Season 4

Bloo gets jealous when Mac is chosen to be the sidekick of an imaginary superhero friend.

As everyone gets ready to take the annual house photo, Mac and Bloo notice another picture that was taken years ago.

Mac and Bloo have a fun day by themselves in the mansion.

Bloo is teased by a child who lives across the street.

Mac is surprised when Bloo and the rest of the gang show up at his place for a slumber party.

Mac doesn't want a surprise party.

Bloo takes Mac for a secret ride on the Foster's bus.

Everyone gets locked out of the home, and only Cheese knows the code to get back in.

Bloo wants to open his own home for imaginary friends when he feels dejected.

Chaos ensues when a new imaginary friend is created to cheat on a history test.

Mac and Bloo are imprisoned by evil characters unwittingly created by Goo in her sleep.

Wilt runs away in search of his creator after he receives no visitors at the annual picnic, so Bloo and the gang head out to find him and discover some interesting things about Wilt's secret past along the way.

Wilt runs away in search of his creator after he receives no visitors at the annual picnic, so Bloo and the gang head out to find him and discover some interesting things about Wilt's secret past along the way.