Roo, POOH, Winnie, and Eeyore are all characters from the classic children's book series, Winnie the POOH. Roo is a young kangaroo who is a close friend of Piglet, the timid little pig. POOH is an anthropomorphic bear who is the main protagonist of the series. Winnie is an anthropomorphic teddy bear who is a good friend of Piglet and Roo. Eeyore is a pessimistic donkey who is also a friend of Piglet. All four characters can be considered friends of Piglet, making them all 'Friends of Piglet'.