I am Loki of Asgard,
I was discarded to Earth, my father took my powers, I am weak now, unwanted and hated.
It wasn't long until i found this realm, the wizarding world. Everyone has magic, they can do things with just a wave of a stick.
I went to this place called hogwarts, every eyes were locked on me, there was a very old man, he said, "who are you? How did you get in here?" then I said, "I am Loki of Asgard, I came here to study the ways of you mortals," many whispered and the old man said, "mortals?" "heh, nevermind that," I said.
I was permitted to stay, if I do not bother the children study. For some reason, this person called 'Snape' asked me, "Asgard, where is that?" he said, "it's out of this world," I said, and he said, "hmph," and walked away.
"What is wrong with that person?" I asked the old person I met before, he said his name was 'Dumbledore', "he's just like that, never mind him," he said, but I am going to keep an eye on him, he seems worthy of my army.