These are ideas for stories that I may or may not write. So if anyone wishes to adopt something simply let me know. This list will also be updated as ideas pop into my head. Each story idea will be labeled by subject and or crossover.
-harry potter
What if James Potter was not the son of Charles Potter and his wife like everyone thought. Instead he was a phoenix hatchling that Dumbledore stole from his nest. Knowing the true secret of the Phoenix that they are creatures with both human and bird form. Creatures with great power and if bonded with a wizard, the wizard is able to tap into said power. So what if Dumbledore gave the child/hatchlings to Charles Potter and his wife (who always yearned for a child but was unable to conceive). They then blood adopt him and claim him as their child (no one knows his true origins. Not even James).
James grows up and falls in love with Voldermort. He hides this from everyone. He gets preggers with harry. What if his relationship with lily was simply a cover (lily is a follower of Voldemort) so no one knows the truth of harry origins. What if Dumbledore finds out and in rage polyjuices himself to look like Voldemort and with help from "the rat" attacks James and Lilly. Forcing James to be bound into his phoenix form and binding him to Dumbledore as pet. Killing lily and tries to kill harry. But finds that harry too strong to kill (harry scar still happens but not as horocux). Deciding that 2 phoenix in his control would make him even more powerful he sends harry to dursleys and declares him to be BWL. Going as far as to using order ppl to polyjuice them selves to attack longbottoms and setting up false prophecy as well.
Dumbledore makes sure harry is raised abused and downtrodden. He sends hagrid to get him at 11 to make sure he has no clue about things he should know. He sets Ron and Hermione up to be his friends as well as attacking harry in school to make it seem as if it was Voldemort. Fawkes is really harry father James. This is why Fawkes is so affectionate to harry/comes to his aide even though he supposed to be bonded to Dumbledore.
Harry finds out who he is in graveyard at triwizard tournament. When Dumbledore kills Cedric under the disguise of Voldemort. The real Voldemort shows up and he and Dumbledore duel as dark side grabs unconscious harry kidnapping him. Harry wakes to sound of Severus and greyback arguing about his healing. Freaking out a bit harry tries to run for it but is caught. He finds out about his true parentage and that both fathers are really alive. His powers/abilities are unblocked. He also finds out he is destined to mate Severus and greyback.
He fights alongside dark to free James. Remus and Sirius crossover to dark side when they learn truth. his phoenix form is a dark phoenix. James form matches descriptions of Fawkes from book/movie. Wesley twins, luna, Neville, and Seamus all go to dark side giving harry allegiance more so than Voldemort. Dumbledore tries to force harry to bond with Ginny even going as far as making illegal contract. Which is broken when harry bonds with his true mates. With bonding harry gets preggers with twins. He has to hide this as he struggles to free James so that Dumbledore doesn't try to get his hands on his hatchlings.