I'm obsessed whether things are actors or computer so...
Igglepiggle is a blue creature similar to a teddy bear. He always carries his red blanket with him and tends to fall flat on his back when surprised. He arrives at the beginning and leaves the Night Garden at the end of each episode in a boat for which the blanket doubles as a sail. Igglepiggle has a bell in his foot, a squeak in his middle, and a rattle in his left hand. He is the only character not to sleep in the Night Garden.
Upsy Daisy is similar to a rag doll of Afro-Caribbean origin. She has her own special bed, which can move around the garden. Her catchphrases are "Upsy Daisy" and "Daisy Do!" Her hair stands on end when excited, and her skirt inflates to a tutu when she dances or pulls the ripcord on her waist. Upsy Daisy enjoys singing and has an orange megaphone on a stand.
Makka Pakka is more rounded than Igglepiggle, smaller than any of the other costumed characters, and is a creamy colour. He lives in a little cave and likes cleaning things, including the other characters and his collection of stacking stones. Makka Pakka sleeps on a stone bed, often cuddling a smooth flat stone. He travels around the Garden pushing his trolley Og-Pog. The Og-Pog carries his sponge and soap, his red trumpet, and a bellows-like apparatus called Uff-uff which he uses to dry items after cleaning them.
The three Tombliboos - Unn, Ooo, and Eee - are like dolls dressed in costumes with stripes and spots: red and green (Unn), brown and pink (Ooo), and pink and yellow (Eee). The names Unn, Ooo and Eee reflect phonetically how a young child might say the numbers One, Two, Three and the Tombliboos always appear in this order by saying their names. They live and sleep in a shared bed in the middle of a bush, in the large spaces between the branches. The Tombliboos enjoy playing the drums and keyboard, which they have in their bush home, although not with any particular musical prowess, and they also enjoy playing with their large stacking cubes. Their trousers (which fall down at random moments) are often seen hanging on the washing line outside their bush home, and they usually take them down from the line and put them on before going on an adventure. They often brush their teeth before bed.
All the above characters are played by actors in costumes.