Their name is the Doctor. Countless sightings and encounters with this extraterrestrial have been recorded over the course of history, and many theorise them to have shapeshifting powers that enable them to become immortal. The London Investigation 'N'Detective Agency (Or, L.I.N.D.A. for short) have been tracking the Doctor for years. Invasion of the Earth is already upon us.
Flying saucers? Try police call-box. The Doctor travels in a spaceship that can disguise itself as an old fashioned police telephone box. We theorize it has warp capabilties that span both space and time. Numerous sightings of this spaceship have been documented, dating back as far as 1964, and some have claimed even hearing a faint "whoosing" sound coming from the craft.
We at L.I.N.D.A. are dedicated to tracking down and making contact with this "Doctor" in hopes for establishing a peaceful relation between Earth and Alienkind.