Harry Potter x TF2
*Lily and Petunia are actually Australian/New Zealand and are the younger sisters of Sniper. The three's parents moved to England when the three were still kids. Sniper moved back to Australia, but Lily and Petunia stayed in England and got married. Sniper is Harry's uncle.
*Sniper and his parents moved to England when Sniper was a kid but before Lily and Petunia were born. Because Lily is a natural, English-born citizen, this is why she was accepted into Hogwarts and why she and Petunia stayed in England with their parents, but Sniper moved back to Australia (as well as the fact that Sniper and his parents had started arguing about a lot of stuff which came to ahead when Sniper became a sniper). Sniper is Harry's uncle.
*Harry is Sniper's son. (Random OC or another character not Lily.)
*Harry is Sniper and Lily's son. Lily slept with Sniper when he was in England on a job before he joined RED/BLU and Lily married James. Lily was unsure if James was the father or not so had a hereditary test preformed.
*Sniper is both Harry and Scout's father (there was another story where Sniper was Scout's dad instead of Spy. Can't remember the name of the fic though).
*Harry is the Pyro's son.
*Harry is the Pyro.
*Harry is Scout's brother. Dumbledore stole him, but he found out. (Harry becomes RED's/BLU's Pyro to be with his brother?) (Spy is his father?) James is Harry's uncle.
*Scout's mom is James' (older/younger) sister. She is a squib and was partially disowned by the Potter's as a result, so she moved to America (and had 8 sons). The Potters did give her a vault that was in her name alone and tied to a muggle bank account so she can take care of herself and later, her sons. Scout's mom is Harry's aunt, Scout (and his brothers) is (are) his cousin/s. Spy is his uncle?
*Harry is Miss Pauling's son (who was stolen?/willingly given up for adoption?).
*Harry is Miss Pauling's (older/younger) brother.
*Harry is Miss Pauling's twin.
*Harry and Miss Pauling are siblings and the Potter's children. Miss Pauling is 5 years older than Harry. Lily and James got married because Lily was pregnant at 16 with Miss Pauling (either because of the wizarding world's view or because of lily's own fears and the muggle world's views).
*Lily and Petunia are only half-sisters. Lily is Lily Ludwig, not Evens. Medic's daughter.
*Lily and James only got married because of Dumbledore. Lily has Harry with (Merc of your choice). (Prophecy invalid.)
*Harry is the brother/half-brother to (Merc of your choice).
*Harry and Miss Pauling are Medic's children?
*Harry is the offspring to two mercs (at least one of them is a magical creature and a hermaphrodite and can both sire and conceive a child).
*Harry is Spy's son. Either by Lily or someone else.
*Harry and Miss Pauling are twins and Helen's (the Administrator) children. This would explain Miss Pauling's unshakable loyalty to the administrator and why the administrator only seems to trust Miss Pauling even a fraction (which seems to be more then she trusts anyone), especially when sending Miss Pauling out on jobs. There are a few ways this could go: either just Harry has magic, both Harry and Miss Pauling have magic, or all three have magic. Or Helen is a squib, left the magical community because of this and started making plans; plans that might have altered after the twins were born and showed signs of having magic.
*The Mercs either have magic or are squibs. Either all have magic, all are squibs or are a mix of both.
*(Most/All of) The characters of TF2 are witches/wizards and are teachers/staff of an international school of magic. Helen is the head mistress/principal, Miss Pauling is Helen's personal assistant/deputy head mistress/vice principal, Saxon Hale is super intendant? So on, so forth. Harry (and a few other HP characters?) wind up going to this school instead of Hogwarts.