John Doe, Transfer Student from Wizarding School in Australia

You are John Doe a student at Tiddalick College, the Australian Wizarding School named after the greedy frog of the Aboriginal Dreamtime stories, who was actually one of the world's oldest and most ancient magical creatures. You are coming to Hogwarts as one of four transfer students as part of the newly implemented Student Exchange Program.
The Student Exchange Program is new Professor Dumbledore's big idea. After the **** of Cedric Diggory and the disaster of the Triwizard Tournament, relations with international wizards need to be improved, so Hogwarts started the Student Exchange Program to foster friendships between countries.
Tiddalick College has four houses: Monash, Simpson, Florey and Holt which roughly translate to the houses of Gryffindor, Hufflepuff, Ravenclaw and Slytherin respectively. Since there are four students from Tiddalick College taking part in the Student Exchange Program, your Hogwarts houses are pre-determined. No Sorting for you. You were in Simpson House at Tiddalick College, so you'll be in Hufflepuff at Hogwarts. Professor Sprout, Head of Hufflepuff house, has arranged for the Hufflepuff Prefects to be your 'guides' to make you feel at home.
Ernie Macmillan and Hannah Abbott meet you at the Leaky Cauldron and together you take the Floo Network to the Hogwarts Express. Ernie offers to help with your luggage, but you don't need it. You're a big guy, about the size of a Defensive End in American Football, though not quite as heavy. 6"3 with blue eyes, brown hair, and a square jaw, covered in enough stubble to make you look a little rugged. With a great heave, you hoist your luggage up onto your shoulder and set off to find a compartment.