1 - 20 of 365 Works in Harry Potter Has a Sibling

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  1. Tags
    Summary

    Harry and Anne can't just go waltzing back into school to finish their education, because Tom has taken over. They need to get the muggleborns into hiding and find Hufflepuff's cup before they can finally try to defeat Tom. The only problem is of course, they have no idea where the cup is....

    Series
    Language:
    English
    Words:
    33,373
    Chapters:
    18/?
    Comments:
    1
    Kudos:
    3
    Hits:
    65
  2. Tags
    Summary

    Charlotte Potter is back for her second year at Hogwarts along with Ron, Hermione and Harry. With a strange house-elf, a monster going around Petrifying students and sinister Slytherins, it's not going to be an easy year.

    Series
    Language:
    English
    Words:
    22,668
    Chapters:
    6/12
    Kudos:
    7
    Bookmarks:
    1
    Hits:
    217
  3. Tags
    Summary

    Born too powerful to be shaped for 'the greater good' femHarry is cursed by Dumbledore. Her powers are siphoned off to her twin who later becomes known as the boy-who-lived. Blamed for her mother's death, young baby Zinnia (femHarry) is stripped of family magic and is only saved when Remus and his father step forward and adopt her.

    Language:
    English
    Words:
    6,243
    Chapters:
    7/?
    Comments:
    10
    Kudos:
    39
    Bookmarks:
    11
    Hits:
    435
  4. Tags
    Summary

    Harrison Gaunt is coming back to Hogwarts for his second year!
    Quidditch and essays and fun with friends. Harry is just lucky that the Slytherin's reputation is much better now than ten years ago. What could go wrong with that?
    But first, holidays and with them a few things to take care of.

    Series
    Language:
    English
    Words:
    32,683
    Chapters:
    5/18
    Comments:
    14
    Kudos:
    55
    Bookmarks:
    13
    Hits:
    870
  5. Tags
    Summary

    La vida de Harry Potter está dividida entre el deber y la responsabilidad libremente elegida, y a medida que sus sueños oscuros sobre Voldemort aumentan, se convierte en un acto de equilibrio desesperado. UA de El Cáliz de Fuego.

    Series
    Language:
    Español
    Words:
    300,522
    Chapters:
    53/86
    Comments:
    19
    Kudos:
    78
    Bookmarks:
    4
    Hits:
    1768
  6. Tags
    Summary

    Harry was raised by the Dursleys while his twin brother was raised by James. When he ends up in St. Mungo's he meets a parent he thought was dead.

    Language:
    English
    Words:
    13,364
    Chapters:
    3/?
    Comments:
    62
    Kudos:
    211
    Bookmarks:
    67
    Hits:
    2632
  7. Tags
    Summary

    Harry and (Y/N) Potter are back for another year at Hogwarts. Only this time facing murmurs of being the Heir of Slytherin.

    Series
    Language:
    English
    Words:
    94,671
    Chapters:
    18/18
    Comments:
    2
    Kudos:
    4
    Hits:
    34
  8. Tags
    Summary

    The world thought only one Potter twin survived the night of Halloween in '81. They were wrong. Phoebe Potter did survive the events that occurred that night ten years ago. And the world will learn exactly the kind of person that she became in those ten years at Starlight Orphanage.

    Hell will be a cool vacation compared to the fury that burns in those eyes like Greek Fire, and the wizarding world has no way of knowing the terror that they've allowed to be forged...

    Language:
    English
    Words:
    41,281
    Chapters:
    12/?
    Comments:
    62
    Kudos:
    25
    Bookmarks:
    5
    Hits:
    668
  9. Tags
    Summary

    What if Harry had a twin sister who was sorted into Slytherin, we’ll this is what I think would happen.

    I know I suck at writing summaries but please give this a chance I’ve been working really hard on it.

    Chapter one: Information about the character as of 6th year.

    Series
    Language:
    English
    Words:
    215
    Chapters:
    1/12
    Kudos:
    1
    Hits:
    39
  10. Tags
    Summary

    A collection of AU ideas for this series

    Updates sporadically whenever I have a new idea.

    Series
    Language:
    English
    Words:
    27,975
    Chapters:
    15/?
    Comments:
    184
    Kudos:
    51
    Bookmarks:
    2
    Hits:
    2651
  11. Tags
    Summary

    Presumed dead from the moment she was born, Katrina Potter has led a sheltered life, hidden away from the wizarding world for her own safety. Upon Voldemort's return, she is thrust back into the world that for years, she was forced to learn about from her books and through staring out her bedroom window. With so many questions swirling around her supposed return from the dead, she finds herself under an even harsher spotlight than her brother, a constant subject of scrutiny by the Ministry and her peers. Under threat of an impending war, Katrina adjusts to her new reality, while protecting her brother from those who mock him, including a certain blonde Slytherin, and his own stubbornness, and unbeknownst to them, she could be the key to tipping the war in favor of the light or the dark.

    Language:
    English
    Words:
    58,768
    Chapters:
    8/?
    Comments:
    8
    Kudos:
    19
    Bookmarks:
    8
    Hits:
    469
  12. Tags
    Summary

    An interesting side-effect of using a Polyjuice Potion is that after it wears off it will revert a person to their true form even if they are under potions or enchantments as the Golden Trio are about to find out

    Language:
    English
    Words:
    6,548
    Chapters:
    2/?
    Comments:
    11
    Kudos:
    123
    Bookmarks:
    31
    Hits:
    1481
  13. Tags
    Summary

    Harry and Anne are looking forward to a nice quiet year, apart from a bit of Horcrux hunting all they have to do is do their classwork, and hang out with their friends. But can a 'quiet year' actually exist at Hogwarts?

    Series
    Language:
    English
    Words:
    35,934
    Chapters:
    18/18
    Comments:
    1
    Kudos:
    5
    Hits:
    159
  14. Tags
    Summary

    Harry and Hermione Potter, known more commonly in the Wizarding World as The-Twins-Who-Lived, discover Matilda by Roald Dahl when they are 8 years old.

    Series
    Language:
    English
    Words:
    27,498
    Chapters:
    16/?
    Comments:
    30
    Kudos:
    108
    Bookmarks:
    24
    Hits:
    1589
  15. Tags
    Summary

    She was drawn to the boy with the glasses, lightning scar, and green eyes that matched hers. He reached his hand out to her. Cordelia took one look back and saw dark and long yellow teeth... claws reaching for her. She accepted the boy's hand, trusting his unknown was better than what she knew was behind her.
    But was leaving everything behind truly a blessing or a curse?

    Canon storyline with intertwining AU plots.

    Language:
    English
    Words:
    11,001
    Chapters:
    3/20
    Kudos:
    2
    Hits:
    36
  16. Tags
    Summary

    October 31st, 1981, Lily Potter was murdered and her daughter was given the name 'The-Girl-Who-Lived' for surviving the killing curse. Following this, the Potter twins, Harry and Ella Potter, were placed with the Dursleys to keep them safe from the machinations of a magical world that had been stuck in war for too long.

    Unfortunately, the Potter twins grow up unloved and mistreated, barely surviving while they huddled in their cupboard under the stairs. When Harry turns five he begins to fear that he and his sister won't be able to continue with the Dursleys starving them. He made a desperate wish for help and it was answered by his magic acting out. He hides his new power, even from his sister, for fear of what his relatives might do to him if they found out. But now the future held a ray of hope.

    Now Harry had Magic.

    Language:
    English
    Words:
    19,717
    Chapters:
    9/?
    Comments:
    115
    Kudos:
    418
    Bookmarks:
    163
    Hits:
    27083
  17. Tags
    Summary

    As the master of Death, Harry Potter had gotten himself into many a strange situation. However, he had never lived through anything quite like this.

    Series
    Language:
    English
    Words:
    7,729
    Chapters:
    4/?
    Comments:
    5
    Kudos:
    77
    Bookmarks:
    24
    Hits:
    1158
  18. Tags
    Summary

    The final battle has ended, and Harry Potter, exhausted and dying, waits patiently to succumb to his injuries so he can finally see his friends and family again.

    With his notorious luck of getting thrown into difficult situations, Harry instead finds himself shrunk and lost in a new world via the Fates, who may or may not have ulterior motives for sending him on this "Next Great Adventure."

    Welcome Harry to the world of Ninja!

     

    I am new to AO3, so any tips or recommendations you can give me would be FANTASTIC.

    Language:
    English
    Words:
    39,290
    Chapters:
    11/?
    Comments:
    54
    Kudos:
    345
    Bookmarks:
    112
    Hits:
    6378
  19. Tags
    Summary

    Everyone knows what rubric the 'wrong boy who lived' tag follows:
    Dumbledore thinks Harry's twin killed Voldemort, James and Lily neglect Harry in favor of his twin and/or send him to the Dursley's. Harry finds out about his inheritance, yaddy yaddy ya da. He becomes an all powerful lord with multiple titles and so on.

    But in this fic, James and Lily die, Dumbledore thinks Hari's older twin, Chandra vanqished Voldemort BUT sends both of them to the Dursley's his thought process is that if the twins grew up together, Chandra would do anything to keep his 'baby brother' safe, including sacrificing himself to voldemort. So he paid the Dursley's to look after the twins.

    He's not wrong, they grow up and Chandra would do anything to keep his brother safe. Same with Hari. What Dumbledore wasn't counting on was the fact that the Dursley's would give away Hari to an orphanage and lie to him for years that the twins were happy and safe.

    At the orphanage, Hari hit's his head on a table and loses his memories.
    How will they react to each other at the Hogwarts express?

    Language:
    English
    Words:
    2,913
    Chapters:
    2/?
    Comments:
    8
    Kudos:
    12
    Bookmarks:
    2
    Hits:
    269
  20. Tags
    Summary

    After the events of fourth year, Harry, his twin Amelia and godsister Dorea spend some time looking back and forwards. It is crystal clear that there has to be inter-house unity, friendship and co-ordination in order for them to get through the eminent return of Voldemort. So they decide to create the D.A - and discover friendships they never thought would ever happen. Will it work?

    Series
    Language:
    English
    Words:
    137,908
    Chapters:
    24/?
    Comments:
    17
    Kudos:
    9
    Bookmarks:
    1
    Hits:
    650

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