Since the Sun is the main provider of life, heat and energy on Earth, it is a symbol of health and light, and is often depicted as a benevolent being.
Sometimes, the Sun is depicted as a sentient, malevolent entity that actively tries to harm the life forms it shines upon. Some works also feature sun-like beings that bear malicious intentions.
Not that this is completely unjustified: while obviously not sentient, the Sun is incredibly nocive to the people that stay too much under its lights. Aside from the visible spectrum, it emits a vast array of electromagnetic radiation that can be exceedingly dangerous, most notably ultraviolet light, which can cause various skin cancers (including the deadly melanoma), cataracts, and sunburns, among others. Earth is only liveable because its own magnetic field shields us from most of the Sun's radiation. It's only logical to see/portray it as an evil entity in some works.
Sub-Trope of Sentient Stars and Light Is Not Good. Compare The Power of the Sun. Can overlap with Evil Is Burning Hot and The Face of the Sun, usually with an angry, menacing expression for the latter.
- Dr. Elefun/Ochanomizu created an Artificial Sun in the original Astro Boy manga; originally conceived as a prop for films, it was eventually used by a criminal to melt and rob bank safes. This was eventually referenced in a quick cameo at the end of the Western Astro Boy film, too.
- Prometheus from One Piece is a malevolent Homie formed from a portion of the Yonkou Big Mom's soul that takes the form of a sun to deep-fry anyone who angers Big Mom.
- In Jo Jos Bizarre Adventure Stardust Crusaders one of DIO's minions, Arabia Fats, has The Sun as his Stand, which takes the form of a gigantic ball of fire that hovers in the air, disguising itself as the actual sun. As well as being able to radiate lethal levels of light and heat (enough to make night appear as day), it can also fire concentrated beams of energy at Fats' enemies. Fortunately for the heroes, its one-dimensional nature doesn't provide its user with any defensive capabilities, and they're able to defeat it by finding where Arabia Fats is hiding and knocking him out, rendering The Sun inactive.
- Solaris is an evil artificial sun and one of Superman's nemeses in DC One Million and All-Star Superman. It is often nicknamed the "Tyrant Sun" or the "Evil Star".
- In the aftermath of the Beyonder's supposed death during the Secret Wars (1984), his released energies in the Beyond Realm took the form of a new universe which was entirely encompassed by the Beyonder itself. Once the Fantastic Four arrived there, the Beyonder took the form of the universe's sun and immediately threatened them with death.
- In The Authority, the Scorched Earth Arc revolves around the Earth's sun turning malevolent. The superhero Winter piloted the orbital platform into the Sun to kill some aliens and save Earth from the alien infestation, where is was presumed he died. However his energy-absorbing powers allowed him to survive, evolving his consciousness to spread throughout the Sun to give it sentience using his own mind. His experience trapped Winter in scorching agony, driving him insane and desperate to find someone who could kill him. As such, he started trying to destroy the Earth by accelerating the Sun's life cycle to induce a supernova to provoke a response from Earth.
- A form is presented in the New 52 with Apollo, who in this interpretation is a massive and unrepentant Jerkass despite being the God of the Sun, to the point he attacked Superman out of spite and even empowered Zod and Ursa with sunbeams to beat Superman and Wonder Woman to a pulp out of petty revenge for Superman humiliating him earlier.
- The Adventure Time comics has primal elemental embodiments of their Four-Element Ensemble of Candy, Ice, Slime and Fire that are eldritch abominations that existed before life and death itself. The fire elemental is literally the sun, covered in eyes, and it wants to roast the Land of Ooo to feast.
- How the sun in Teletubbies is portrayed in virtually every single work derived from the series. Canonically, it doesn't really do anything except laugh, but it is considered that creepy.
- RainbowDoubleDash's Lunaverse features Corona, the Tyrant Sun. Once, she was Celestia, the Undimmed Daystar, Equestria's guardian and leader. But that was before she fell into madness, before she brought ruin and death on her little ponies, and before her sister was forced to use the Elements of Harmony to bind her into her own Sun. Even a thousand years later, fear and hatred of her is one of the core foundations of Equestrian society.
- Doctor Who: In "42", the Doctor and Martha must rescue a spaceship that is being pulled into the sentient sun of the Torajii system. Subverted, as it doesn't try to destroy the spaceship for malicious purposes, but because the crew had stolen its core, and it wanted the core back.
- In the Star Trek: The Next Generation episode "Masks", our heroes learn of an ancient culture who feared a malevolent sun goddess, Masaka. The only one who could counter her was the more benevolent moon god, Korgano.
- To the Aztecs, the sun was a God named Tonatiuh, which required Blood Magic to move in the sky, so the Aztecs performed thousands of Human Sacrifices to feed him with human blood.
- Classical Mythology:
- Quite possibly Medusa. She is speculated to be the remnants of an old middle-eastern sun goddess (this being a good candidate), which explains quite a few things: the "snakes" are actually beams of sunlight, while the power of the evil eye is otherwise attributed to the sun and his witch offspring (i.e. Circe). Thus, the sun is basically a monster that turns you into stone.
- On that note, the sun titan Hyperion is considered to be aligned with Kronos and locked in Tartarus. Helios (who, depending on the many sources, is either Hyperion's son or Hyperion himself) is generally the Extreme Doormat in mythology, but gives evil powers to his witch daughters and does dickish things sometimes.
- Egyptian Mythology: Sekhmet is a sun goddess that almost committed genocide on mankind and could only be stopped by making her drunk on beer. Meanwhile, there's a demon that's basically just a sun with a knife.
- Bila from Aboriginal Australian Myths is a sun that also happens to be a cannibal, roasting her victims over a fire. That's where daylight comes from.
- In Magic: The Gathering, there have been a number of malevolent or at least dangerous sun-related entities:
- In Kamigawa (based on Japanese Mythology), the sun kami Terashi is a terrifying Eldritch Abomination siding with most of the kami to kill everyone.
- In Theros (based on Greek Mythology), the sun god Heliod is a horrible, petty tyrant that has a long list of atrocities to his name, most famously killing his loyal champion, Elspeth, out of pure spite.
- In Ixalan, the sun is embodied as dinosaurian avatars that eat people.
- In the Fallen London cosmology, the Sun is one of the Judgements, almighty entities that use their light to impose their own laws upon everything they shine upon. In Sunless Sea, the Dawn Machine functions as an artificial Sun that gained sentience, and it's just as nasty as the source material.
- Astro Boy: Omega Factor features a boss known as the Artificial Sun; it is a robotic sun capable of melting anything in its path that grows larger the more Astro shoots at it.
- In Sunless Skies, while artificial, the Clockwork Sun on the ridge of Albion is a hateful and malevolent entity that bathes Albion in a toxic light that can turn the neraest people and environment into jagged glass, bringing them excrutiating pain. The people operating it must wear a full-coverage suit in order to avoid those effects. Also, the Sun houses a prison that leaves its prisoners without any protecting gear, leaving most of them them to turn into glass and go utterly insane in the ordeal. There's also the Sapphire'd King in the Blue Kingdom, which is a natural, perfectly normal (if strong) and lively Judgement. Naturally, this means it's also an utter bastard, who set up a whole mass of asphyxiating bureaucracy to process the souls of the dead only to basically prop itself at the metaphorical pearly gates with mouth wide open, eating every soul that's done all the paperwork.
- Mr. Bright is a small sun that is fought as a boss in Kirby's Adventure alongside its moon counterpart, Mr. Shine. They reappear in Kirby's Dream Land 2 and as a sentient painting in Kirby's Dream Land 3.
- The Final Boss of Miitopia is the Darkest Lord, who takes the form of a giant sun/coin with the Great Sage's face and is surrounded by smaller coins bearing the faces of stolen Miis (including some of your party members). The model is reused by the strongest Bonus Boss of the post-game, the Dark Sun, which is grey and comprised only of partial faces, making it more of an an Eldritch Abomination.
- Super Mario Bros.:
- Super Mario Bros. 3 has the Angry Sun, a miniature sun enemy with a furious face that tries to ram into the plumber from above, and only appeared in two levels. It would later reside in the Desert Hills racetrack in Mario Kart DS and Mario Kart Wii, where it shoots Fire Snakes that act as obstacles to the racers. It wouldn't make a true return to the franchise until Super Mario Maker 2.
- Wario Land 3 has the Taiyo, which is found in the Vast Plain and Colossal Hole levels. It flies around the sky during daytime, trying to set Wario on fire. Its name even means "Sun" in Japanese.
- In the deleted scenes from asdfmovie, one skit has the sun sadistically call out a human to directly look at it. The results are predictable.
The Sun: HAHA now you're blind!
- In several Brawl in the Family strips, the Sun is a cheerful character that falls in the Obliviously Evil category:
- In an alternate ending of Sun's Song, the Sun has a family reunion with many other suns, right next to the Earth, which really can't take all that heat and ends up completely burnt.
- Other strips (seen here, here and here) has the same Sun joyfully sending beams to Earth to please either a flower or the planet itself, only to burn the entire world to a crisp.
- In Ra, the Sun is the host, residence and primary fuel source of the titular supercomputer and its genocidal inhabitants.