Basic medicine and sanitation are simple. During the Warring Clans era, they become revolutionary. [OC-Insert]

Prototype/Spider-man(Marvel) Fusion. For most, adolescence is a time of change and growth. For some, the changes are a bit more drastic than expected. Peter struggles with a changing world, an even more changeable body and more questions than he has answers for. He tries to understand where his strange new powers come from and the most important question of all... what happened?

After a series of attacks, Alex's entire class is sent to be trained at the SAS training camp, to give them a degree of self sufficiency to help them defend themselves. Unfortunately for Alex, he has to go with them... and not get noticed as different.

Things don't go as planned after the Echidna fight. Hell, they don't even try to follow the script after Taylor's identity was revealed. But everything truly falls apart when the Simurgh comes to Brockton Bay. Canon divergence/AU

Being reborn into the Uchiha clan in the same generation as Itachi promises nothing but a short-lived second life. But, hey—if I'm going to die with certainty, I might as well go out with a bang, right? SI Rebirth. Complete; all extras posted.

...Oh wait, it did. Semi-SI.

Young Auror, Harry Potter was convinced the world was out to make the rest of his life dull; until a Demon called Whistler came into his life to give him the chaos he'd been only dreaming of.

In unity lies strength; each leaf is important or the beauty of the tree is lost. Some bonds, however, are difficult to forge and even harder to keep. The tide of blood nears, drums thunder, and three Genin stand tall as the world spirals into madness. [AU]

Magic can solve all the Wizarding World's problems. What's that? A prophecy that insists on a person? Things not quite going your way? I know, lets use this here ritual to summon another! It'll be great! - An eighteen year old Harry is called upon to deal with another dimension's irksome Dark Lord issue. This displeases him. EWE - AU HBP

It began after I got rejected by Signal again, though at the time I had no idea what was happening. Titles and levels suddenly appeared above people's heads and then weird things began to happen, as if I was in a game. And then, I realize I was in a game. But...if my life is a game, I'm going to win it. My name's Jaune Arc and I'm the Gamer. RWBY/The Gamer.

Post-Worm/Pre-Thor-MCU. After her death, Taylor is brought to Valhalla and later in front of Odin for a very specific purpose. Shutter your windows and grab your bug spray Marvel Cinematic Universe, there's a new valkyrie in town. Taylor's got her bugs back and she's not afraid to use them.

For Taylor Hebert, death was just the beginning. Reincarnated into an alternate earth version of herself she awakens to find herself trapped in a very familiar locker. Now armed with knowledge of her previous life and the ability to not just control bugs but also manipulate their biology, Taylor sets off to do what she always wanted to: be a superhero. Spoilers abound; sorry.

::Year 2 Divergence:: What does it take, to reshape a child? And if reshaped, what then is formed? Down in the Chamber, a choice is made. (Harry's Gryffindor traits were always so much scarier than other peoples'.)

Post-Leviathan, Taylor is living in a shelter, angry and adrift. A chance encounter puts her on a different course as she struggles to correct previous mistakes, and find a place for herself in this nebulous world of heroes and villains. (AU, post 8.07)

Stabbed, late at night, in Hogsmeade Harry wakes up, face in the snow, in 1967. He isn't famous, he has no money, and no one has heard of Lord Voldemort. Becoming increasingly doubtful about the possibility of his return to the future he wonders if he may have to organise a little bit of a coup.

[Complete] The world is a dangerous, deadly place, and mankind vies for its very existence on a planet prowled by terrifying monsters and powerful creatures. Ash of Pallet Town, a talented trainer who knows this all too well sets out to change everything. Along the way he meets colorful characters, makes potent allies and wicked enemies, and crashes into a plot spanning all Kanto.

To become great, one must overcome great opponents. A moment of inspiration during the chuunin exam puts Sakura on the path to greatness, whether she likes it or not.

Fate hated him, Death obviously has something against him, and now he is awake in a green land unlike what he left and is determined not to care this time. NoPairings, HPLOTR X-over

"You are cordially offered a position in the Department of Mysteries." Harry receives a most unexpected offer from the Ministry of Magic - but why? Nothing is as it seems on the Ninth Level... Unspeakable!Harry

AU 4th year. Spurned by everyone, Harry accepts Bagman's help, taking the 1st step towards greatness. Elements: charms-prodigy, no-bashing, manipulative but good Dumbledore, dragons, unspeakables, HarrySusan, Ginny-friendship. Oh, the veil is a hellmouth.

I'm sick of the manipulation, the lies and the deceit; sick of jumping to the tune of dark lords and old puppeteers. I'm cutting the strings. Innocents will pay in blood for my defiance, but I no longer care. I lost my innocence long ago. Dark!Harry

Book 2. As the Second War begins, Voldemort becomes obsessed with harnessing the realm of Old Magic to his own ends. Meanwhile, Harry has to contend with the Ministry, ancient foes and the machinations of a world he barely understands.

Post DH. Harry could never have known Albus-Severus was the herald of the new dark age. He watched as his youngest child came to be known as the Dark Son. Now Harry goes back in time to save his family and his son from the dark path.

Luna had a growth spurt. Harry notices. Sixth Year AU, HarryLuna, Lemon warning, no longer a one shot. Enjoy.

Fifty years ago, Grindelwald won the duel that shaped the world. In a land overwhelmed by darkness, a hero emerges: a young wizard with the power, influence and opportunity to restore the light. Harry Potter, caught up in a deadly game of cat and mouse, must decide what he truly believes. Does this world deserve redemption? Or, more importantly, does he?

Take a deep breath, count back from ten… and above all else – don't worry! It'll all be over soon. The world, that is. Yet for Harry Potter the end is just the beginning. Enemies close in on all sides, and Harry faces his greatest challenge of all - Time.

First in the series. HPxFF crossover. Harry's in for an adventure greater than the Horcrux Hunt when Ron brings home a Playstation 2 he had found in a London alleyway. Rated T for moderate language.

Time has no meaning, not to the Planet. Time is a human conception, a human worry. But time is all Harry has left-and something he's running out of. /The Calamity has returned, they whisper. The Calamity will Break again./ [AU, no pairings.]

No matter how times change, the darker side of man and monster always struggle to be let free. Ash, a young man with dreams of joining the gladiatorial pokemon league, finds himself instead thrust into the middle of a far greater struggle.

Harry keeps shelling out for the Carpenter kids. Oneshot, futurefic.

HPDresdenFiles. Unknown to Potter there is a trail of blood to reach him in a world far from his own. And a wizard there,Dresden, who is trying to stop the green eyed demon with the lightning scar from entering his world,though he doesn't know that he is.

Harry has a dark side, just like everyone else. Ironically enough, Morgan found that out the hard way.

One twist, one change in the past can result in an entirely new future. With different allies and ever present enemies, destiny takes hold. A story exploring what effect a different Harry would have on the timeline. A/U

Uh oh.

Harry's been beaten and his friends don't like him, but how does Merlin fit into him having to save the world AGAIN? Super!Angry!Dark!but!not!evil!Harry, slave!Tracey, Harry/Fluer, maybe!femmeslash Manipulative!Dumbles!

When Jack has to go back to Chicago to be with her parents, MI6, as always, get involved with Alex's life, and arrange a guardian for him to stay with. Alex plus unknown guardian equals... oh dear.

Universes hang like beads on a string. Some are almost-mirrors of their neighbours, while others couldn't be more dissimilar. In one, a young wizard fights a hidden war against a powerful Dark Wizard. In another, superhumans walk the streets. Sometimes things can pass between. Sometimes people are stolen. Harry Potter is one such person. Rewritten.

After killing the Dursleys, Harry Potter is thrown into Azkaban. Years later, when the magical community needs him the most, they free him. Only they didn't get what they expected.

Sequel to The Denarian Renegade: Harry, the new and reluctant Knight of the Cross, finds himself fighting against new enemies as he is dragged into conflict. He will have to use all of his power to overcome new obstacles, some more surprising than others.

People often ask to see Tonks' real face. No one seems to understand that she doesn't have one. Slightly AU, gen.

Paranoia can be justified.

Captain Jack Sparrow is stuck alone on an island. Again. An unexpected visitor cheers him up.

Harry tries to tell a 'knock-knock' joke to Luna - 'try' being the operative word