<P> The programme takes place in a grassy, floral landscape populated by rabbits with bird calls audible in the background . The main shelter of the four Teletubbies is an earth house known as the "Tubbytronic Superdome" implanted in the ground and accessed through a hole at the top or an especially large semicircular door at the dome's foot . The creatures co-exist with a number of strange contraptions such as the Noo - noo, the group's anthropomorphic blue vacuum cleaner, and the Voice Trumpets . The show's colourful, psychedelic setting was designed specifically to appeal to the attention spans of infants and unlock different sections of the mind while also educating young children of transitions that can be expected in life . </P> <P> An assortment of rituals are performed throughout the course of every episode, such as the playful interactions between the Teletubbies and the Voice Trumpets, the mishaps caused by the Noo - noo, the footage of live children displayed on the screens in the Teletubbies' stomachs, and the magical event that occurs once per episode . The event differs each time; it is often caused inexplicably and is frequently strange yet whimsical . Each episode is closed by the Voice Trumpets and the narrator . The disappointed, reluctant, but eventually obedient Teletubbies bid farewell to the viewer as they go back to the Tubbytronic Superdome while the Sun baby sets . </P> <Ul> <Li> Tinky Winky (played by Dave Thompson and Simon Shelton in the original series and by Jeremiah Krage in the revival series) is the first Teletubby, as well as the largest and oldest of the group . He is covered in purple terrycloth and has a triangular antenna on his head . He almost always carries a red bag . </Li> <Li> Dipsy (played by John Simmit in the original series and by Nick Kellington in the revival series) is the second Teletubby . He is green and named after his antenna, which resembles a dipstick . Dipsy is the most stubborn of the Teletubbies, and will occasionally refuse to go along with the others' group opinion . His face is notably darker than the rest of the Teletubbies, and the creators have stated that he is black . </Li> <Li> Laa - Laa (played by Nikky Smedley in the original series and by Rebecca Hyland in the revival series) is the third Teletubby . She is yellow and has a curly antenna . Laa - Laa is very sweet, likes to sing and dance, and is often shown looking out for the other Teletubbies . Her favourite toy is an orange rubber ball . </Li> <Li> Po (played by Pui Fan Lee in the original series and by Rachelle Beinart in the revival series) is the fourth Teletubby, as well as the shortest and youngest . She is red and has an antenna shaped like a stick used for blowing soap bubbles . Po normally speaks in a soft voice and has been stated by the show's creators to be Cantonese . </Li> </Ul> <Li> Tinky Winky (played by Dave Thompson and Simon Shelton in the original series and by Jeremiah Krage in the revival series) is the first Teletubby, as well as the largest and oldest of the group . He is covered in purple terrycloth and has a triangular antenna on his head . He almost always carries a red bag . </Li>

Who were the actors who played the teletubbies
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