The Legionary
When a peace accord was reached between the Sentinals and the Roman Empire of Earth 12, one of the footsoldiers was left on our Earth as a representative. Internal bickering in the Senate meant that a more well known and respected candidate could not, or would not, be picked. They wanted to stay at home and manoevre for power. Some thought that by picking a mere footsoldier that would be seen as an insult by the people of Earth. Which goes to show that the Empire does not understand America and Americans. Marcus Lucius Cornelius Vascus finds the world peculiar. He does not get the whole One God thing. Or the fact that slavery has been outlawed. Or that soldiers no longer use shields but the police still do. He has become a member of the club to understand the world better and trades what he knows about his home and its structures for information on what happened to destroy the Empire here.
It is the one place where he lets his guard down. At other times he can keep his mouth shut. After all he served in a Legion and you get things done for right or wrong by doing what you are old and keeping your mouth shut.