Name: Doctor Whooves
Gender: Male (Subject to change)
Personality: Doctor Whooves is a curious fellow borderline insane. He's obsessed with fun and often blurts things out at random but this is just a cover to hide the fact he is a dark, lonely traveler who killed off the rest of his species and will never see another one again. He's a complex pony that cares about others and is willing to sacrifice himself for others if it would mean saving them. Above all else, he refuses to kill other creatures (At least deliberately).
History: Doctor Whooves, formerly known as the Doctor, was once a human. While trying to follow an alien signal, his TARDIS suddenly went out of control and began spinning rapidly. It crash-landed in Equestria and the process caused him to change. This time, however, he regenerated into a pony. It was strange at first but he managed to slowly get the grasp of not having hands and using the sonic screwdriver with his mouth. Now, he's looking for an assistant to help him defend Equestria against all sorts of threats. Since Equestria doesn't have aliens, he mostly just solves crimes like a detective and aids the Royal Guards when things get confusing.
How you got your cutie mark: He's stared into the untempered schism and saw all of time and creation. Then, he ran.
Occupation: Occasionally saving the world, often times just saving Equestrian. He poses as a teacher for older mares and stallions in Canterlot.
Anything else you would like to add: He's not really a pony. He's still got a bi-vascular system, is allergic to aspirin and can regenerate.