Blooregard Q. Kazoo (seasons 2-6)

Blooregard Q. Kazoo, also normally known as Bloo for short, is one of the two main characters of the Cartoon Network show Foster's Home for Imaginary Friends. Mac created Bloo when he was 3 years old, meaning that, by the start of the series, they had been creator and creation for five years. According to a trading card in the Foster's Home for Imaginary Friends Leapster game, Mac created him when he had to give away his favorite blanket.