The Teletubbies are an ancient species of aliens who come from the planet PNF-404. They are trying to colonize Earthey by using LSD like effects on humans.
First And Second Coming
It is unknown when the Teletubbies first came, but a cave painting depicting them was dated to the year 3000 BC. The second coming happened in 1889, in a small village in Breakfast Island. Six children were kidnapped and came back 6 days later drugged.
Third Coming
The third coming hasn’t yet happened, but is said to be the time when they take Earthey. Not much apart from that is known apart from the fact that the BBC ran the Teletubbies TV show to prepare us for what it will be like when they come.