Bruce Wayne become a teacher in Hogwarts and his "children" become students at that school. They join Harry Potter and his friends to fight Voldemort and Death Eaters. Bruce Wayne as Batman probably will not appear although it is a possibility.

After the death of Sirius, Harry Potter finds that he has a sister and more family than the Dursleys from his mother side. He reunites with his family in Gotham and together they fight against both the corrupt Ministry, Voldemort and Dumbledore.

Betrayed, Harry is thrown into Arkham Asylum, far away from his supporters in England. Odd things begin to build up quickly however. What is Harry's connection to Ra's Al Ghul? Why is Harry's magic going haywire? No Slash. Pairings will be decided later

Ten years ago they won the battle: Voldemort was dead. They didn't realize that at the same time they had lost the war. Now, a shadow lurks over the Wizarding World that threatens to change everything. AU Harry Potter.

Seeing his adoptive parents killed at the hands of a Death Eater, a young Harry swears vengeance on those who prey on the fearful. Vowing never to use a wand, the weapon that took his parents away, he is taken in by Batman, to be forged into legend.

Lost and alone and trapped in 11 year old bodies Harry and Ginny can't remember much so they become Alpha and Omega, surprises to come as they enter Gotham and find revenge isn't always the best Dark!Harry Dark!Ginny Powerful!Harry Powerful!Ginny Insane

Harry joins the League of Assassins/Shadows and is trained. Eventual full crossover with Batman. He will be at odds with Batman. Harry/Ivy Pairing as the main pairing. Talia al Ghul, Cassandra Cain, and Poison Ivy will be included in the whole deal also.

The war cost him everything, but with the help of his funny friend, he can put the peices back together.

The line is blurred between right and wrong. He will turn his back on them, and start over somewhere new. They made him like this; now they will deal with the consequences. A Harry Potter/Batman crossover.

Did you ever wonder how Alfred got his start? Well, he wasn't always called Alfred. Once Upon a Time he was called Harry.

To hopefully ease the pain my lack of updates to Two's a Crowd causes, here are some extra things that I couldn't place in the main stories.

Harry's mother comes looking for her son, and its not Lily Potter. Will the Hogwarts and the wizarding world know what to do when Harry is raised far away from the streets of Little Whinging, and out of Dumbledore's control? Rated MA for later chapters.

Over the centuries, Nicholas Flamel has been known by many names and has lived many lives. This is the story of one of them.

Batman is plagued by dreams of a forgotten past. Can the appearance of a man from those dreams unlock the secret of his dreams and help him reveal the secret of his hidden past.

After Dudley is hurt by accidental magic, Vernon decides to abandon Harry while on a business trip in the US.

What happens when Harry ends up in Gotham City and runs into it's most infamous criminal?

Batman is having car trouble, but everyone else is amused. And people wonder why he hates magic? Features a surprise pairing.

A post HBP story, Harry isn't the only one with things in his past that drive him. Half a world away a new ally will find out about the Wizarding World from a most unlikely source that leads to a world he never knew about and dangers he didn't expect.