Animation Mac realizes that he accidentally created a new imaginary friend named Cheese. Cheese is allowed to stay at Foster's like Bloo, but Bloo has trouble dealing. He has no concept of personal space, he often doesn't use an inside voice, he has random and nigh intolerable outbursts of emotion where he's yelling. Cheese is an imaginary friend from the Cartoon Network television series Foster's Home for Imaginary Friends who is voiced by Candi Milo. He made his first appearance in the episode "Mac Daddy." Cheese likes a lot of things, including chocolate milk, potatoes, candies, games, and.