Maybe they're an Intrepid Reporter who believes Information Wants to Be Free. Maybe they're a Hunter of Monsters who believes that monsters won't be able to hide once they are known. Or maybe they just want to be able to use some magic or alien technology to help people. No matter what, their goal remains simple: Make sure everyone knows the secret.
This is usually more complicated than it sounds. There are government organizations, if not worse, dedicated to keeping the masquerade, and who aren't above taking drastic measures to deal with people who learn too much about the secret world. It usually takes more than just a few werewolves on YouTube to get people to believe. Poking the problem too much can easily get you killed. And that's assuming the person is one of the good guys. Many plots revolve around trying to keep the villain from murdering people as part of their plan to unmasque the world.
- In Mahoromatic the Human Aliens were doing this deliberately by sending harmless drone UFOs to buzz airplanes and cities. Their goal was to avoid a complete panic when they finally revealed themselves.
- This is Chao's goal during the Mahorafest arc in Mahou Sensei Negima!, and she succeeds in one timeline. Negi does the same thing at the end of the manga, but under slower and more controlled circumstances.
- The plot of Mononoke Sharing revolves around seeing whether or not yokai should reveal their existence to humanity and assimilate into society, using the test of five yokai living in an apartment with a Token Human. The epilogue shows that the test was a success, with yokai and humans now living together.
- In Rosario + Vampire, this is what Kaneshiro Hokuto is working towards. Because of his immense hatred for both humanity and monsterkind, he plans to reveal the existence of monsters to the world so that both sides will panic and try to wipe each other out.
- Rosario Vampire: Brightest Darkness: Hokuto decides to pull this in an effort to convince Moka that his nihilism is justified and that humans and monsters could never peacefully co-exist.
- In Sluagh, the Masquerade is already seriously cracking in Ireland, where wizards are openly working for the militias. And this is the ultimate goal of Diabhal Dubh, who wants to take over Ireland by building up a united muggle and magical army.
- The ultimate goal for the protagonists in the Deryni works. People know Deryni exist, but they're so feared (and consequently persecuted) that they must conceal themselves. Not that everyone agrees upon methods and timing. Very, very gradually, through a combination of heroic examples and royal fiat, the masks come off.
- In Methuselah's Children the long-lived Howard families vote to break their masquerade. This quickly proves to be a mistake as the short-lived masses refuse to believe that their longevity is hereditary and start imprisoning Howards to try and force them to reveal their "secret".
- Rivers of London: Getting magic out in the open and setting up a proper official system of regulating it and magical creatures is Lady Tyburn's goal. With her at the head of that system naturally. She is rather miffed when Peter starts proving an obstacle to that goal, setting up new covert arrangements and shoring up the faltering Masquerade. Ironically Peter believes in preparing for the end of the masquerade too, he just doesn't think someone as authoritarian and autocratic as Tyburn ought to be in charge of it; especially since their first interaction was Tyburn trying to mindrape him into being her servant.
- Tuck Everlasting: The Man in the Yellow Coat is one of the very few people aware that the Tucks became immortal after drinking from a hidden spring. He is almost more interested in marketing the water than in immortality for himself.
- This is Haruri Borzak's wish for the Snowfield Holy Grail in Fate/strange fake. To take revenge upon the magical society that took everything from her people, she wants to use the Grail to render all forms of concealing magecraft useless.
- A villainous example from The Dresden Files. Ethniu the Last Titan, the Big Bad of the Peace Talks/Battle Ground Two-Part Episode wants to wage war on humanity on such a large scale that The Masquerade will be utterly ruined, so that the supernatural races can dominate the humans openly as they did in ancient times. Since the other supernatural races fear that humanity's greater numbers and technological superiority would allow them to win in the long run, they're all scared shitless by this plan and unite against her.
- Grimm: The survival of the wesen depends on humans not knowing of their existence. This is so critical that showing your Game Face in public is punishable by death. Across the series, two separate groups try to break the masquerade unsuccessfully.
- In season 4, the wesenreing, a wesen purity group that opposes wesen-human or inter-wesen species relationships, starts to woge in public and murders "impure" wesens leaving their shifted corpses in public for the "normals" to find. This forces the wesen council to approach Nick, the grimm (an enhanced human tasked with policing and, if necessary, executing rogue wesen) to put down the hate group which has infiltrated the local police departments in order to target "undesirable" wesen. Nick and his gang of friends are able to wipe out the Portland chapter of the wesenrein.
- Season 6 feature Black Claw, a wesen supremacy group that wanted to wipe out humans and reclaim the earth for wesen kind. The plot got convoluted as the writers raced to wrap up the series long arc after the show failed to be renewed for another season, but ended up with both Black Claw and its opposition, human-friendly Hadrian's Wall completely wiped out and the normal world none the wiser.
- Supernatural: For the most part, the Winchester brothers think people are better off not knowing about the things that go bump in the night and the people they save agree. But in the season 2 episode "Nightshifter", bank security guard Ronald Resnick is convinced that the people committing crimes around town are half-man, half-robot mandroids and the public deserves to know the truth. The brothers are split with one arguing they should tell Ronald he's right and the other arguing that knowing the truth will get him killed. In the end, the truth does get him killed but it's because he holds up a bank in order to attract the attention of the FBI and demand an investigation. However, the FBI just sees a crazy man with guns and hostages and kills him in order to save the hostages. The episode ends with the masquerade still firmly in place and the FBI now determined to arrest the Winchester brothers for their part in the bank robbery.
- In Hunter: The Vigil, Network Zero is an organization of Hunters who aim to collect, analyze, and disseminate evidence of the New World of Darkness' supernatural forces. One of its factions, the "Army of Truth", even hijacks data feeds and spreads viral memes to force people to pay attention, though they don't get much traction with people who aren't already aware of the Masquerade.
- In The Matrix Online, the Machines nominally honour their agreement from The Matrix Revolutions to allow people to enter the real world, but most humans remain ignorant or disbelieving of the simulated reality of the Matrix. An increasingly frustrated Morpheus becomes known as a terrorist for planting "code bombs" that temporarily reveal the Matrix code, forcing the Awful Truth on people who aren't ready to accept it.
- RWBY: General Ironwood plots to do this as of Volume 7. With Ozpin no longer around to guide them, Ironwood feels a new plan is needed: rather than continue a Secret War, he's going to out Salem's existence to all of Remnant and unite the world against her. Although the heroes were very angry with Ozpin's secrecy, their response to Ironwood's plan is to display similar misgivings to Ozpin himself over the potential chaos and panic revealing the truth to the world might cause. There's also an additional problem the heroes discovered in that Salem has Complete Immortality, which means they can't kill her, and that Ozpin was well aware of this fact but kept it hidden from all of his allies, which ultimately led Ozpin to hide himself deep in the mind of his most recent reincarnated life. The heroes were understandably reluctant to inform Ironwood about these revelations and kept it hidden from him when he shared his own plans.
- El Goonish Shive:
- This is Pandora's long-term goal, which she starts by appearing on the evening news in her Creepy Child form. She then proceeds to empower random people with magic, so as to cause as much chaos as possible in a way the Masquerade cannot cover up. While the former only brings weirdness hunters to town, the latter proves effective, especially when the superheroes started showing up to save people. In fact, it was so effective that the head of the local MIB office essentially gave up, admitting on live television that it was all real. Pandora's reasons for doing all this are simple: Her son, Raven, is an elf, a half-immortal who is not allowed to interfere in situations that do not directly involve magic. Therefore, she is creating a world where everything directly involves magic. That, and she's bored.
- Tedd also wants to unmasque the world, but he's doing it in a far more responsible way. The reason the masquerade is in place is because most people have little to no magic resistance. Unveiling magic would be like handing out guns to random people when most people can't use either guns or bulletproof vests. Tedd, as a Magitek Mad Scientist, decides to create technology that will allow the average person to use magic to an extent that it is safe to remove the masquerade.
- It turns out that neither of these have any chance of working. Magic itself is intelligent and wants to be used—but not by everyone. If too many people learn how to obtain magic, magic will change the way that it works for humans to render all that moot. Pandora's plan got close enough to working that magic came within a hair's breadth of changing things, but did send an avatar to inform Pandora (in the most convoluted way possible) of what was going on. Pandora agreed to fix things, but not before yelling about "no good cheating magic" and insisting that Tedd had the right idea.
- The comic is a weird case; according to the MIB head (after he revealed the existence of magic on live television), the big secret was never that magic existed. The secret that everyone is taking so much trouble to conceal is that magic is easy. EGS has a very forgiving and intuitive magic system, with spells reflecting the person that acquires them under most circumstances... meaning that the real monsters usually get the most destructive and powerful spells.
- Ultimately, though Pandora gave up on her goal, she succeeded in hijacking her own reincarnation to force every Immortal onto the physical plane to cast an Aberration destroying spell. That spell manifested as a wave of light that was visible for miles around, and since every Immortal was forced to cast it, well, the masquerade on magic's existence was completely and utterly shattered. The Will of Magic outright states that this one event was enough to do it on its own even without previous incidents. And when the Will of Magic consulted Tedd, Arthur and Van on what to do, Tedd successfully convinces it that it is impossible to remain secret with modern technology, so it decided that it will go along with its reveal.