An American Animagus in England
Disclaimer: I do not own any part of the potter verse just my story.
John woke up before everyone else that day it was a Sunday. As he got out of his bed he noticed it was a clear day though very early. He walked down to the great hall and saw that the only other person down in the hall was professor Snape who eyed him with a cold hard expression. John nodded in his general direction and sat down at the Gryffindor table and poured himself a cup of coffee. As john polished off his coffee he looked up to see a large grey cat with deep emerald eyes walking down the aisle between the tables. John could feel the signature of animagi magic from a mile away he got up and said professor may I have a word with you. The transfiguration professor and head of Gryffindor changed back to her human for and said "Certainly though I would like to know how you recognized me for few students do in my changed form." John nodded and said, "few would though not many are also animagi like myself I would like to know if I can practice that type of magic here." She nodded and said "of course though if you are anything like your mother I would wait until you get outside. Mature male griffons are quite large and the house elves are worked quite hard enough without you breaking the tiles of the main hall and destroying the tables." Snape stood and laughed "I had heard that your mother was an Animagus though there hasn't been one in seven hundred years that could manage more than a large elephant." John turned around and looked at him with fire in his eyes and yelled "Insult me if you must but if you insult my mother again I will be forced to bring your greasy haired hide to heel Snape." With a crack of thunder Dumbledore appeared out of thin air and stood between the two looking up at Snape he yelled "Enough this ends here Severus you know better than to insult the ones who died in the fighting." He looked at john and says "I will not have you causing trouble though you do have the right of it." Minerva looked at John who just nodded and turned on his heel and left the room the cowboy boots he was wearing clacking against the granite floor and echoing down the hall. She looks around and says "I should go speak with him he needs to calm down if he is like his mother he doesn't have a good hand on his abilities yet!" When Minerva caught the young man he was sitting on the edge looking out over the valley and casting a charm that she had seen many times. She sat next to him on the edge and said "I understand the want to see your mothers face again" she pulled out her wand and cast a similar spell that showed a younger version of herself and Andrew her husband standing in a clearing with a dragon curled at their feet. John looked over and smiled "I didn't know Andrew but my grandfather said he was a good man." Minerva smiled and said "Yes, he was. Did you know he was a member of the guard like you?" John shook his head "No but that was before my time I knew there was a lot of overlap with the order of the phoenix but I didn't know it went that far I just thought it was my mother James Lilly and Sirus who were members." Minerva looked at john and said "Young man Andrew was one of your grandfather's personal guards during the war he was visiting the auror station that Voldemort attacked when Andrew was killed." John looked back down "I'm sorry professor I didn't know grandpa didn't talk about the first war much he was ashamed that so many of the guard died." Minerva immediately felt ashamed of herself David had done well but he had lost a lot of people to Riddle and quite a few war dragons as well. John pulled out his wand and pointed it at his arm and muttered a very advanced spell for someone his age and the dragon on his arm began to move crawling down to his hand and jumped down onto the railing growing to about the size of a large cat the dragon swung its head around and set it on John's lap. John looked over at the amazed professor sitting next to him and said "This is Ares we are a bonded pair a warrior team he was given to me as a hatchling by my grandfather he has grown up with me he was my first friend and we have fought for each other on many occasions he is fully grown but chooses to live on me so he can learn the human ways as he calls them and he wishes to tell you that Andrews dragon was his Sire and Lilly's his Dam." Minerva was stunned this young man had just pulled a familiar off of his arm something that she had never been able to master and what's more it was a fully-grown war dragon and a beautiful specimen at that large horns strong wings large and vicious sharp claws. Minerva finally found her tongue and said "He's beautiful I've never seen a dragon with that shade of blue for scales and those piercing green eyes could he grow to full size I'd like to see him in all of his glory." John nodded and Ares flew to the middle of the court yard john threw a short spell at Ares and he began to grow by the time he was done Ares was forty feet long and nearly nine feet tall with a wingspan of at least seventy feet when he finished growing he looked up at the sky and let out the loudest roar that Minerva had ever heard this dragon was definitely one of the largest in the world if he wasn't the dominate male he surely would be in a few years. At the sound almost, all of the students and all of the teaching staff came rushing out of the great hall to see what was happening many of the teachers had their wands drawn. Ares looked over the crowd and watched the professors with the wands warily John walked around the dragon and was greeted by the headmaster, Harry, Ron, Hermione, and Hagrid who just stared at Ares with a look of wonder in his eyes. Albus eyed the dragon with suspicion and said "I thought that dragons were controlled very strictly. Where did this beast come from?" John shot him an angry glare and said "This is no beast this is a war dragon he is bound to me as a member of the guard he will not harm anyone." Then he turned to the crowd and said "This is Ares. He will not harm any of you. He is a War Dragon. I Trained him Myself. I am his rider which I will show you now." As he walked by He grabbed Hermione's hand and pulled her up into the saddle with him. He wrapped one arm around her waist and grabbed the horn of the saddle with the other. Ares looked around and spread his massive wings, driving them down the crowd was struck with the seemingly gale force winds from the massive wings. As they climbed upward Hermione screamed she was not fond of heights and the few times she had flow a broom it was one of the school brooms and they were old and probably should have been replaced years ago. John squeezed her and said "It's alright I'll keep you in the saddle." Hermione eventually opened her eyes and was taken aback she had never seen the castle from this high up before it was beautiful. Maybe this is why Harry John and Ron lied it so much in the air. As she was admiring the view she caught a glimpse of John as he was looking around and moving with Ares the sight was amazing he seemed to know just when the saddle would move and how to react. She leaned back and asked "How do you do that are you just that used to the way he moves?" John didn't answer her for a while but looked at her with a look in his eyes like he was wrestling with something inside of him then he seemed to make up his mind. "It's not like that though I am very used to the way he flies but in truth we share one mind more than we are two individuals." Hermione was confused "What do you mean you share a mind?" She asked John "I will explain on the ground its to loud up here." As he said that Ares was dropping slowly john smirked and he told him "dive fast let's see if she breaks." Hermione screamed and held on tight as Ares dropped into a steep dive towards the black lake just as it looked like they were going to hit the water Ares snapped his wings open and glided towards the island in the middle of the lake. As soon as they touched down Hermione looked around and slid down Ares's front leg when John followed her down she slapped him once he was on the ground. Ares turned his head toward them and said "she has fire in her I like her I will tell the others to bring the eggs we will see if any of them hatch for her right." John nodded and rubbed his cheek then said "I'm sorry about that I needed to see if you could take the plunge and not." She looked back at him and said "You could have told me I hate heights the few times I've ever flown my broom felt like it was going to fall out of the sky." John looked at her and said "I'm sorry I didn't know I can teach you on a better broom if you would like." Hermione smiled that wasn't exactly what she wanted to hear but it was from the heart he really was sorry. When she turned around John wrapped his arms around her and said "I'm sorry but if it makes this any better you passed the test. This test was to see if you could take the fear of falling out of the sky like you did the dragon council would like to see if a dragon would take to you as a rider like Ares took me."
Soo sorry this has taken so long to get out. There are a few things I want to say about this chapter I got the boding idea from a story I really like also in the Potterverse just infinitely better than mine it is called Witches Secret by Selector and the dragon things I kind of pulled but changed from the inheritance cycle the first one is Eragon if you don't know the series by that name.