Hello again! So I've ready some stories with the 100 characters in this Harry Potter au, but there aren't many and I'm obsessed with this idea. This way, I decided to come up with something. I just hope it's any good haha anyway, enjoy!

I don't own the 100 or Harry Potter. If I did, I would be such a happy girl.

Also, any mistakes are mine.

I.

"Ah, right, then. Hmm, right. Okay.
You might belong in Gryffindor,
Where dwell the brave at heart,
Their daring, nerve and chivalry
Set Gryffindors apart… GRYFFINDOR!"

Bellamy could remember perfectly the night he was sorted. Wise words were always spoken by that cocky bold sorting hat. He had it all in him, the bravery, the courage, the recklessness and that famous short temper of his that defined so well the gold lions of Gryffindor.

Ready to start his final year at the renowned and well-known Hogwarts School of Witchcraft & Wizardry, Bellamy indeed had it all and couldn't complain about his life but he needed to admit that the road to where he was today hadn't been easy. Holding the position of chaser for the Gryffindor Quidditch team, he was also proud to call himself the team captain. After his decision to become an Auror in his fifth grade, Bellamy Blake had been working hard to achieve that goal since then.

"You'd need top grades for that. They ask for a minimum of 5 N.E.W.T.s and nothing under "Exceeds Expectations" grade, I see. Then you would be required to undergo a stringent series of character and aptitude tests at the Auror office. It's a difficult career path… They only take the best. Are you sure you're ready for this?"

He knew it would be tough but he was a little bit taken aback when his Defense against the dark arts teach broke it down to him. However, his will and determination to protect those that couldn't protect themselves drove him to work harder than ever before. He needed this like he needed air to breathe in and breathe out; it was finally his chance to do something that was worth it.
The older Blake also carried with him a feared reputation because everyone knew better than to mess up with him. Hogwarts couldn't ever forget the day that Bellamy stood up to some jackasses that kept calling his little sister, Octavia Blake, a Mudblood, a Dirty-blood and even the scum and shame of the Slytherin House, for simply being a muggle-born.

Octavia Blake was a fiery, strong and independent brunette and even though it was so hard for her big brother to actually admit, she didn't need protection at all. She handled her business like no one and couldn't actually resist a good fight. She was proud, confident and ambitions but also careless sometimes. The younger Blake was currently in her fourth year, surrounded by so many friends and boys that would literally throw themselves at her and then being threatened to death by the one and only Bellamy Blake. Stepping up to the plate of the family reputation, she was also a chaser for the Slytherin Quidditch team, a surprise that made her older brother explode of happiness. She was too precious for this world, his pride and enjoy and everyone knew it.

Maintaining and having such a say in the business that went around the walls of Hogwarts, everyone knew when to get off his way when he stepped into the corridor with his crew. Bellamy couldn't care less about the House they were in; he just wanted trustful and loyal people around him. So, he presented himself with Lincoln, the pure-blood, strong and tall, with a body to die for, Beater for the Gryffindor Quidditch team and in year 7 like him; Miller, the half-blood, the loyal and calm Beater for Hufflepuff and in year 6 and, finally, Murphy, his shadow, the protective and arrogant keeper for Slytherin and in year 7 as well.

Everyone did everything they could to get away from Murphy, not trusting him one bit. With his difficult family situation, this means, with a father in Azkaban, blamed for murdering his muggle mother, everybody gossiped about him and called him "murderer like your dear father". This all stopped the day Bellamy took him under his wing, making the others fear him instead, fear to say those terrible things. (if you can't make them love you, make them fear you, am I right?). Bellamy knew better than the mistakes that your parents had done, didn't define you or meant that you would do the same.

2 years later after Bellamy's sorting, a blonde little girl with really blue eyes made her way to the front of the Great Hall to confront the sorting hat herself. She was so nervous and excited at the same time. She had been waiting all her short life for this. Supporting high expectations that came from her mother, the scary but also really fair Abby Griffin, Head house of Ravenclaw, a specialized medical Herbology professor and previously, a healer. Clarke Griffin wished with all the strength and force she had in her small, fragile body to be sorted into Gryffindor, just like her father. Jake Griffin had passed away 2 years ago and had left a very wrecked, angry and numb Clarke behind. On the other hand, Abby was confident that she would be a Ravenclaw just like her. A pure-blood, very intelligent and determined Ravenclaw.

"Humm, I sense so much cleverness but also a very big ambition.
Okay, hum right… You could be great, you know,
And Slytherin will help you on the way to greatness,
No doubt about that… SLYTHERIN!"

And just like that, in a matter of seconds, all the hopes of a very sad, shocked and surprised Abby Griffin were destroyed.

Entering her 5 year, Clarke was a prefect for Slytherin, having the best grades in her year. She was motivated by her objective of becoming a healer, not because of her mother of course, but for the need of helping others and having a mark of her own in the world. This blonde one worked really hard and wasn't about to quit everything she hoped for just because she was sorted in Slytherin. Now, she couldn't see any clearer, she had always belonged in Slytherin, possessing the ambition, the self-preservation and strong leadership that any silver and proud Slytherin had.

After the sorting, Clarke had to listen to Abby ranting for half an hour about how absurd it was that her only daughter had been placed into Slytherin when she was clearly a Ravenclaw. She didn't keep the anger and disappointment she felt in that moment. With time, she was able to see through this, but always having a say in everything that Clarke did. The older Griffin would make sure that Clarke would get the future she deserved and the best opportunities, starting with the pressure she made every time she talked about how Clarke should get closer to Finn, a sweet and selfless seeker for Gryffindor and most importantly, a pure blood. And this matter because? Well, because Abby wanted to carry with the tradition in the Griffin family, an entire pure blood household.
What she didn't know was that Clarke despised Finn, knowing that he was a cheating bastard that could never settle for only one girl. So, the younger Griffin had to endure all the rants and "advices" her mother gave her, to just ignore them later. She also didn't know that Clarke was catching the eye of a very strong-headed and popular, with a dominant energy, Lexa, a 6th grader and a seeker for Slytherin.

Clarke never imagined that she would find a best friend, or did she ever think it would be in Slytherin. Octavia Blake and Clarke Griffin got along from the moment they met, the moment when Octavia was sorted into Slytherin, leaving a very shocked Bellamy Blake in the Gryffindor table and sitting herself next to Clarke. And through Octavia, she met her older brother, a handsome but also a seriously annoying and a class A asshole, Gryffindor. Even though, O, as their closest friends called her, was a year younger than Clarke, they were always together after classes.

Just like that, they formed their little cosy group of friends that consisted of Raven, from year 6 and an inventive, clever Ravenclaw, reckoned as a force of nature and a keeper for Ravenclaw, Monty, a 4th grader and also from Ravenclaw, Jasper and Maya, a cute couple from year 4 of Hufflepuff.
Sometimes, Bellamy, Lincoln, Miller and Murphy would also join them for just one reason like they said, that is that Monty and Jasper were the best producers of the strongest Butter Beer in Hogwarts and they couldn't pass off that opportunity of a good drink and an awesome time.

Breaking her trance, Clarke heard a really excited and free-spirited Octavia, in her dark robe with the silver and green Slytherin symbol shining through, calling for her.

"Clarke! C'mon, we're going to be late for dinner"

Clarke laughed at her friend's impatience and replied "Alright, alright, I'm coming. None of us want a scary hungry Octavia, we get it."

With a smile that reached her eyes, Clarke could feel in her bones that it was going to be a good year.

So, yeah, here it is. This chapter is more of a filler, but I needed to give some introduction to the characters. 4am again, I need to stop. I'll post it now and hope to God that I'm not that sleepy and didn't make too many mistakes hahaha

Anyway, hop onto this crazy bellarke train ride with me and leave a review, telling me what you think!

Love, Brooke!