Muggle Foster Parents

The super-powered hero is raised by normal human foster parents, sometimes unaware of his true heritage until his abilities manifest. This can be used as an open plot device for a Luke I Am Your Father later in the series. Though they might not get combat training or magic instruction while hidden, they usually find out Upbringing Makes the Hero.

This is a frequent trope in mythology. If the foster parents are not called the child's mother and father, they are frequently their aunt and/or uncle. This is a throwback to older times, where children whose parents died were often adopted by the parent's brother.

Don't expect them to live too long once they've served their purpose, and their "son" might not be terribly grief struck either. On other hand, if they are still around into the hero's adulthood and you are stupid enough to threaten them, you've just hit his Berserk Button.

See Tell Me About My Father, can be Happily Adopted. Contrast Raised By Orcs, Turn Out Like His Father. See also Changeling Fantasy and Raised By Natives.

Anime and Manga

 * This is fairly common for the Cute Witch subset of Magical Girls if she comes from another dimension. Her foster parents either know of her powers, or are hypnotized to think they always had a daughter and that she's a normal girl.
 * Minky Momo in Magical Princess Minky Momo
 * Nina Sakura in Ultra Maniac, but only her foster mother is a muggle; her foster father is magical, too.
 * Tickle from Majokko Tickle pretends to be the twin sister of a mundane girl.
 * Comet-san from Cosmic Baton Girl Comet San lives with the mundane family of two toddlers she makes friends with, as a home stay student.
 * Subverted in the Italian magical girl series WITCH: Elyon ; the couple she thought were her natural parents are, in fact, caregivers who have been looking after her on Earth, but.
 * In Sailor Moon, Usagi's parents were her biological parents; but she also had a moon ancestry through Reincarnation. However, it comes closer to the description with her daughter Chibi-usa who (not knowing them to be her Grandparents and Uncle, at least not in the anime) hypnotized Usagi's parents and brother into thinking that she (Chibi-usa) was their niece and cousin. Chibi-Chibi is probably closest, in the anime she's not related to Usagi at all, and hypnotizes her Mother into thinking she has a second daughter; she does the same in the manga but there she.
 * Now try absorbing Usagi's backstory in fragments (e.g., starting with Season 2 instead of Season 1) when you're too young to understand the idea of Reincarnation: There's this girl, right, and she's a super hero with cool powers, and she's really the daughter of the queen of the moon! But somehow she's living with a family on Earth, and her Earth parents and Earth brother don't seem to remember that she's really the Moon Princess. And for some reason they don't even seem to think she was adopted. Crazy Earth people. Wait, now that she knows her real mom, why is she still living with these fakers?
 * Queen Serenity is dead and the one mom she met with was actually a holographic artificial intelligence or maybe a Ghost in the Shell, programmed by her. In either case, even if Usagi moved to the moon, she'd be no better off than, for example, Harry Potter with a sentient painting of his parents. Sure, it has his parents' memories (or facsimiles of them) as well as their personalities, it wouldn't REALLY be them.
 * Majokko Meg Chan not only had a muggle foster family (except for the mother who also a witch) she actually had no concept of family live herself being a witch from a realm where families don't exist. The focus of the show being Meg learning about family life. Mami, the motherly ex-witch, wuses what remains of her magical powers to make people believe that her protegèe is her biological daughter, including her own husband and biological kids.
 * Implied in Tweeny Witches: Genki Girl quick-magic-learner Alice's bio-dad is a Badass Adventurer Archaeologist and it's implied that the head of the witches is her bio-mom based on their shared love of long red nails and the amount of time she spent with Alice's dad. Alice's "real world" mother, on the other hand, appears to be suffering from severe depression caused by her husband's long absence; however, she still has a sense of humor so it's possible she really is Alice's mother.
 * Sarutobi Ecchan is a ninja Magical Girl who moves in with her muggle friend, Miko, and Miko's grandparents.
 * Mahou Shojo Lalabel is similarly taken in by her muggle school-friend, Teko, and her grandparents.
 * Averted in Mahou Tsukai Chappy: Chappy's parents actually go fetch their daughter after she leaves the Magical Land, but end up staying at Earth.
 * Also averted in Sally the Witch: Sally's parents do wath over her but they stay in Astoria almost all of the time while she lives ans trains in Earth. Sally's friends and teachers believe that they work abroads.
 * Glass Fleet's Vetti and Cleo were raised by these. Cleo was raised by his father's right hand man, while Vetti was raised by former subjects of his father's, who weren't so nice to him.
 * The Arima family for Shiki in Tsukihime. It actually counts twice because of his mixed upbringing by the Nanaya (assassins, but good) and Tohno (half demon clan) families. When he finally goes back to the Tohnos, he uses his Nanaya abilities to quell problems related to the Tohnos to some extent depending on the route. Also vampires.
 * Goku of Dragonball Z was found as a baby and raised by a human Cool Old Guy named Son Gohan. He thought of himself as one until his long-lost brother told him of his alien origins.
 * Honoka of Chibi Devi becomes the surrogate mother of Mao, a demon baby. Slight variation in that Honoka is only 14.

Comics

 * Pictured above: Superman was raised by the Kents in Smallville.
 * In an Alternate Universe named The Nail, he was raised by Amish and didn't become Superman, but was a simple Amish farmer.
 * In the DCU, Jade and Obsidian, the children of the first Green Lantern, were raised separately by normal adoptive parents, unaware of their parentage or each other's existence until their late teens when their powers manifested.
 * Elf Quest: Wavedancers has Wavelet, who was raised by humans from infancy. Being an elf, the "adopted" part was rather obvious, though her being one of the few treeshapers, she became very respected by the tribe that raised her as "good spirit of plenty".

Film

 * Luke and Leia in Star Wars, though Luke was well aware he was living with his aunt and uncle. Uncle Owen and Aunt Beru, Luke's caregivers, were about as Muggleish as anyone gets in Star Wars. Leia's foster parents were royalty.
 * In the Disney Version of Hercules the protagonist has these, ala Superman. In this version the reason Hercules is a Demi-God is because he was Zeus and Hera's son but was fed a 'mortal potion' as a baby but didn't complete it allowing him to retain his strength. In the original tale, it was because Zeus had sex with a mortal woman -- and for this main reason, Herc's main nemesis in the original myths was Hera, not Hades.
 * Of course, in the Greek gods' origin story, a prediction that one of the children of Kronos would kill him led him to develop the mildly unpleasant habit of swallowing his newborn children whole. To save one of her children, Gaia gives Zeus to be raised by a family of olive farmers until he was 17. At this point, naturally, he goes off to cut up his cannibalistic father and complete the cycle of self-fulfilling prophecy.
 * Though other versions of the myth have him raised by everything from Gaia to... A goat and a troupe of dancers.
 * Rebecca, in Birth Rite, had foster parents before she found out about her witch heritage.
 * Anastasia, who lived in an orphanage before discovering her real heritage.

Literature

 * Harry Potter, the source of the trope name, has a strange twist since the Dursleys hate Harry and vice versa.
 * In an aversion of this trope, Hermione and all muggle-borns are naturally-gifted humans born to parents who are unaware of magic. Their extended families are presumably unaware of magic as well. It's mentioned a few times on how Hermione has to help her parents with magical-related things, including wizard money.
 * The opposite of this is the Squibs: they're unmagical humans born to magical families and are usually looked upon with disdain or at least pity. Filch is presumably mean to his students because he is jealous and bitter. An advertisement for a product that teaches magic to Squibs is presented like a Hollywood diet pill, including testimonials. It doesn't work, of course. However, Squibs do serve as excellent (if eccentric) informants, witnesses, and spies. Squibs can see magical things that Muggles can't, even though Squibs can't use magic.
 * In the Mahabharata, both Karna and Krishna are brought up by foster parents who don't realize their real power. Both end up fighting in opposite sides of the Kurushetra War.
 * Eragon.
 * Pratchett's Discworld has Carrot Ironfoundersson, born human but raised by dwarves; he is in fact the legitimate heir to the throne of Ankh-Morpork. He doesn't claim the title, though: he doesn't want the job, and there's a good chance Vimes would literally have his head if he did. (Only not really. More to the point, Carrot admires Vimes and Vimes doesn't believe in kings, and Carrot is quite sure he can do more for the city in the Watch. He's right.) It's the biggest Open Secret in the city.
 * In The Wheel of Time, Rand is found by Tam al'Thor on a battlefield, and Tam decides to take him home to his wife Kari to raise as their son. Tam isn't completely a muggle however. He is a skilled swordsman and Rand uses basic techniques Tam taught him to survive his first brushes with baddies before he can get more training. Also subverted in that it appeared Tam was going to be a Death By Origin Story, but he survives and becomes an active member of his hometown's resistance fighters and.
 * Chronicles of Prydain: Inverted, Taran is a muggle with a Magician for a foster parent.
 * Subverted in Akata Witch by Nnedi Okorafor. Sunny has magical abilities, but her parents don't. However her parents are her biological parents, the magic just skipped a generation.
 * In The Sword of Truth, Richard Cypher is kind of raised by a muggle foster father in the non-magical land of Westland, and although his mother is his real mother, she's also non-magical. It's only much later that he finds out that.
 * Since magic is passed down by familial lines, and Richard is explicitly said to have inherited magic from, it's very probable that his mother did have magic, but there doesn't appear to be direct evidence either way.
 * Inverted in Septimus Heap, where Princess Jenna is adopted by a Wizard family.
 * In Alcatraz Versus the Evil Librarians, Alcatraz goes through 27 sets of these.

Live Action TV

 * Twice in Kyle XY: In the first season, when Kyle himself is unaware of his true origins, and in the second season, when Kyle wants to live the normal life that his genetic father was never allowed to have and so returns to his old foster family.
 * Subverted partially in Heroes, where Claire's foster adoptive dad is an incredibly badass secret agent, whereas her superpowered mother is a regular woman who lives in a trailer.
 * Star Trek the Next Generation episode 'True Q' involved a similar scenario except the parents were biological rather than foster.
 * In Charmed, Paige Matthews was given to normal parents after her birth and didn't know her true heritage until her powers started manifesting thanks to a spell Piper had cast to bring Prue back.
 * In Tin Man, DG believes her parents are her real parents. Later it is revealed that they are robots with nurturing chips.
 * In Merlin., this applies to the Uther and Morgana relationship, until season 3. Then we find out he IS her father.

Web Comics

 * Agatha from Girl Genius was raised by people she knew as Adam and Lilith Clay, who she referred to as her parents, but it was later revealed.
 * She still treats them like her parents and is enraged when Von Pinn handwaves
 * In The Inexplicable Adventures of Bob, Molly the Monster--arguably the most intelligent being on Earth but still young and very naive--is being raised by the very human Bob & Jean.

Web Original

 * The Questport Chronicles: Gawain, an elf, is raised by a human blacksmith after being abandoned by his parents. The blacksmith's death in a plague is what catalyzes Gawain to seek adventure in Questport.

Western Animation

 * Similarly, Arnold's parents Miles and Stella are Badass adventurers who are missing and presumed dead. He's raised by his Gramps and his Grandma, although they're not exactly normal.
 * Subverted in the '80s cartoon Wildfire, in which our heroine is a mystical princess from another dimension being raised on Earth by a Muggle foster father...who, it turns out, is her father, brainwashed to think he comes from Earth.
 * In Wakfu, Yugo's Muggle foster-father was hand-picked by a dragon.
 * In Codename Kids Next Door, Nigel Uno/Numbuh 1's dad is seen as a very naive person. However, he is actually Numbuh 1's mother.

Video Games

 * Lloyd Irving in Tales of Symphonia was raised by a Dwarf, unaware that . Rumors also claim that Colette's real father, Frank, is really a Muggle Foster Parent and Colette's real father is an angel. Angel Remiel tells the party that Colette is, and that he
 * Ivan of Golden Sun fame was entrusted by his Adept family to (soon-to-be) Lord Hammet and Lady Layana of Kalay, along with some business advice to ensure that he grew up comfortably and in the right place at the right time to fulfil his destiny saving the world with Isaac & Co. Ivan doesn't bother referring to Hammet or Layana as family, but anyone who thinks he doesn't care about them is in for a nasty surprise.