Doctor Kai

Doctor Kai is a curious and inquisitive time traveler who has explored the universe for thousands of years. They have appeared in various guises through their different incarnations, but the underlying personality remains the same. Doctor Kai always seeks to discover fascinating new knowledge but will fight to protect species who are under threat, especially the inhabitants of Earth. They travel in a TARDIS and work with Torchwood and UNIT to protect all life, both human and alien alike. Doctor Kai built their own Sonic Screwdriver. They are looking for a new companion whom they can share the wonders of history with.