Destiny

From the minute Seon was born, it felt to him as if his whole life was planned out for him. He was told what he was going to be when he grew up, and as he grew older, Seon didn't like it one bit. But as he came to understand a bit more on who he was to become, he learned to respect it and be thankful he was honored with such a rare opportunity.
Although, one day the infamous race, the Dasani (from the planet Dasan) unexpectedly invade the planet Kaeton. Seon eventually flees the planet to keep their most sacred belief alive, in case Kaeton was lost to the Dasani. Wanting to go and fight the Dasani, Seon reluctantly fled in a (high-quality) escape pod (that had a one-way teleportation feature), and quickly selected a random, yet Kaetonian-safe (evironment/surviving-safe) far-away planet: Earth. Although, Seon ended up in the Cretaceous period (144 million years ago). With a severely-damaged escape pod and no way of traveling (time-wise or physically), he adapted as time went on, until present day came along. (Since Earth is so far away, every thousand years is like minute at Kaeton.)
As Seon is in jobs, he eventually quits them and moves after enough jobs in one city, as to not cause suspicion when his colleagues retire and he is still young. (He started to wear colored contacts when they were invented. Before: sunglasses, hats, etc.) He also changes his name occasionally. Eventually, he takes a police job as a constable for the South Wales Police in Cardiff with a new friend named Gwen Cooper. After a little over a year of working as a policeman, Seon is helping Gwen (he offered earlier at work that day) move some of her things into her new workplace. Though, she only told him it was called Torchwood, and she'd still meet him occasionally, as Torchwood sometimes worked with the police.