Thanks to the miracle of contrived plots, Harry Potter is adopted by Rick Sanchez. Harry and Morty are invited to Hogwarts, etc. Insert obligatory bad summary.

After being delivered to the Dursley's doorstep like a jug of milk, Harry is rescued by a mysterious stranger before they even know he was there. Nearly ten years later, he is returned, but not as the boy Dumbledore expected. Rated T and will always be rated T.

In which Harry gains an unusual familiar. [rating may go up]

Just Suppose Harry hadn't heeded his godfather's advice, and actually lost his temper at his trial? Time travel fic and title is 'Back to the Future' joke.

Broken and defeated, the War long since lost, Harry enacts his final desperate gambit: Travel back in time to the day of the Third Task, destroy all of Voldemort's horcruxes and prevent the Dark Lord's resurrection…all within the space of twelve hours.