Two," when The Lizard Army uses a giant geode as a Trojan Horse to enter Thundera, having been stuck waiting in there for two days, not counting the trip to Thundera. One complains to his general about the smell after being freed.
- Care Bears Movie II: A New Generation had the characters trapped in a crystal chandelier by Dark Heart.
- Adventures of the Galaxy Rangers: A Psychocrypt victim will have his Life Energy in one crystal, and his body entombed in a second. Merging the two will free the person.
- In Aladdin: The Series, recurring villain Mozenrath loves these—the plots of two episodes revolve around him trying to entomb the Genie in one.
- Samurai Jack: the titular monster from "Jack and the Lava Monster" is actually a viking warrior that Aku imprisoned in crystal thousands of years ago. Either through magic or sheer force of will, he worked out a way to manipulate the stone and form a rock body before creating a Death Course in the hopes of drawing in a mighty warrior to give him an honorable death.
- SheZow: SheZap shrinks Guy and traps him inside a Glam Rock in "SheZap is Whack".
- Rhombulus of Star vs. the Forces of Evil does this to anyone he considers to be evil. Most of these are monsters, with the only human-looking one being Eclipsa, one of Star's ancestors who is rumored to be The Dreaded.
- The Powerpuff Girls (2016). Princess Morebucks unsurprisingly desires to be a Powerpuff Girl and devises a complex plan to achieve this goal. She indirectly isolates Buttercup from her sisters and has a monster pummel them repeatedly until they agree to make her a Powerpuff Girl "Now that there's an opening". Once they comply, she makes the monster leave and tosses them a Jewelry box. The crystal inside becomes a heart shaped prison for the both of them. After Bubbles and Blossom say that she can be a Powerpuff Girl she plans to destroy them so she can be the ONLY Powerpuff Girl.
- The hazmat robots — and, often, the human characters — in Detentionaire wield guns that can trap their targets in green crystals.
- Amber is the fossil resin of ancient trees. Since resin evolved as a way of trapping insects and other small animals (to protect the tree from the damage they do), we naturally find a lot of insects, spiders, etc., trapped in amber.