
Eight-year-old Mac and his imaginary friend Blooregard Q. Kazoo (or "Bloo" for short) often get into fights with his 13-year-old brother Terrence. When Mac's mother tires of this behavior, she tells him that he has outgrown his age to have an imaginary friend and must get rid of him. Crushed by overhearing their argument, except for Terrence, who is rather pleased, Bloo later comes across a TV commercial for "Foster's Home for Imaginary Friends"--"where good ideas are not forgotten," according to the motto.

Grey DeLisle
Frances 'Frankie' Foster / Duchess / Mom (voice)

Keith Ferguson
Bloo / Host / Friend #4

Tom Kane
Mr. Herriman / Nature Show Host / Friend #5 / Funky

Tom Kenny
Eduardo / Australian Host / Scissors / Friend #2 / Friend #6 / Unicorn #2 (voice)

Phil LaMarr
Wilt / Announcer / Friend #3 / Snooty Dad (voice)

Sean Marquette
Mac (voice)

Candi Milo
Coco / Madame Foster / Friend #1 / Unicorn #1 (voice)

Tara Strong
Terrence / Sultry Woman / Boy / Snooty Girl / Snooty Mom (voice)

My Fairy Girl
My Fairy Girl

Bogus
Bogus

The Adventures of Sharkboy and Lavagirl
The Adventures of Sharkboy and Lavagirl

May
May

Drop Dead Fred
Drop Dead Fred

Opal Dream
Opal Dream

Harvey
Harvey

Heart and Souls
Heart and Souls
The Curse of the Cat People
The Curse of the Cat People

Day-O
Day-O

Kanaval
Kanaval

Donnie Darko
Donnie Darko