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Weakened by the Light

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Light is a powerful thing. Some enemies, especially living shadows and vampires, are weakened by it, if not outright destroyed. The reason is simple: Light Is Good + Good Hurts Evil + Dark Is Evil = Light Hurts Evil.

Sunlight seems to be particularly potent, which gives Cue the Sun a whole new meaning for such nocturnal nasties. Works fond of Doing In the Wizard often explain this as an aversion to ultraviolet light.

The psychology behind this trope is that humans are very reliant on sight, so we feel extremely vulnerable in the dark. See Dark Is Evil for the general association of evil things with darkness.

If the author is not careful, this can overlap with Weaksauce Weakness, or at least Kryptonite Is Everywhere. May be counteracted with a Kryptonite-Proof Suit. This might be one of the reasons it's Grim Up North — the longer nights give sunlight-averse creatures more time to hunt.


Sub-Trope of Supernatural Repellent. See also Holy Burns Evil and Suicide by Sunlight. Contrast Cross-Melting Aura. Often mixed with Light 'em Up. Not to be confused with Blinded by the Light, a much less severe and more mundane form of weaponizing light, and Day Hurts Dark-Adjusted Eyes, a natural reaction to daylight that carries no moral connotations.


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    Anime & Manga 
  • A variation of this trope appears in Fullmetal Alchemist. Pride, the shadow homunculus, isn't generally hurt by light; in fact, he is unable to use his powers without a light source. However, if the light becomes too bright (for example, the light from a flash bomb) his shadows will disintegrate. Ironically enough, he is also incapable of using his powers in total darkness and is thus completely helpless without a light source. This weakness is exploited on two occasions, though neither incident is successful for very long.
  • Pointedly averted with Mahou Sensei Negima! and its resident vampire Evangeline, who is not harmed by sunlight. It does however make her somewhat sleepy, so she's often seen with a parasol anyway. One of her many nicknames is "The High Daylight Walker", emphasizing this trait.
  • Used in Gintama against Housen, The Night King. The Yato in general are weakened by light — it's why they all carry umbrellas — but Housen spent years out of the sunlight. When exposed to it for the first time in ages, it kills him fairly quickly.
  • In One Piece, people who've had their shadows stolen by Gecko Moria disintegrate in sunlight.
  • Ouran High School Host Club had several episodes of this with Nekozawa.
  • Vampire Hunter D:
    • Sunlight isn't immediately fatal to vampires. Rather, exposure to more than a few seconds of direct sunlight causes them to catch fire, burning painfully so long as they are exposed. Heroic Willpower is invoked if a vampire stays in sunlight to do something important, as is a vampiric Healing Factor if they make it back to shade. However, only the High Nobility are capable of even trying this. Most vampires are entirely comatose during the day, even if they remain underground.
    • In the 1985 film Count Magnus Lee sends Rei Ginsei a candle. Its light paralyzes any being with vampire blood in its veins. Greco Roman steals it and uses it against the Count's daughter Lamika. Rei Ginsei gets it back and uses it against D (successfully) and Count Magnus Lee (not so successfully).
    • In addition, dhampyrs (half-vampires) suffer from a condition called Sunlight Syndrome approximately every 6 months. During this time, they suffer from sudden exhaustion, fever, and weariness and are forced to retire for several days in order to recover. In D's case, thanks to his extraordinary physiology, he experiences Sunlight Syndrome less often, every 5 years instead. The treatment for Sunlight Syndrome is for the dhampyr to rest buried beneath the ground with just their head sticking out.
  • JoJo's Bizarre Adventure:
    • Obviously, the vampires, who are shattered by sunlight (and hamon, which emulates sunlight); the inference seems to be that vampirism fills you to the brim with vital energy, to the point that excess energy is like inflating an overinflated balloon. The Pillar Men, progenitors of the vampires, also suffered this, but only to the degree of being petrified while bathed in sunlight (or UV lamps), and reverting afterwards. Hamon can kill them but it requires that you transfer the Ripple energy into them, be it with rope or oiled up weapons, which is much easier said than done. When Kars uses the Stone Mask to turn into the Ultimate Being, he becomes not only invincible to the sun but also able to use the Ripple with absurd power.
    • The Stand Black Sabbath from part 5 is also like this, on account of actually being a shadow. Lots of light=inability for shadows to exist, so...
  • The Batman Hakki from Yaiba is scorched by the sunlight and screams in pain when exposed to it. Oddly, he's fine while wearing sunglasses.
  • In Shiki, vampires who meet the sunlight directly catch on fire and burn to death. However, there's also Tatsumi (and later Natsuno too) who subvert this, due to belonging to a rare species of vampires who can survive under the sunlight. However, in everything else, they're exactly like the others.
  • Espada #9 Aaroniero Arruruerie from Bleach cannot stand sunlight and can't maintain or perform his shape-shifting in the light.
  • Van Von Hunter parodies this twice in the same arc. First, a vampire proclaims its invincibility since the moon is up—and doesn't burn until after it's reminded that moonlight is reflected sunlight. Then, the title character tries to distract another vampire until sunrise, and takes so long doing so that the sun sets again.
  • In Saint Seiya: The Lost Canvas, Hades is severely damaged by sunlight as long as it's enough to overpower his defenses.
  • In Is This a Zombie?, Ayumu, being a zombie, can't go out in the sunlight or his body will desiccate. This weakness is negated while he's wearing Haruna's Magical Girl outfit.
  • In Monster Rancher, when Moo used the Final Gate to remerge with his original body, because the process wasn't done properly (i.e. not using a magic stone), his body was vulnerable to any form of light. During a fight with the Searchers, the sun rose and burned him, forcing him to retreat. He was then confined to life support until the process was completed properly.
  • Downplayed in Interviews with Monster Girls. Vampires in that universe do have a low tolerance to light and heat, but that's at worst uncomfortable.
  • In Ushio and Tora, the (fan-suggested) Youkai Mountain Fish (Yamagyou) is an unstoppable underground-dwelling behemoth with a taste for human flesh, but has a crippling weakness: exposure to sunlight, even minimal, will cause a strange chain reaction in his body that makes him explode. Oddly enough, the Mountain Fish itself seemingly doesn't fear nor tries to avoid sunlight.
  • Pokémon: In "Ghost of Maiden's Peak", Gastly seems unstoppable, but when the sun rises, he says he can't stand the sunlight and retreats.

    Comic Books 
  • Greymalkin, one of the supporting X-Men characters, has Super Strength when he was in darkness.
  • The Darkness is Made of Evil with all kinds of darkness-based powers, and it can't stand to be in bright light, making it a Logical Weakness for the beast. The setting also features the Angelus, a creature of pure light, the Arch-Enemy of the Darkness.
  • DC Universe
    • When the character Obsidian is in shadow form, light can cause him great pain and even unconsciousness.
    • According to the cover of Detective Comics #284, Batman was once changed into a "Negative Man" who was weakened and destroyed by light.
    • Batman himself employed this tactic to defeat Azrael and reclaim the mantle at the end of the Knightfall trilogy.
    • Night Girl was a member of the Legion of Substitute Heroes, and, in some continuities, later a member of the Legion of Super-Heroes. Her gimmick was that she had Super Strength, but only in the dark. Turn on a lamp, and she's normal.
    • The "Octopus Plants" which attacked Wonder Woman, the Holliday Girls and Steve Trevor in an issue of Sensation Comics wither and die in sunlight.
  • In the New 52, Ultraman is weakened by sunlight; as shown in Forever Evil. To counter this, he creates a solar eclipse so he can go about during the day.
  • Downplayed with Morbius the Living Vampire. Since he's not a real vampire, sunlight will not reduce him to dust. But he does have to avoid the sun due to his extremely pale skin, or he'll quickly suffer burns which could lead to melanoma, and is at risk of retina damage.

    Fan Works 
  • The monsters under Calvin's bed in Calvin and Hobbes: The Series vanish with light. Except for Jark, because he's partly absorbed Calvin's DNA. It doesn't last, though.
  • In Hope Comes to Brockton Bay this is the downside of Shadow Stalker's new powers and she is finally killed by very powerful lamps.
  • In Nosflutteratu, Fluttershy explains that sunlight weakens vampires preventing them from using abilities like transforming into a bat.
  • Principal Celestia Hunts the Undead: Ghasts are a form of undead that are particularly vulnerable to light - full exposure is almost always fatal in a very short time, unless they can get out of it quickly enough.
  • The Life and Times of a Winning Pony: Direct sunlight interferes with necromantic energy, and as a result undead creatures are weakened (or in some cases outright destroyed) by being exposed to daylight or daylight-based spells.
  • Princess of the Blacks: Between the vernal and the autumnal equinoxes, while the days are longer than the nights, black magic is weakened and white magic is strengthened. And on the summer solstice itself, black mages are rendered feverish and comatose from sunrise to sunset.
    • The same applies in reverse to white mages, who are helpless on the winter solstice.

    Films — Animation 
  • Fantasia: the Black God Chernabog is interrupted when light shines on him, causing him to wince and shield his eyes.
  • Dracula and his daughter Mavis from Hotel Transylvania only go outside at night because the sun will cause them to turn to dust and disintegrate.
  • The Owls from Rock-A-Doodle hate any kind of light, even something minuscule like a flashlight. Sunlight is enough to actual strip the Grand Duke of his powers and reduces him smaller than a mouse.

    Films — Live-Action 
  • Gremlins: Strong light will hurt Mogwai and Gremlins, sunlight will kill them. Subverted in one case in Gremlins 2: The New Batch when the Gremlins raid a genetics lab and the Brain-Gremlin injects the Bat-Gremlin with an anti-UV potion so he can go and wreck havoc in the city. Fortunately, he didn't think to use it on any of his other brothers...
  • Nosferatu is usually credited as the origin of the idea that sunlight kills vampires.
  • Pitch Black: the alien monsters are burned by light. Additionally, Riddick's eyeshine treatment leaves him easily blinded by bright lights.
  • Blade Trilogy:
    • In Blade, the vampires have some kind of realism — no religious material is involved, but they're allergic to garlic and silver, and get severely burned by sunlight. So Blade tortures a vampire with a UV lamp, eventually burning him to death.
    • In Blade II, Blade's new sidekick builds UV grenades.
    • In Blade: Trinity, Abigal Whistler uses a bat'leth-like weapon that has a UV beam instead of a blade.
  • Mr. Freeze at the end of Batman & Robin. It wasn't entirely the sunlight, as much as it was the warmth of the sun's rays after his freeze suit had malfunctioned.
  • In Underworld, vampires are sensitive to ultraviolet light. The protagonist therefore uses ultraviolet light producing ammo to great effect.
  • Legend (1985). At the beginning Darkness says "Sunshine is my destroyer." Near the end we see what he means: when he's hit by the reflected light of the sun he's Blown Across the Room as if it were a giant bullet hitting him.
  • Taken Up to Eleven in Daybreakers, where the light actually burns the vampires alive.
  • Fright Night (1985). When Charley and Peter Vincent confront the vampire Jerry Dandrige in the cellar where his coffin is located, they destroy him by ripping the coverings off the windows and allowing the sunlight inside.
  • Fright Night (2011): Jerry exploits this to Kick the Dog. He allows Charley to "rescue" one of the girls he'd kidnapped and already converted, just so he could see the look of horror on the boy's face as she disintegrated into ashes.
  • In the British parody horror B-movie I Bought a Vampire Motorcycle, the titular monster is eventually killed by being lured into a gymnasium and trapped in a circle of tanning beds.
  • Near Dark: Depending on the strength the daylight and the length of exposure, vampires will either smoke, burn, or explode.
  • Attack of the Eye Creatures: The titular creatures can be taken down by ordinary car headlamps. A camera flash was enough to instantly vaporize one.
  • Game of Death: Kareem Abdul Jabbar's character loses significant strength when Bruce Lee smashes the windows and lets the sunlight hit Jabbar's lizard eyes.
  • In Halloweentown the villain's powers are at their strongest in darkened areas like the movie theater. The radiance from Merlin's Talisman destroys him.
  • Richard Matheson's novel I Am Legend has three official adaptations; The Last Man on Earth with Vincent Price, The Omega Man with Charlton Heston and I Am Legend with Will Smith. In all the Last of His Kind homo sapien has to fight hordes of vampire-like creatures that are harm by sunlight and bright lights.
  • Cailban in Logan is burnt by sunlight requiring him to wear a hat and googles whenever he’s outside, Cailban himself lampshades it liking himself to Nosferatu at one point. Donald Pierce has a particularly cruel Kick the Dog moment where he forces Cailban into some sunlight as torture.
  • Rolli – Amazing Tales: When the High Priest is forced to enter the Rölli Forest from the Trashers' collapsing lair, his face starts deteriorating. He says this is because the light and purity of the forest are detrimental to evil creatures such as him. He claims that this will be remedied once the Trashers are revigorated and the forest destroyed through pollution, but he's killed before this claim can be put to the test.
  • Boy Eats Girl: Averted. During the Zombie Apocalypse, Cheryl briefly thinks that all they have to do is wait until morning, only to be reminded that it's vampires, not zombies, who are harmed by sunlight.

  • In the Coldfire Trilogy, dark fae is (according to the Hunter, the only human who has ever been able to harness it) fragile enough to be weakened by a candle. However, in utter darkness it is powerful enough to stave off death itself, which is how the Hunter has cheated death for centuries.
  • In Companions of the Night, sunlight kills vampires in an extremely painful manner, and it is not instantaneous. This kind of death is so excruciating that when Ethan thinks he’s about to die that way, he begs Kerry to shoot him before he starts frying.
  • H. P. Lovecraft's Cthulhu Mythos stories:
    • In the The Haunter of the Dark, the titular being (an avatar of Nyarlathotep) has an extreme aversion to light. Any light will harm it and strong enough light will destroy it. In the end it is destroyed by a flash of lightning.
    • In The Dream-Quest of Unknown Kadath, the creatures known as ghasts are killed by bright light such as sunlight.
  • Alison Sinclair's Darkborn trilogy focuses around two races divided by an ancient curse: the Lightborn, who cannot tolerate the dark, and the Darkborn, who are fatally burned by light, except for firelight (they are blind and operate via an inherent sonar ability). Notably most of the main viewpoint characters are Darkborn.
  • Discworld:
    • Vampires follow this trope, except for the ones in Carpe Jugulum which temporarily train themselves to be immune. Granny Weatherwax later undoes this though.
    • The rather Lovecraftian creature in the old temple in The Colour of Magic also suffers from this.
    • Trolls don't get weakened by light, but in many places the heat of day makes them dumb, and in some cases, like Klatch, almost catatonic. Trolls "turning to stone in daylight" is a misunderstanding of both this and the fact trolls are already made of stone.
  • Bram Stoker's Dracula averts or at least downplays this: Dracula is weak only at sunup and sundown. Being in sunlight has no direct harmful affect on him (he's seen approaching Lucy before the sun goes down), though he does suffer from Shapeshifter Mode Lock during daytime. However since he's weak at sunup and sundown they use this to great effect when they open his coffin just as the sun sets.
  • In The Dresden Files, magic itself seems weakened by sunlight: Spells and wards that aren't constantly maintained tend only to last until the next sunrise. Ironically, Harry notes that this is not because sunlight is in itself purifying, but rather because dawn is a powerful symbol of new beginnings. Standing magic isn't weakened by light itself, but by the start of the day. Sunlight also damages or annoys several supernatural creatures for more traditional reasons.
    • The Red Court vampires get hurt by sunlight; Harry hits Bianca with a handkerchief full of stored sunlight and it burns through her meat sack to reveal the bat-thing beneath.
    • The most powerful Reds are immune to this so long as they stay in human form; in giant-demon-bat-from-hell form they're still vulnerable to it.
    • Black Court vampires are forced to fall dormant during the day (whether or not they're harmed at all by actual exposure to sunlight isn't made clear). The more powerful ones can still be active during this time, but their powers are somewhat weakened.
    • White Court vampires, on the other hand, avert this outright; they're never shown to experience any discomfort from daylight (probably because physically, they're humans who happen to have very hungry demons piggybacking on their souls, as opposed to the blatantly inhuman other two courts).
    • Sunlight, by its nature as a force that disrupts magic, will destroy ghosts who are not in "shelter" (such as their graves) when daytime arrives. Harry learns this the hard way in Ghost Story.
  • In the Fighting Fantasy Gamebooks, Balthus Dire is a third-generation Sorcerous Overlord over the local Mordor, whose family is so utterly evil that they have developed a lethal vulnerability to sunlight normally suffered only by The Undead.
  • In The Folk Keeper, the Folk are repelled by light, including sunlight, starlight, and candlelight.
  • In Fortunately, the Milk, the wumpires are not keen on daylight, and with good reason.
  • In Forgotten Realms Legacy of the Drow series, this is what undoes and defeats the Drow Army on the surface during the climatic battle of Mithral Hall. Because their eyes are sensitive to bright light, when the night ends and the sun begins to raise exposing many of them to it for the first time they are left flaying blindly and they are beaten back.
  • In the first Goosebumps book, Welcome to Dead House, the zombie mutant vampires of Dark Falls are susceptible to sunlight. They can go out during the day, but it makes them weak and direct sunlight will harm or kill them. As a consequence, they have allowed the trees of the town to overgrow, making the town feel overcast all the time. At the end of the book, when they are trying to eat Josh and Amanda Benson's parents, Josh and Amanda push over a big tree blocking the sun from shining directly on the townspeople, causing them to die. It doesn't permanently kill them, though.
  • In Harry Potter, Harry speculates Dementors dislike sunlight which is why his fugitive Godfather Sirius is hiding in warmer climates, supplementary material confirms this adding Dementors don’t appear in the tropics. This also might explain why Dementors create mist whenever they go and are more commonly seen at night.
  • Richard Matheson's novel I Am Legend is about a Zombie Apocalypse with the entire human race, but one individual, turn into mutant vampire-like creatures that hate sunlight.
  • Inverted by Lamplight, in which the un-named creatures preying on the residents of Crooksfield aren't deterred by light at all - in fact they need it in order to take physical form.
  • In The Nekropolis Archives, the majority of Darkfolk find sunlight in some way uncomfortable, with vampires being the most severely affected. Thus, for the comfort of its residents, Nekropolis's light comes from Umbriel, the shadowsun, which perpetually casts dim twilight. The Sunstone, a magical artifact capable of producing sunlight, is treated like an Artifact of Doom because so many Darkfolk could be harmed by its light.
  • The Dead in the Old Kingdom books are weakened by direct sunlight, and prolonged exposure will eventually destroy them. As such, they're typically either nocturnal, dwell underground, or only come out in daytime under cloud cover, though Kerrigor knows a spell to shroud his minions in an incredibly thick and opaque fog if he has to move them during the day. Note also that some necromancers will send their Dead minions (particularly weak ones such as Hands or gore-crows) out in sunlight anyway, to do as much damage as they can via Zerg Rush before they get burned away — after all, the Dead are many.
  • In the President's Vampire series, vampires are burned by direct sunlight, and even when they're sheltered from it, they're automatically weaker during the day than at night.
  • In The Red Tent, Zilpah stays in her tent most of the time to avoid sunlight. Unlike most examples, she is not a supernatural being of any kind, or even particularly evil; the reason she avoids sunlight is that she suffers from migraines.
  • In Shadow of the Conqueror, the Shade require darkness to use most of their powers, leaving them vulnerable to both sunlight and Magitek lighting devices. The glowing sunstones also inflict terrible pain on contact.
  • In The Shattered Kingdoms, the Norlander people have this attribute. However, they're still close enough to standard humans to be biologically compatible, and they're not necessarily evil (although some of the people they conquer might tell you otherwise). At least one character of Norlander birth has managed to adapt to the sun well enough.
  • Hearteater from Tailchaser's Song has spent centuries deep under the ground and as a result the sun burns him. His goal is to get rid of the sun and take over the world. Hearteater's minions are also hurt by the sun. They only go above ground at night.
  • In J. R. R. Tolkien's Middle-earth, the sun and moon are creations and symbols of the forces of good, and the evil servants of the Dark Lords generally have trouble with sunlight.
    • Orcs are weakened and frightened by strong light and especially sunlight. They usually march under the cover of night, or under supernatural cloud-cover. On two occasions during The Lord of the Rings series, the Orcs are pushed back by the appearance of a powerful light (though, admittedly, usually accompanied by some good ol' fashioned swords).
    • Subverting this was the chief advantage of the Uruk-hai; unlike other orcs, they were part-human and thus could go about during the day without any problems.
    • In The Hobbit, trolls are turned to stone by sunlight. Apparently by the end of the War of the Ring, Sauron had overcome this weakness with the creation of the Olog-hai.
    • The Nazgûl
      • The fear that radiates from them is weakened during the day, particularly at noon. Everything is less scary by the light of day.
      • They don't see the world of daylight normally, but the presence of living creatures casts shadows in their minds. This is prevented (making it impossible to see them) by the light of the noonday sun.
    • Shelob gets burned by the light of Eärendil's star, a Silmaril containing the purest and holiest light remaining in Middle-earth. Indeed the three Silmarilli are the ultimate expression of this trope in Tolkien's Arda: Not only is the mere sight of them too much for most evil creatures, but they are so holy that their touch horribly burns evil creatures and people.
    • Subverted in The Silmarillion by Shelob's hideous mother Ungoliantë, a spider-shaped thing of darkness who greedily ate every speck of light she encountered — including the Two Trees of Valinor.
    • After millennia of being corrupted by the One Ring (not to mention living in a cave), Gollum couldn't stand sunlight, and hated moonlight as well.
  • In the Towers Trilogy, night walkers are zombie-like creatures which are pained by daylight. They bury themselves underground during the day, and emerge to stalk the streets at night.
  • The Warhammer 40,000 background book Xenology features an alien species known as the Umbra, which appear as black spheres that can control shadows and give them physical form, usually in the form of bladed limbs they use for offense. They don't like bright light, but using it against them is risky as light generates more shadows they can use to attack you. An inquisitor kills one by placing it in a room with bright lights on all sides so that no shadows will be generated.
  • Sunshine: Vampires in this setting are harmed by light. The exact degree of their vulnerability seems to be proportionate to the amount of evil they have done: Constance (the closest thing to a Friendly Neighborhood Vampire we ever see) is burned by the sun but can endure moonlight and starlight, while Beauregard (old, powerful, and particularly depraved even for a vampire) can't even speak words related to light.

    Live-Action TV 
  • Automan's title character himself is not adversely affected by sunlight, but his physical form takes so much electrical power to maintain that he normally can do it only during offpeak hours of the local electrical grid, which is predominately nighttime.
  • Buffy the Vampire Slayer and sister series Angel vampires have a strange version of this. Direct sunlight will almost instantly immolate them, but they are portrayed as perfectly fine operating during the day as long as they remain in the shade. They can even move around in sunlight while covering themselves up with a jacket or hoodie - though if that cover gets pulled off, they'll fry immediately.
  • In Castle, a case involving vampire fetishists uncovers an obsessively fixated "vampire" whose skin burns when it makes contact with light. Turns out he has an exceptionally rare skin condition.
  • Doctor Who:
    • "The Vampires of Venice": The "vampires" are weak to light because they're actually Fish People. The young women they're converting develop this even before the transformation is complete — Isabella is captured during the escape because she flinches away from a ray of sunlight hitting a door.
    • "The Ghost Monument" has the Remnants, killer cloth developed as weapons that are inactive in the daytime.
  • In the Farscape episode "Crackers Don't Matter", Moya's crew is warned that "lower species" sometimes experience impaired judgment from the light of the pulsars they are traveling through. The trope is subverted when Crichton realizes that T'raltixx is causing their symptoms, not the pulsars. T'raltixx himself is an inversion, drawing his power from light and planning to use Moya to provide the light his people need to become a large-scale threat.
  • The title character in Fireman originally came from the Earth's core, so exposure to sunlight in his powered form for more than three minutes could kill him. He even had a light that worked like a "Color Timer" that alerted him.
  • The Goosebumps episode "Welcome to Dead House". As in the novel it's adapted from, the (kind of) undead townsfolk of Dark Falls are cannibals who are weakened by daylight, and can be killed by direct sunlight. Instead of pushing a tree over to expose the sun, the Bensons smash out a window inside of a house during The Siege after the townspeople have managed to get inside of the house, causing their undead neighbors to disintegrate into Empty Piles of Clothing. Unlike the book, it appears as if this does permanently kill them, and the Twist Ending is something completely different.
  • The Orville: The antagonist species, the Krill, die if exposed to strong enough UV light. This is why they wear helmets on Earth-like worlds.
  • The giant winged serpent in the Sanctuary episode "The Depths" is intolerant of sunlight. This is what kicks off the plot initially. Remembering this helps Magnus and Will sneak past it later in the episode.
  • Smallville, Bizarro is a sort of opposite to Clark Kent. Kryptonite makes him stronger and sunlight makes him weaker.
  • Star Trek: The Original Series episode "Operation: Annihilate!" The parasites that infected the colonists on the planet Deneva are destroyed by bright light.
  • True Blood: Vampires who meet the sunlight directly explode into flames. In the season 1 finale, Bill demonstrates the extent to which it weakens them by going out during the day to save Sookie from Rene (although it's sort of a Senseless Sacrifice since Sam had already saved her). Sookie finds him burning under the sunlight a few moments later and she and Sam get him under cover again. Older vampires are even more susceptible; the 2000-year-old Godric Disappears into Light within seconds of exposure.
  • Speaking of Ultraman, the Underground people from Episode 22 died when a captured Hayata transformed into Ultraman in their presence, and the light from the transformation was too much for them.
  • In an episode of The X-Files, one of the Monsters of the Week was explained as someone suffering from a similar skin condition. In truth, no, he was a freakin' vampire.

    Myths & Religion 
  • Vampires traditionally avoided sunlight, though the idea that it would rapidly kill them is a modern invention.
  • In Norse mythology, Thor tricks the dark elf Alvis to stay up answering questions until the sun rises and kills him.
  • In Scandinavian folklore trolls either turn to stone or explode when exposed to sunlight.

    Tabletop Games 
  • Dungeons & Dragons:
    • Original D&D Supplement IV Gods, Demi-Gods & Heroes. In the Hyborean mythos (Robert E. Howard's Conan stories), the brylukas (a combination of human, animal and demon) are struck blind for a while by strong light.
    • In 1st Edition, exposure to sunlight renders a Chaotic Evil vampire powerless and kill it in 1 turn (10 minutes). In 2nd edition, sunlight kills vampires in 1 round (1 minute).
    • 2nd Edition Player's Option: Skills & Power supplement
      • When a Shadow Mage specialty wizard cast a spell while in bright daylight or a Continual Light spell, opponents receive a +2 on saving throws versus the spell.
      • Deep Dwarves are a non-Evil example. They take a -1 penalty to all rolls when in sunlight or in the area of a Continual Light spell.
    • 2nd Edition Complete Psionics Handbook
      • When a psionic using the Feel Light power rolls a 20 on their Power Check, they become overly sensitive to light and take 1 Hit Point per minute spent in light for 1-10 minutes.
      • When the Hear Light power is used and the psionic rolls a Power Check of 20, being in bright light causes them to become deaf.
    • Both 1st and 2nd Edition
      • Lawful Evil spectres are made powerless by daylight and both shades and Chaotic Evil shadow demons are much weaker (and easier to kill) in bright light.
      • Goblins and Orcs (both Lawful Evil) are at -1 "to hit" in sunlight.
    • Basic D&D adventure IM3 The Best of Intentions: one plane's inhabitants are sentient bubbles who are destroyed if ordinary light falls on them.
    • Lawful Evil Duergar and Chaotic Evil Drow are weakened (or dazed) by sunlight, until 4th edition anyway. In 1st and 2nd Edition, when duergar or drow are in sunlight (or the equivalent, such as a Continual Light spell) they lose the bonus to their chance to surprise opponents, have a -2 penalty to Dexterity and "to hit" rolls, and opponents receive a +2 to saving throws vs. their attacks.
      • Several versions of the game have also stipulated that Drow weapons and armor are damaged by exposure to sunlight, either losing their magical bonuses or disintegrating outright. When the latter rule prevailed, a savvy PC who could summon sunlight via spell or magic item could leave an entire Drow warband seriously impaired and standing around in their underwear.
    • Chaotic Evil Derro are nauseated by sunlight.
    • Myconids are terrified of sunlight; surface-dwellers don't know exactly what it does to them, but they do know that a myconid will die before leaving the Underdark.
    • Chaotic Evil Bodaks take 1 Hit Point of damage per minute they spend in direct sunlight.
    • Master Set DM's Book and D&D Rules Cyclopedia. Nightshades all suffer a penalty of -4 to hit in daylight.
    • Dark Sun Monstrous Compendium Appendix - Terrors of the Desert
      • The hurrum is a small brightly colored beetle that dies if it's exposed to direct sunlight for more than one hour. Too bad it lives on the world of Athas, which is mostly hot, sunny desert.
      • The villichi takes a -1 attack roll penalty and a -1 penalty to all psionic power scores when in direct sunlight.
    • Dark Sun Monstrous Compendium Appendix II - Terrors Beyond Tyr.
      • The undead monster known as the T'liz take a -4 penalty to their attacks rolls in broad daylight.
      • If a DM uses the random undead generation tables, the undead so created can have a sunlight vulnerability that causes 1-6 Hit Points of damage per minute of exposure.
      • Averted by the Shadow Giant, which is damaged by darkness and healed by the light. Wrong Genre Savvy heroes tend to assume the opposite.
    • Deep Gnomes (Aa.k.a. Svirfneblin) are a rare non-Evil example. The 1st Edition Unearthed Arcana supplement says that in bright light their range of vision is reduced to 30 feet and they have a -1 penalty to hit opponents. This was not the case when they originally appeared in the module D2 Shrine of the Kuo-Toa or in the 2nd Edition Monstrous Manual.
    • The Chaotic Evil Kuo-Toa take a -1 penalty to hit in bright light.
    • T1-4 Temple of Elemental Evil. In the room on Level 3 where the PCs fight 6 violet fungi, there are 50 small evil fungi. Any bright light (such as a Light or Continual Light spell) will cause the small fungi to shrivel and die within one minute.
    • 2nd Edition Ravenloft boxed set, Realm of Terror supplement. When a PC performs extremely evil acts they have to make a Powers Check or suffer a punishment. One possible punishment is the character becoming blind whenever they are in normal daylight.
    • Also in Ravenloft, sunlight is even more lethal for drow vampires than it is for normal vampires or drow, vaporizing them instantly. What's worse, even moonlight pains them, and even under a new moon, starlight makes them unable to regenerate.
    • In the 2nd Edition, Lawful Evil mind flayers have perfect darkvision (at good range) but are blinded by light, being completely blinded by brilliant sunlight. Naturally that's why their plots include "putting out the sun".
    • 2nd Edition Advanced D&D Planescape setting, Planes of Chaos boxed set.
      • Asrai are faerie-like female creatures that melt away in direct sunlight, taking 1-4 Hit Points of damage per minute. They originally appeared in a Dragon magazine #191 "Dragon's Bestiary".
      • Fensir are trolls that live in the outer plane of Ysgard. They turn to stone if they remain in sunlight for more than a minute.
      • Varrangoin are bats that live in the Abyss. If Light or Continual Light spells are used on them, they take 2 Hit Points of damage per Character Level of the caster and penalties of -2 to their attack rolls and saving throws.
    • 2nd Edition Al-Qadim setting, Arabian Adventures supplement. The Water Form spell changes the recipient into elemental water. While in that form, they take 1 Hit Point of damage per minute they spend in direct sunlight due to evaporation.
    • 2nd Edition Mystara setting Monstrous Compendium Appendix
      • Darkwings take penalties when in bright light. A Light spell gives them -1 on their attack, damage and morale rolls. A Continual Light spell forces them to make a morale check at -2 or flee. If they make their morale check, they will fight at -2 to attack and damage rolls.
      • The rockhome lizard normally lives underground. They suffer 1-6 Hit Points per hour of being exposed to sunlight.
      • The scamille is a giant (6-10 feet wide) intelligent Blob Monster that can assume the shape of an object. If a Light spell is cast upon it, it loses the ability to form new pseudopods for one combat round and is forced to assume its true form.
    • 2nd Edition The Complete Book of Necromancers. One of the Unholy Compulsions (curses) that can affect a necromancer is being blinded by bright light.
    • Dragon magazine
      • Issue #62, article "The gods of the orcs". The orc deity Shargaas lives in a cave system which is darker than the blackest night. He can see perfectly well in darkness but is completely blinded by sunlight.
      • Issue #191 "The Known World Grimoire". Direct sunlight has the following effects on Chaotic (Chaotic Evil) manscorpions: it blinds them, causes them 5-20 Hit Points of damage per ten seconds of exposure, reduces their Dexterity and Morale to 3, causes them to lose initiative in combat, halves their movement rate, and causes them to take double damage from any attack. After ten minutes of exposure, even if the manscorpion still has Hit Points left it burst into flames and automatically dies.
      • Issue #199 "Dragon's Bestiary". Chaotic Evil Gray Trolls are vulnerable to sunlight: it blinds them (which inflicts hefty combat penalties) and inflicts five Hit Points of damage on them per minute of exposure which cannot be regenerated. If killed by sunlight, the gray troll's body shrivels and is reduced to ashes, forever dead.
      • Issue #218 article "Dragon Dweomers". The spell "Shadow Dragon" causes the dragon that cast it to turn to shadow form, which makes it immune to most attacks. One exception is light-based spells such as Light, Continual Light, Prismatic Spray etc.) which do 1-6 Hit Points of damage per level of the spell for each minute the dragon stays in the spell's area of effect. Full sunlight forces the dragon back to its normal form and renders it helpless for a full minute.
      • Issue #227 article "Dragon's Bestiary: Monsters of the Underdark". If the Darkness Elemental is contacted by a spell that creates magical light (Light, Continual Light, Faerie Fire etc.) there's an explosion that does 1-8 Hit Points of damage per level of the spell to the elemental.
      • Issue #243 article "Destriers of the Planes". The Lesser Charnalbalk can't remain on the Prime Material Plane in daylight - it fades away at sunrise and returns to its rider's location at dusk. The Greater Charnalbalk can exist in daylight but takes a penalty to its armor class and all d20 rolls it makes.
    • Dungeon magazine
      • Issue #19 adventure "The Vanishing Village". The monsters known as "house hunters" dislike sunlight, as it causes them a -2 penalty "to hit".
      • Issue #34 adventure "On Wings of Darkness". The created monsters known as darkenbeasts suffer a -1 to attack rolls in bright light.
      • Issue #35 adventure "Twilight's Last Gleaming". Light spells have a 5% chance per level of the caster to destroy a shadeling, and Continual Light spells have a 10% chance per level of the caster to destroy a shadeling. A Sunray spell (which creates sunlight) used against a shadeling will destroy it automatically.
      • Issue #38 adventure Horror's Harvest. The "comet" (actually a meteor) that falls on the village of Delmunster gives off dangerous radiation. One of its possible effects on living creatures is to make the creature unable to stand daylight, taking 1-4 Hit Points of burn damage for each minute it spends in sunlight.
      • Issue #48 adventure "The Oracle at Sumbar". If a Continual Light spell is used on the sahuagin zombies, they will attack with a -2 penalty. If a Continual Light spell is used to block their path, they will not go through it.
    • White Dwarf magazine
      • Issue #32 adventure "Chaos from Mount Dorren". The pteranodons domesticated by the Cruthite gnomes dislike strong light and suffer a -2 "to hit" penalty in such situations. If they can't escape the bright light, they will panic and suffer a -4 "to hit" penalty.
      • Issue #35 article "Fiend Factory". Dark bats hate light. They fight at -1 "to hit" in sunlight and -2 "to hit" in stronger light.
    • Polyhedron magazine #30, article "Beware the New Golems". The Shadow Golem takes 3-18 Hit Points of damage if it is illuminated by a Continual Light spell and is killed if it is exposed to sunlight for three consecutive minutes.
    • Mayfair Games's AD&D compatible adventure Dragons of Weng T'sen. The Dark Hound is a Chaotic Evil monster that takes damage from light-based spells as if they were fire-causing spells. Thus, a Light spell does 1-6 Hit Points of damage per Character Level of the caster as if the Light spell was a Fireball spell.
  • Shadowrun
    • Awakened creatures (including metahuman variants) could have special allergies such as to sunlight. This could cause penalties to target numbers, pain and even physical damage.
      • In the main rules, creatures with this allergy include the banshee (undead elf), barghest (dog-like), ghouls (humans infected with a magical virus), vampires and wendigo (orks infected with a virus).
      • In the 1st Edition supplement Paranormal Animals of North America the following creatures have this quality: Birdman, Black Annis, Devil Rat, Dour, Dzoo-Noo-Qua, Gabriel Hound, Gloaming Owl, Incubus, Loup-Garou, Piasma, Pricuricu, Shadowhound, Stonebinder and Troglodyte.
    • 1st through 3rd Editions. Shamans of the Bat, Owl and Puma totems have a +2 penalty to all of their magical target numbers while in direct sunlight.
  • Darklings from Changeling: The Lost are humans who were reshaped by the Gentry into nightmares, terrors, and other creatures of twilight. As a result, they take a penalty to using Contracts (magical powers) during the day, one that gets worse if they try it while in direct sunlight.
  • Two main things do aggravated damage to vampires in Vampire: The Masquerade and Vampire: The Requiem: fire, and sunlight. Not only do they hurt like hell, but the mere presence of either can drive the Beast into a state of mortal fear where it hijacks the vampire's body and runs shrieking into the dark.
    • In Requiem, a vampire's actions during daytime are always capped according to their Humanity; the less in touch with their human conscience they are, the harder it is to do anything during the day.
    • In Masquerade, the Followers of Set's clan curse means they are affected by any sufficiently bright light as if it was sunlight. Even the light of the full moon is enough to physically annoy them.
    • Mind's Eye Theater LARP supplement Liber des Goules. One Flaw that can be chosen by ghoul characters is Light Sensitivity. The ghoul takes damage from daylight like a vampire, and even bright non-sunlight causes excruciating pain.
  • Exalted: Charms by the Ebon Dragon — The Shadow of All Things — are weaker or can't function at all in sunlight... of Creation. It works just fine under Hell's green sun. Also, they can't be used to defend against Holy charms.
    • Most Creatures of Death are greatly weakened or outright destroyed by exposure to sunlight.
  • Atlantis: The Lost World generic RPG setting. Cave Trolls are turned to stone by sunlight, and Rock Trolls take 1d6 Hit Points of damage per minute of sun exposure. Vampires can stand the light of day for only a short time, and will then crumble to dust.
  • There are several white cards in Magic: The Gathering that focus on this, often with the art depicting black creatures such as demons.
  • RuneQuest
    • The following creatures are demoralized in daylight: ghouls, some orcs, cave trolls, trollkin and vampires.
    • Cave trolls: damage they take while in sunlight is not healed by their regeneration ability.
    • The shade takes Hit Points of damage each round that it remains in sunlight.
    • Dorastor: Land of Doom. Ghouls lose one Magic Point for each hour they spend in direct sunlight, and it isn't easy for them to regain lost Magic Points.
    • White Dwarf magazine
      • Issue #45, article "Dealing With Demons". Demon wolves must be summoned at night because they are demoralized by daylight. Nightmares are black demon horses that dissolve into mist if sunlight falls upon them.
      • Issue #57 article "For the Blood Is the Life". When exposed to sunlight, vampyrs lose their ability to charm opponents and their immunity to attack by bronze weapons. They also lose two points of CON each round they remain in the sunlight. If their CON reaches zero, they will become inanimate. If a vampyr is in its coffin when the sunlight hits it, it is trapped in the coffin until nightfall.
  • Call of Cthulhu
    • In daylight, a vampire loses all of its special powers.
    • Hunting Horrors are dispelled by daylight, and a strong burst of light can sear one to dust.
    • Masks of Nyarlathotep supplement.
      • The form of Nyarlathotep known as Fly-The-Light or The Haunter of the Dark can't stand light stronger than starlight. A flashlight or torch light does 1-6 Hit Points, the full moon does 2-12 Hit Points, car headlights or street lights do 3-18 Hit Points, and full daylight does 10-60 Hit Points.
      • A Fog-Spawn is driven off by light as strong as (or stronger than) a flashlight. If trapped by bright light or exposed to daylight, it is forced to return to its own plane.
    • Fragments of Fear: the Second Cthulhu Companion. After sixty years of existence, any Servant of Glaaki exposed to strong light (such as daylight) will suffer the Green Death, which causes them to rot away and be destroyed in a few hours.
    • Dreamlands: The creatures known as shades are always enclosed in a sphere of darkness. If enough light is applied to penetrate the darkness, the shade evaporates.
    • Adventure "The Haunted House". The animated corpse of Walter Corbitt takes 1 Hit Point of damage per round in direct sunlight.
    • Magazine The Unspeakable Oath #14/15, adventure "Call of Duty". The priest Antonio Marchesi has a strange affliction. Because of over-exposure to his deity Yog-Sothoth, his skin is very sensitive to light and he takes 1-6 Hit Points of damage per round that he's exposed to sunlight.
  • Champions/Hero System
    • Wrath of the Seven Horsemen adventure
      • The White Crawler Larvae, Elder White Crawler and the Prime take constant damage from bright sunlight and double STUN and BODY damage from light-based attacks.
      • Supervillains: Death takes STUN and BODY damage from light-based attacks, Fear takes double effect from Flash (blinding) attacks, and Dread takes STUN and BODY damage from sunlight.
    • Adventure "V.O.I.C.E. of Doom''. The superhero Black Phantom takes 1.5 times normal effect from Flash (blinding) attacks, and the supervillain Graf Von Grausam takes double normal effect from Flash attacks.
    • The Circle and M.E.T.E.. The vampire Gratz and the new vampires he has created take damage from direct sunlight.
    • The Great Super Villain Contest. The super villain Void takes 2-12 damage from bright light each turn. The supervillainess Shadow Queen takes 1-6 damage each turn from light and double normal STUN and BODY damage from light-based attacks.
    • Enemies. Supervillains: Leech and Frizbe take 1-6 damage per turn from sunlight. Vibron takes double effect from Flash (blinding) attacks.
    • Enemies II. Supervillains: Neutron takes 3-18 damage from Flash (blinding) attacks.
    • Enemies III. The supervillain The Amazing Darkon takes double normal STUN and BODY damage from light-based attacks.
    • Hero System supplement Fantasy Hero Companion. Stone Trolls are turned to stone by sunlight. Common Trolls are blind in direct sunlight. Vampires take 3-18 damage per phase in direct sunlight.
    • White Dwarf magazine #67 adventure "Peking Duck". All of the supervillain Shadow Dancer's Elemental Control - Negative Energy powers don't work in the light. Other of her powers require shadows to be present, and bright light will prevent her from using them. Last, she becomes nauseous in sunlight, which will make it difficult to use the powers she has left.
  • The Blood of Heroes RPG: the superhero Neon Knight and his mount Knight Mayre lose all of their super powers in sunlight.
  • In Nomine: vampires take damage from being in sunlight, and it's possible for celestial beings (angels and demons) to take this effect as a type of Discord.
  • Judges Guild
    • Supplement The Thieves of Fortress Badabaskor. Eackor the Hill Troll will be killed if he's exposed to sunlight.
    • The Dungeoneer
      • Issue #9 "Monster Matrix". Shadow Giants are Chaotic Evil monsters from the Negative Material Plane that are made of living darkness. They take 1-10 Hit Points of damage from a Light spell, 2-20 Hit Points from a Continual Light spell and a Color Spray spell does 2-16 Hit Points.
      • Issue #10 "Monster Matrix". The Loombar is a monster that looks like a 7 foot tall gorilla. It is blinded for 30 minutes if a clerical Light spell is cast upon it.
    • Pegasus magazine #5 article "Potions Perilous". One of the ingredients of a potion of Gaseous Form is the dust left over when a vampire is destroyed. One possible side effect of drinking one of these potions is being unable to bear being in sunlight, the same as a vampire.
  • Rolemaster Shadow World campaign setting
    • Supplement Demons of the Burning Night. Anyone wearing the Helm of Kadaena is at half resistance rolls in sunlight.
    • Supplement Jaiman: Land of Twilight. Stone trolls are turned to stone by sunlight.
  • Mayfair Games
    • Horror game Chill
      • If a Deceiver is forced to stand in direct sunlight for one hour in front of a place dedicated to truth (university, courthouse, etc.), any SAVE envoy can see it in its true form. It cannot hide its true form from them again until it has spent 8 hours in darkness.
      • A Mist Mummy that is trapped in sunlight in its mist form for more than 1 minute is destroyed.
      • The Carpathian vampire is destroyed if it spends one minute in sunlight. While it is in sunlight it can only assume its fog mist form and try to flee.
    • Generic supplement Undead. Moonscourges are insane monsters that perform hideous murders. They have no strength or form in daylight and must wait for nightfall to act.
  • Lejendary Adventures
    • The Peccant takes continuous damage from sunlight, but only if it's naked.
    • Normal Bruholak
      • Semi-Materialized: Takes continuous serious damage from sunlight
      • Normal form: Can't go out in daylight.
    • Volitant Bruholak
      • Semi-Materialized: Exposure to bright equal to daylight forces it to flee to its burrow.
      • Normal form: Takes continuous serious damage from sunlight.
    • If the Nosferatu is exposed to any light as strong as sunlight, it takes minor continuous damage and changes back to its true form.
    • In full daylight an Apparition is powerless. In bright light it can't drain its victim's abilities.
    • In full daylight a Ghost is powerless. In bright light it can't possess a victim.
    • If a Shadowling is in light strong enough to dispel shadows, its Vampiric Draining of Life Energy is severely reduced.
    • Trolls turn to stone in direct sunlight.
    • Urls take continuous moderate damage while in direct sunlight.
  • Chaosium's supplement All the Worlds' Monsters. The silver shadow monster takes 3-9 Hit Points of damage from strong light.
  • Chaosium's supplement All the Worlds' Monsters Volume III
    • The Basic 1st level Demon hates sunlight. if exposed to it the demon must return to the Underworld.
    • The Tarrahook's eyes are weak and it is blind in bright light, attacking with a -4 penalty the first melee turn and at -2 thereafter.
    • The Vamplock is an Our Vampires Are Different: a vampire with the innate ability to use magic. It is not harmed by the sun but does lose all of its magical powers in sunlight.
  • Earthdawn. In full sunlight or the equivalent ghoul Attack and Damage steps are at -2.
  • Fantasy Games Unlimited's Aftermath!. Vampires are human beings mutated by biological agents or radiation. New vampires' eyes are sensitive to light, and once they are fully changed they are blind in normal light (they can see normally if wearing sunglasses).
  • Classic Traveller adventure Darthanon Queen. The Dyson monster is randomly created. It can have the Vulnerability of taking 1d6 damage from intense light.
  • In the Fighting Fantasy gamebook Citadel Of Chaos, one of the options of killing the Big Bad Balthus Dire is by reaching the windows and tearing down the heavy curtains covering them. Dire, as a black sorceror, is deadly vulnerable to daylight, and will drop dead on the spot.
  • Carcosa: Weird Science-Fantasy Horror Setting: One possible mutation is Adverse to Sunlight, which causes the victim to take -1 to "to hit" rolls and saving throws in sunlight.
  • Hollow Earth Expedition supplement Mysteries of the Hollow Earth. The Flaw of Albinism causes anyone who has it to take one point of non-lethal damage per hour they spend in direct sunlight.
  • The Serpent Islands generic RPG supplement
    • If Cave Trolls are exposed to full sunlight they will be permanently turned to stone.
    • Vamen (humanoid bat-like creatures) fight and make saving throws at a -1 penalty in sunlight or any light as bright as sunlight.
  • Hackmaster. In 4th Edition the drow (Always Chaotic Evil elves) were based on 1st and 2nd Edition Advanced Dungeons & Dragons, but there was a difference: instead of multiple specific penalties, drow get a simple -1 penalty to all rolls in bright light (bright daylight and Light/Continual Light spells).
  • White Wolf magazine #44 article "Gargoyles by Night...Life", which introduces the new Gargoyle race for the NightLife game. Sunlight causes the skin of Gargoyles to petrify (turn to stone), immobilizing them until night falls again.
  • Villains & Vigilantes
    • Adventure Organized Crimes. The supervillainess Black Empress takes double damage from light-based attacks.
    • Adventure Devil's Domain. The Pit Fiend takes triple normal damage from light based attacks, can be blinded by any light-producing attack on a special hit, and a blinding flash attack only requires one hit to blind it.
  • Arduin RPG, The Compleat Arduin Book 2: Resources
    • Nightmares can regenerate all damage they take at a rate of three Hit Points per melee round except that caused by light-based attacks. They can only regenerate light-based damage on the Ethereal Plane and only at a rate of one Hit Point per hour.
    • Banshees can't stand sunlight and flee from any kind of light produced by priest magic.
    • The Boogie Man undead can regenerate all types of damage except that caused by light-based attacks.
    • Shadows take double damage from all light-based attacks.
    • Direct sunlight hurts the eyes of Vampyres and can cause blindness. After 11-20 melee rounds of exposure the Vampyre will go into a coma. After several more minutes in the light the Vampyre will suffer Rapid Aging to its true age and will crumble into dust if it's older than its maximum lifespan.
  • Gamma World
    • While in bright light, a mutant with the Dark Dependency mutational defect is nearly blinded and takes 1-8 Hit Points of damage per four hours of exposure.
    • Polyhedron magazine #18 article "Kobolds and Robots and Mutants with Wings, These Are a Few of My Favorite Things". Kobalts are the Gamma World version of the Dungeons & Dragons kobold. They have a -2 penalty to hit in direct sunlight.
  • The Fantasy Trip. In his Word of God errata for the system in The Space Gamer magazine #29, Steve Jackson said that the reason that slimes live underground is that they die if exposed to daylight.
  • Space Gamer magazine #74 article "Roleplaying Count Dracula". If Dracula is in direct sunlight for 30 seconds or more, he will be turned into a grey powder. If the sunlight is indirect (e.g. reflected by a mirror, inside a room with a window that leads outside, etc.), each 30 seconds of exposure will cause him to lose 10% of his Hit Points.
  • Star Trek The Roleplaying Game, Polyhedron #32 article "The Kellar: A New Alien Race". While in bright daylight, a Kellar's Dex is reduced by 10, it takes a penalty of +15 to its attack rolls and the flash of a bright explosion will blind it for 1-10 turns. If it wears protective glasses, it takes no penalties from blight light and is blinded for half the normal time by explosions.
  • Princess: The Hopeful: Unsurprisingly, The All-Consuming Darkness and powers derived from it don't do well with bright light.

    Video Games 
  • The Immortals from Boktai are all harmed by sunlight. You can harm and even kill enemies (and one boss) by luring them under skylights, and to kill immortals once and for all you have to use a machine that zaps them with amplified beams of light.
    • Of course, this creates a huge problem for you in the sequel when Django himself becomes a vampire. You still need sunlight to charge your MP, but the sun burns you if you stand in it to recharge.
  • The "Phantom" boss in Chasm: The Rift is killed by luring him into the light after activating three switches. The manual lampshades this by hinting that he is "dying to see the light."
  • Luigi's Mansion: most ghosts must be hit by Luigi's flashlight in order to expose their hearts to be sucked up.
    • The ghosts in Dark Moon can handle Luigi's flashlight just fine, but Elvin Gadd designed a Strobulb which provides a potent flash to disable them. The ghosts respond with a few items to shield themselves, which must be lowered or otherwise removed before they can be zapped and vacuumed.
  • Alan Wake: Wake must shine his flashlight on the Taken (humans who've been possessed by the Dark Presence) in order to weaken the shadows enveloping them and make them vulnerable to his bullets. Sufficiently bright light (like flashbang grenades or the flaregun) will destroy the Taken outright.
  • Gears of War: Kryll have an aversion to light.
  • The Legend of Zelda:
    • Blind the Thief from The Legend of Zelda: A Link to the Past might count. You have to expose him to sunlight to reveal his true form, but it happens before the battle starts.
    • Redeads, Stone Chus and Poes inThe Legend of Zelda: The Wind Waker can be stunned with light. With the latter two, it's the only way to make them vulnerable to conventional attacks.
    • In The Legend of Zelda: Twilight Princess, our light is not only painful for Twili, but (at least in Midna's case, although she was cursed at the time) fatal.
    • The Legend of Zelda: Majora's Mask: while you can defeat the skeleton minibosses normally, they'll just keep reviving over and over unless you shine sunlight on them while they're downed.
    • Playing the Sun's Song in The Legend of Zelda: Ocarina of Time near Redeads will stun them for a while and in Wind Waker, you can stun them for a few seconds by shining light on them with the mirror shield. Also, the Light Arrows make your bow the only weapon able to weaken Ganondorf (which is foreshadowed when you battle Phantom Ganon in the Forest Temple).
    • Stalfos and their variants are often shown as being weak to sunlight. In Ocarina of Time they will only appear at night, and when the sun comes up will immediately burrow back into the ground. In Breath of the Wild a similar thing happens... and if you forcibly keep a stalhorse with you as the sun rises, it will disintegrate in the sunlight.
    • Implied in Wand of Gamelon:
      Ganon: You dare bring light into my lair?! You must die!
  • A dragon boss in Golden Sun: The Lost Age, Serpent, is weakened significantly the more sunlight you reflect onto him by making use of the environment. Without that he is nigh-unbeatable.
    • The various enemies in Dark Dawn are said to suffer from an extreme case of this, in that they can't emerge in lit areas, but when the Grave Eclipse goes down, they come out en masse. And that's just the start...
      • One city is safe during the Eclipse thanks to the Alchemy-powered lights that constantly illuminate it.
  • Played straight with the bosses in LIT, and almost any potential source of light (desktop lamps, cherry bombs, etc.) available in the room may be used.
  • In Metroid Prime 2: Echoes, the Ing must possess other creatures to enter the Light side of Aether, and use of the Light Beam to energize protective fields on Dark Aether can vaporize weaker Ing.
  • Defied in The Witcher saga - a vampire (unhurt by sunlight) gives a lecture about how humans, being helpless in the dark, associate light with hope and by extension attribute light sensitivity to many evil creatures.
  • Played with in AGD Interactive's King's Quest II Fan Remake. An enchantment-breaking talisman requires that sunlight be shined through it onto the person, creature, or item enchanted in order to break the enchantment.
  • At one point in The Lost Crown, Nigel must open a window and let in some sunlight to repel a black, smokey entity that is stalking him. Subverted in that actually defeating the entity takes another step or two, and other ghosts in the game are active in broad daylight.
  • Kingdom Hearts: The Heartless, as beings of darkness, are weakened and destroyed by light. At the end of the first game, Ansem is also defeated by the light of Kingdom Hearts pouring out of the Door to Darkness.
  • Resident Evil 4: Flashbang Grenades can kill Las Plagas instantly. Their light sensitivity is the reason why they don't start emerging from their Ganado hosts until night falls. Though general sunlight immunity has been engineered out of them by the time of the next game, the Flashbangs still work.
  • Resident Evil: Revelations 2: the T-Phobos based B.O.Ws all have an intense allergy to light, allowing you to stun them by shining your flashlight on them. One mid-game boss takes this to the level that your best strategy is to first focus your flashlight on him, then offload bullets into his heart when the light-induced overheating causes it to burst through his chest. Doesn't get much more weakened by the light than that...
  • The final form of Ōkami's boss, Yami, is powered up by darkness and weakened by sunlight. Fortunately, you, as the wolf-goddess Amaterasu, can Cue the Sun.
  • None of the hostile monsters will spawn in Minecraft if there is enough light. In addition, spiders become non-aggressive during sunlight while zombies and skeletons will outright burn.
  • In the Zombie Apocalypse mission in Starcraft II, the Infested Terrans will outright burn if caught out in the sun. (They don't exhibit this property in any other map; Hanson mentions Meinhoff's sun emits a ridiculous amount of dangerous UV energy.) This splits the mission into alternating phases of defense (hole up in bunkers and shoot anything that gets close) and offense (burn the whole map to the ground).
  • In Castlevania II: Simon's Quest, all outdoor creatures are stronger when it is nighttime.
  • The Legacy of Kain series varies from one game to another regarding how light affects vampires. In Blood Omen, Kain is weaker during the day than at night due to the sun's effects, though not outright harmed by it, and light from other sources has no unusual effects. In Soul Reaver, fledgling vampires are killed by exposure to sunlight, but adult vampires are unharmed (with the exception of the Rahabim, who retain their weakness to sunlight into adulthood in exchange for losing their weakness to water). Later games in the series don't mention it one way or the other.
  • In Turok 2, Blind Ones, due to years of living in darkness, are allergic to sunlight, and thus Sunfire Pods kill them instantly.
  • Disgaea's platforming spin-off, Prinny: Can I Really Be the Hero?, takes a spin on this. The game starts during the morning, and as the stages are cleared and the story advances, time passes until it's dark out, with the difficulty gradually increasing, both seen with the stages changing and adding new elements, and the end of stage bosses getting tougher. It's generally believed that weaker demons are out during the daytime to avoid the stronger demons who come out to play at night, though there do seem to be some exceptions.
  • inFAMOUS 2 has the Dunbar Beam, a searchlight with amped up UV powers to fight off the Corrupted. No, they're not just weakened, they spontaneously combust. Even tough creatures like Ravagers fall in three seconds flat thanks to these.
  • During a mission in Mass Effect 2, Shepard and his/her squad fight on a planet orbiting an unstable star. The immense radiation quickly shorts out shields, so Shepard must stay out of the sunlight to maintain a tactical advantage.
  • The Big Bad of Dragonfable the Mysterious Stranger's original form had this weakness. He spent the entire game manipulating Sepulchre, the Shadowscythe, and even the heroes so he could create a more powerful body that wouldn't have this weakness. He recently succeeded by merging with the near-dead Drakath Darkness Dragon (itself a fusion of Drakath, Fluffy the Dracolich and the Ultimate Orb) and became the Ultimate Darkness Dragon. He then summoned every spirit of darkness in the world out of hiding to blanket the world in darkness. Luckily, though, he neglected to create a weakness to the newest element, which is then harnessed by the hero...the Element of Bacon.
  • Mentioned as a gag in Grandia II. Millennia screams about the accursed light of the sun the first time she is seen during the day (The sun had risen while the party was underground). Then she says "Hah! Fooled you, didn't I?".
  • Touhou has vampires Remilia and Flandre Scarlet, who have the standard weakness to sunlight. The plot of the game they're introduced in, Embodiment of Scarlet Devil, is kicked off by Remilia's attempt to block out the sun with a red mist, so that she can go outside whenever she wants. Unlike some stories' vampires, they wouldn't actually be killed by sunlight. It does, however, turn their skin to ash, which is then absorbed into their body and regenerates into new skin. Presumably, the process repeats for as long as they're in the sun.
  • Chaotic units in Battle for Wesnoth are weakened by light; generally this is sunlight provided by the day-night cycle, but some special illuminated hexes (such as lava tiles) and powerful light-magic auras can achieve similar effects.
  • In League of Legends Cho'Gath will sometimes scream "The burns!" when moving. It doesn't seem to slow him down too much, but maybe he'd be even scarier in darkness.
  • The furies of Hakuouki find daylight very uncomfortable and only function well at night. How severely it affects them varies; most are incapable of doing much of anything in daylight, and Sanan, Toudou, and Okita quickly turn nocturnal and spend the daytime resting listlessly if they're awake at all. On the other hand, Determinators Hijikata and Saito steadfastly ignore the discomfort and continue working during the day (and indeed almost stop sleeping entirely); it wears on them and leads to episodes of extremely painful craving for blood, but for the most part they just refuse to give a damn.
    • Experimentation on the "water of life" which creates furies eventually allows Yukimura Kodo to create a strain of fury which functions just fine during the day. Since these furies are made on the Imperial side, this makes life harder for just about everybody.
  • In Heroes of Might and Magic VI Shades of Darkness, Dungeon units have this weakness. They all have the "Blessing of Malassa", which gives them a slight resistance to darkness and a slight weakness to light. While there is a magical reason for it (Malassa is the polar opposite and rival of Elrath the Dragon of Light), it's also partly a Logical Weakness. After living underground for decades, the Dark Elves' eyes just aren't used to sunlight.
  • In Sheep, Dog 'n' Wolf, you have a Puzzle Boss who runs away from spotlights. Curiously enough, he doesn't seem to have a problem with the sunlight when you meet him earlier in the game.
  • In the Fallout 3 DLC The Pitt, the Trogs are oversensitive to light, and Ashur's henchmen have installed floodlights in Uptown to keep them out. Wernher's solution to the quest line involves turning off the lights and turning the Trogs loose on the slavers.
    • Likewise, the Tunnelers from Fallout: New Vegas: Lonesome Road, who are an Underground Monkey Palette Swap of the Trogs, are similarly photophobic due to decades of living underground, thus Flashbangs and Flare Guns are very effective at repelling or frenzying them.
  • In the Kanegasaki Nightmare stage of Sengoku Basara: Samurai Heroes, Oichi is in a "Sleepless Hell" for most of the stage in which she has health regeneration as well as being tougher all around. By capturing the nearby bases the player can light some lanterns that severely weaken her. However, an in-game bonus objective is to beat her without lighting the lanterns.
  • In The Elder Scrolls series, all known bloodlines of vampire are, at the very least, weaker in sunlight than they are at night. This ranges from a mild irritation which prevents natural healing and Magicka regen, to outright being burned by sunlight and potentially being killed by it. The Vvardenfell strain of vampires in Morrowind are outright damaged by sunlight no matter when they last fed. In Oblivion, sunlight could kill them, the longer they went without drinking blood the more damage they took. Fast traveling in daylight could prove lethal. In Skyrim sunlight stops vampires regenerating health, stamina and magicka, something non-vampires can naturally do. Online includes a vampire bloodline who are not harmed by sunlight, but simply have far greater power during the night.
  • In Psychonauts, The Phantom/Jasper Rolls cannot stand the spotlight shining into his eyes due to the fact that as a Straw Critic, Jasper cannot stand any form of positivity and as such his boss fight involves triggering spotlights to hit him so that he's made vulnerable. In the ending of his stage, Jasper is unable to withstand Bonita's radiance and is left to shrink while screaming ineffectual insults, representing Gloria's positivity overcoming her self-hatred.
  • Implied with the final boss in Pinball Quest; hitting the candles around the chamber increases the damage you inflict.
  • Nosferatu: The Wrath of Malachi: All Vampires are hurt by sunlight. In fact, it's the only thing that can hurt the Count.
  • In MechWarrior Living Legends, "Extremity" takes place on an asteroid rapidly revolving in space near a star. When in the shade, battlemechs dissipate heat at an astonishing rate, allowing them to fire lasers almost endlessly. When the sun comes back up, temperatures skyrocket to dangerous levels, making laser-heavy mechs massive deathtraps because firing their weapons has a pretty good chance of causing their fusion reactor to explode.
  • For both Fallen London and Sunless Sea, practically everything that's even slightly off in the Neath, be it the local Fantastic Drug, people who've died and come back, or even simple jewel-like stuff from the roof called Glim, will either be violently un-weirded or simply destroyed outright, with Prisoner's Honey becoming regular honey, Glim melting into useless goo, and people who've either died and revived or simply stayed long enough spontaneously bursting into flames. Devils don't risk going to the surface presumably for the same reason, and it's simply terribly difficult to get anything that bends the laws of physics even slightly to survive on the surface for this reason. This doesn't stop people from catching light in special mirrored boxes and smuggling them back in. Apparently, sunlight is also dangerously addictive, especially for something that literally burns you alive. And hilariously enough unscrupulous dealers cut it with moonlight, which leads to weird visions of a timeline that never happened along with the horrible burning. There is a good justification for this: sunlights are the methods that Judgements, who are in form of stars, enforce the laws of physics. The Neath, mostly hidden from sun's light, has pretty wonky physics that the Judgements don't approve.
  • You in Dark Watch. You don't get damaged but you lose your vampire abilities until you either find shade or get close enough to a certain McGuffin.
  • Ghosts in Dragon's Crown could only be defeated by light, which generally means you need to approach them with fire to banish them. Thankfully, the game provides you with convenient torches whenever you encounter them. The Wraith boss, being a higher class of Ghost, couldn't be banished by a simple torch, but could be damaged if you manage to light the candle of the nearby Goddess Statues. It also couldn't approach a room filled with sunlight, giving your characters an avenue of escape if you're unable to defeat it with the available holy candles.
  • In Gems of War, Sapphira insists on Trial by Combat (having been refused a proper trial), but her accusers insist that it be fought in broad daylight. Since she's a vampire, this is a problem for her.
  • In Pikmin 3, the cave-dwelling Phosbats take continuous damage when in the light of a Glowcap or Light Bulb. Their adult form, the Vehemoth Phosbat, does not lose health in the light, but can be temporarily stunned by it, and enough light in an area prevents it from becoming invisible.
  • Revenants in Nexus Clash get their power from the death-goddess Hashaa and are weakened or even outright harmed by daylight.
  • A group of magically-enchanted rats in Lunarosse are killed when exposed to sunlight. However, this was an accidental discovery, as the party was just trying to get away and found this out when they smashed the exit wall open.
  • Vampires in Golden Krone Hotel take heavy damage from sunlight, enough to instantly kill most of them. Unfortunately, this also applies to the player once the vampirism meter fills up. Light from torches and magic is safe, though.
  • The Spiderbugs from Metro: Last Light start smoldering just from the light of Artyom's headlamp. A few seconds and the bugs lit up will scatter back; a second or two more will make them flail until they fall on their backs. From there, you can shoot them dead, perform a Finishing Move with a knife, or just keep lighting them up and they'll burn to death.
  • The ghosts in Wii Party's co-op minigame "Torchlit Terror" can be vanquished by illuminating them with flashlights.
  • The Infected from Deceit are slowed down by bright lights, and cannot transform into their Super Mode when the lights are on. Common tactics for delaying an Infected during blackouts are shining a flashlight in their eyes before capping them in the skull with a pistol, taking pictures of them with a camera (flash included) and capping them in the skull with a pistol, and deploying a Flashbang trap that gets triggered when they get too close to it and then capping them in the skull with a pistol.
  • In the Boogeyman games, shining your flashlight on the boogeyman is the only way you can keep him at bay.
  • In Final Fantasy XV, Daemons only come out at night because they burn up in the daylight. Episode Ardyn reveals that this also applies to Ardyn, a humanoid Daemon, himself. However, unlike other Daemons, the Healing Factor provided by the highly concentrated Starscourge within him is more than powerful enough to overcome the damage inflicted by the sunlight. The constant cycle of burning and regenerating is still quite painful, which is why he covers up his body and wears his trademark Nice Hat to shield himself from the sunlight.
  • The supernatural creature from White Noise 2 can be stunned by light. This can be used to rescue fellow investigators when it attacks them.
  • Might and Magic VIII: Although it isn't actually shown (the mentions indicate to be to lethal degrees), a plot point relies on vampires being subject to this trope — the Necromancer's Guild of Shadowspire is embroiled in a war with the Church of the Sun, with the war effort hampered by the fact that vampires can only defend Shadowspire during the night (there is a type of amulet that protects against sunlight, but it serves as a handwave for playable vampires — it is far too expensive to outfit an entire army with). Their solution was a localised The Night That Never Ends, but the Church managed to steal the Brazier that had been painstakingly crafted for that purpose. If you want to recruit the Necromancers into the Alliance, you quest is to retrieve the Brazier, tipping the balance of the war in the Guild's favour and making things a lot easier for vampire members of the Guild.

    Visual Novels 
  • Kubitarou from Spirit Hunter: NG is sensitive to light, and will disappear if a strong light is shone on her. This is justified as Kubitarou having oxyopia when she was alive; her acute eyesight caused her to be overly sensitive to light, which became a straight-out weakness when she became a spirit.

    Web Animation 
  • DSBT InsaniT: Averted with Boo, as he gladly tells Bill after his Light Beam fails to harm him.


    Web Original 
  • Vamp of the Whateley Universe. She's an albino with vampiric powers, and she's sensitive to sunlight. Carmilla used to be extremely sensitive, and wore special protective armor so she could go out during the day.
  • As DIO is still a vampire in Vaguely Recalling JoJo, he carries around an umbrella to protect himself from the sunlight.
  • In Brennus, the Dark's wraiths are weakenend by light.
  • In The Sanguine Chronicles, sunlight doesn't directly harm vampires, but it does disable their supernatural powers.
  • SCP Foundation

    Western Animation 
  • Two of the ghosts from the Chest of Demons in The 13 Ghosts of Scooby-Doo were vulnerable to sunlight:
    • Queen Morbidia from "Me and My Shadow Demon" was defeated when exposure to sunlight turned her into ash, afterwards her ashes were swept up and put into the Chest of Demons.
    • Rankor from "Coast-to-Ghost" was a vampire ghost, so naturally he had a weakness to sunlight. When he's about to be destroyed by sunlight, though, he willingly goes back into the Chest of Demons when Scrappy and Flim-Flam offer it as a way to escape the sunlight.
  • Adventures of the Galaxy Rangers: Starstones, a rare gem that is often used as an Amplifier Artifact is extremely fragile, and decays rapidly when exposed to UV light.
  • Being a vampire, Marceline from Adventure Time can't be in sunlight without an umbrella or some kind of shade, or she'll burn and die.
  • Alfred J. Kwak: Alfred manages to defeat the Evil Spirit of Darkness when he realizes that shining a bright light in the genie's face hurts it to the point that it would prefer going back inside the bottle. Alfred even removes his lamp for a few seconds just to annoy it, prompting a partial re-emergence by the genie, before forcing it into the bottle completely.
  • In Archie's Weird Mysteries, a vampire explains to the titular character that while the Vampire Master can't ever handle sunlight, lesser minions like herself can if they stay in human form and "wear some serious sunblock".
  • Ben 10:
    • It introduces Ghostfreak, a subconscious alien that broke free from the Omnitrix with plans to take over. When Ben used his DNA, he had a sun-proof cloak that hid his true appearance, restricted his power, and protected him from sunlight (which could burn him to death). But when he went rogue, he got rid of the sun-cloak and went out his way to make the world filled with darkness.
    • Ben 10: Omniverse introduces Whampire who is, well... a vampire. Although he's only incredibly weakened and in pain when faced with light instead of being killed by it.
  • Gargoyles in Gargoyles turn into stone when touched by the sun which let them defenseless against enemies and is a common way to kill them.
  • Zartan from G.I. Joe: A Real American Hero. The experiments done on him give him amazing powers, but a severe weakness to sunlight. Exactly how it works and what qualifies as enough sunlight seems to vary from episode to episode. Eventually, the writers got rid of it. In any case it was basically just a way to promote his toy, which changed color in sunlight.
  • The He-Man and the Masters of the Universe episode "Night of the Shadowbeasts'', the eponymous beasts not only hate sunlight, but moonlight as well. To use them, Skeletor causes a volcano to erupt, filling the sky with smoke and ash.
  • The Imperium in Justice League had no resistance to sunlight.
  • The Powerpuff Girls episode "Boogie Frights" had the Boogie Man and his minions being allergic to the sun so they block it with a giant disco bulb, eventually once the girls destroy it the sunlight disintegrates them.
  • The Nightbreed from Static Shock. Continuous exposure to light seems to leave them very weakened and feeling sick.
    • Ebon also counts, although he can come out in daylight and be just fine. Only a focused beam of light seems to weaken him.
  • The Kanabo in Teenage Mutant Ninja Turtles: Fast Forward are weak against sunlight. Light is also Sh'Okanabo's weakness, as revealed in the penultimate episode "The Day of Awakening". Hence, why Sh'Okanabo wanted to block out the sun so it wouldn't interrupt his plans to cover the world with Kanabo drones again.
    Viral: Analysis indicates that the unique wavelength of this planet's solar radiation's focus through its unusually oxygenated atmosphere has a dire effect on the emerging symbiosis. In other words...
    Sh'Okanabo: All of my efforts have been in vain! The Kanabo cannot survive on Earth. (Angrily roars as he throws a temper tantrum and tosses everything around in his ship) This place could sustain us for centuries if not for its accursed sun... But perhaps... That obstacle can be eliminated. (laughs evilly)
  • Mumm-ra from ThunderCats (2011) has this as his Weaksauce Weakness, though interestingly enough his earlier counterpart didn't. (He was instead vulnerable to his own reflection.)
  • Trolls from Trollhunters are a magical, stone-based species that originates from deep within the Earth. Should a troll's skin touch sunlight (with the exception of Changelings and Stalklings), they become inert stone.
  • In Xyber 9: New Dawn, The Machina can't handle sunlight due to the virus they're all infected with.

    Real Life 
  • Due to their soft, moist bodies being sensitive to heat and dehydration, earthworms spend much of their lives underground and display an aversion to bright light (they lack eyes, but have light-sensitive cells in their skin). They also die quickly when exposed to direct sunlight.
  • The sun can cause sun burns and skin cancer. The genetic disorder xeroderma pigmentosum removes the body's ability to repair damage caused to the skin by ultraviolet radiation; as a result sufferers are highly vulnerable to skin cancer and must avoid sunlight as much as possible.
  • Albinos do not like direct sunlight — they have no melanin to delay sunburn, and in bright light their eyes hurt and see even worse than they do normally ("normal" being half-blind).
  • Every species of plant has evolved to tolerate specific amounts of sunlight (usually divided by horticulturalists into three categories: Full sun, Partial sun, and Shaded). Plants that tolerate heavy shade will be killed surprisingly quickly by too much direct sunlight. For reference, most house plants are shade tolerant (or prefer indirect or filtered sunlight).
  • People with Photophobia can experience a range of symptoms ranging from discomfort and sensitivity to headaches (unless the headaches themselves are the cause of photophobia) when they are in the presence of bright lights.
  • Many geeks, introverts and other people who spend much of their time indoors tend to quip about the "evil daystar" on the occasions that they must go outside during the day. Along with those people that work a graveyard shift.
  • Deepsea life relies so much on the lack of light around it that exposure to what is (to us) normal amounts can prove fatal, ranging from sensory overloading to flat-out blindness. (Most life isn't so much blind as it is supremely sensitive to faint light; that's what anglerfish rely on, after all.) Yes, this means that whenever we manage to capture footage of, say, a gulper eel or a viperfish, it usually ends up dead shortly afterwards- a blessing for the scavengers on the seafloor, a miserable feeling for us. Luckily, scientists are trying to switch over to red light to prevent this from happening. As red barely penetrates through even the surface of the water, most aquatic creatures can't perceive it.


Video Example(s):

Alternative Title(s): Light Hurts Evil


Gizmo doesn't like photos (Gremlins)

The Peltzer family accidentally break the first rule by taking a flashy photo and hurting Gizmo. Therefore, Randall immediately explains that sunlight could kill him and the other rules to taking care of him

How well does it match the trope?

Example of:

Main / WeakenedByTheLight

Media sources:

Main / WeakenedByTheLight