It has been a long time, but Aries Prince still remembered that part of her life. The part where she was known as Rieka Lestari that included magic, adventures and a very magical castle that held one very large secret. Now, she wasn't to sure where her life was headed. Between aliens, research, UNIT and the Doctor, will Aries ever catch a break?

Jack & the 10th Doctor get caught in a potions accident well exploring Diagon Alley & ended getting de-aged. With the Brigadier as their guardian the boys go to Hogwarts in Slytherin with Harry & Draco. Just one of many things they alter well at Hogwarts. Slytherin Harry, Spanking Yaoi

'I'd like every of my characters to exist for real and I'd like to meet them, too'. Probably no one warned David Tennant not to make wishes if you're not prepared to see them come true. The Doctor has just lost his Companions to accept an absurd wish is just a way like another not to be alone, no matter if they are creatures with his same features. HUGE (fun) crossover!

What if, when the Prime Minister was told about the end of the war he decided to prepare for the next one. What if he was able to set in motion a plan to have a early warning system in place, and what if that early warning system came in the shape of a perceptive street urchin with a stubborn streak a mile wide. Who knows what will happen Manipulative Dumbledore Incompetent MOM

The Doctor and the Master, who look (and sometimes act) like eleven-year-olds, blow a hole in their universe and arrive at Hogwarts. Of course, after the Year That Never Was, the Master was cured of his insanity, and they became best friends again... And now they are causing trouble in other universes. Based off of Fairyqueen101's story. Updates twice a year. Working title.

A Ten/Donna Hogwarts AU. Donna can't get her spell to work.

Harry Potter is starting his fifth year at Hogwarts School of Witchcraft and Wizardry. There is a new teacher for Defence Against The Dark Arts called Dolores Umbridge, and a new subject and another new teacher called John Smith, and unbeknown to the students and teachers, a threat is growing deep below the school, in The Chamber Of Secrets

Reborn as a Time Lord, Harry Potter and his two companions travel to the planet Shan Shen, where they uncover a sinister force that prays upon the sick. Intelligent!Timelord!Harry. First in 'The Potter' Universe. Series 1.

After the Paradox Machine, The Doctor travels to 1995 against his will, the TARDIS seemingly manipulated by an outside force to bring him face to face with part of his past. Crossover

Harry always knew he was different, he just had to count to four to prove it. [Part 1 of The Master (of Death)]

Turning, twisting, falling, he just wanted to go home... It's the same... It's different... It's... It's... The hallows won't let their creator's Master die so easily, now, would they? [Sequel to Count To Four - Part 2 of The Master (of Death)]

Harry Potter, the Master of Death is bored. After three thousand years of living, dying and studying he decided it's time for a change of scenery and takes a tumble through the Veil of Death. With only a self-enchanted briefcase and the clothes on his back he makes his way through, life in ancient times, a very confused Doctor, a jealous Rose, a flirtatious Captain and Torchwood.

What if the Doctor was wrong about the leeway the Master had when his former friend stole the TARDIS? What if it wasn't 18 months, but 18 years? Grey!Harry; Manipulative!Dumbledore; no pairings yet.

Harry's idea of a quiet summer break between his third year and his fourth year go right out the window when not even a week into it, some bastard decides it's a great idea to chase him across the country. Doctor!Harry [One-Shot]

What would happen if the mugles would find out about the wizarding world? basically the history leading up to orphan 55. one-shot, quite dark (a lot of people die, its basically death with a little plot) some oc's (just people dying) and some characters occ for the sake of the story. (doctor who is only the last scene and apart from that one minor character)

It's not everyday that you find out that you're actually an alien, and that you were accidentally kidnapped as a baby by the Department of Mysteries. At this point however, Harry's not really surprised.

At a young age Harry met someone called the Doctor, he became his friend. Over the course of his school life the Doctor returned, in each of his incarnations. Leaving Hogwarts Harry continues to have adventures, visited upon by the Doctor's influences and further incarnations, friends, and enemies.

The Doctor really can't drive. Or the TARDIS threw him off course. Yes, let's go with the second option. Oooh! Look! A new time travel device! Fun! Oh, wait . . . River should not be kept waiting. Book 3 of Harry Potter, 11th Doctor.

What happens when our favorite captain runs into the Master of Death at a bar? (Captain Jack Harkness X Harry Potter)

Harriet Potter was many things. A witch, the Arcobaleno Sky, and the Mistress of Death. She was also the girl who grieved for her lost family. So Death took matters into its own hands and let a summon rip through the universe. Now she's stuck in another world in another time with a madman who owns a blue police box. Fem!Harry, Connected One-Shots. Kinda. HP/KHR/DW Crossover.

Hermione has to reflect on the passage of time when the Doctor shows up with a new face.

Harry stared at the Victorian clockwork man in confusion. This was not a Time Lord. This was not a TARDIS…Then why was he here? The Engineer was only summoned when a Time Lord or A TARDIS needed him to fix something. Harry/Doctor pairing, rating may change. You have been warned.

What sort of wizard uses science instead of spells? And what sort of Muggle flies around in a blue box? Luna Lovegood was nine years old when she first met the Doctor. From there, it's all good fun...in time and space. (For the main storyline, skip from Chapter 2 to Chapter 9. In between those is still canon to this fan fiction but not essential or particularly well-done IMO.)

Hermione is surprised to realize that there is a connection between the Doctor's unorthodox time-traveling family and the magical Weasley one.

With the walls of reality this strained, something like this was bound to happen at some point. A cracky crossover by [GingerBeer]. May include bad attempts at humor and many, many spoilers.