'Nero'

This mysterious time traveler seems to go by the name 'Nero', but it's never officially been said whether or not it's truly his name. It's heavily hinted at that his real name hasn't actually be revealed in the current time he's in. Nero is pretty factual, and to-the-point. He seems to be a walking encyclopedia, which would make sense to what contraption he has stuck to his arm. He must wear his wristwatch at all times, since it allows him to shapeshift and take the form of another animal, human, or object, as long as he's seen them before and has enough knowledge of who or what they are and how they act. He often wears glasses with false lenses, to blend in with crowds a bit better, but he can see perfectly fine without them, since his glasses have no actual prescription.