Harry Potter x Slenderman/Creepypasta/Marble Hornets
* Harry is Slender's oldest Proxy; having Snapped in the 1990s. This makes Harry Second in Command and Head Proxy.
*Harry, Bloody Painter (Helen) and Sally are triplets. Harry and Helen are near identical, the only thing different in their appearance is their eyes (Harry has green and Helen has blue). After the triplets were born: Harry was declared the Boy-Who-Lived; Dumbledore, not wanting to risk anything, placed various blocks on Helen and Sally's magics to make sure they couldn't get their letters or be found via magic and then sent them to America. From there, the two's stories took place; except snapping caused Helen's magic to no longer be restrained. This means that he is aware that something is missing, but he doesn't know what or how to find it. Harry eventually snaps himself which causes the suppressed magical bond between him and Helen (being "identical" twins) to re-establish itself. Helen feels Harry snap just as Slenderman senses a new pasta being "born".
*Harry finds out he has siblings, and they are triplets. He also finds out they are in America (or were) and that his sister was raped and murdered by her adoptive uncle. this just adds to his stress and pushes him that much closer to snapping. He does research into creepypastas to find more information about his missing/murdered siblings. He realizes there is little to nothing he can do to find them or be with them and fears they might not want anything to do with him since it doesn't seem like pastas stay in touch with family members not pastas as well (or they murder their family, mostly because their family is the reason for them snapping and becoming pastas in the first place). Instead, he focuses on making those who hurt him and his siblings pay for hurting them: Dumbledore, the Dursleys, the Weasleys (selectively), Hermione(? Op.), and Sally's adoptive uncle Jhonny.
*Cannibal Chef PastaHarry.