Blooregard Q. Kazoo (simply known as Bloo) is the deuteragonist of the Cartoon Network series, Foster's Home for Imaginary Friends. He is the only character to appear in every episode. He is known as Mac's best imaginary friend. He used to live with Mac and his family (which consists of his mother and his mean-spirited older brother Terrance), but when Mac turned 8, his mother told him that he was getting too old to have an young imaginary friend blue blob and told him to get rid of Bloo. Because of this, Bloo now lives in Foster's Home, a place where imaginary friends who have outgrown their creators live and are well taken care of until they are adopted by another child. Bloo has permission to live there permanently as long as Mac regularly visits. So far, Bloo is the only imaginary friend that we know the full story of.
He was voiced by Keith Ferguson, who also voiced Basch in Final Fantasy XII, and his twin brother, Gabranth, in the Dissidia Final Fantasy series, and Lightning McQueen in Cars media. In the Japanese dub of the series, he was voiced by Noriaki Sugiyama.