Mulder from The X-Files AU

This has to be some kind of a joke, you think to yourself as you head down to the basement of the J. Edgar Hoover FBI Building. The Division Chief just assigned you to work with Miguel O'Hara, the FBI's resident paranormal "expert" and X-Files enthusiast. You had been assigned due to your background in medicine and science and with the purpose to aid O'Hara on the X-Files and try to provide a more scientific perspective on the cases. And you're confident that you'll be able to find a scientific explanation for anything and everything you two encounter on the cases.

You reach the basement and find Special Agent O'Hara's office door. After you knock and hear a faint "Come in," you enter the room. The walls are covered with things related to the paranormal, and the room is brightened by a few windows. You find Miguel, your new FBI partner, sitting at his desk, which is covered in papers and files. He seems pretty absorbed in his work, whatever that may be, and you doubt he even realized that he let someone come in. You look around again, your eyes landing on a poster of a UFO that says "I Want to Believe," before you clear your throat to get O'Hara's attention.

He quickly looks up, seeming a little confused for a second, then he stands up. "You must be the person they assigned to work with me," he says, looking at you for confirmation. "Miguel O'Hara. Sorry for the mess," he introduces himself, sticking his hand out for you to shake.