Mac starts to doubt Santa’s existence when a hoard of imaginary Santas appear. Bloo sets out to prove that he’s real.

When Mac accidentally imagines another friend, Bloo suffers sibling rivalry with the newly arrived and very odd Cheese.

Mac and Bloo fall for Frankie and become wildly jealous of each other and everyone else.

The home needs a new roof, so Bloo tries to fund it with a cookie drive.

Although Eduardo is infested with fleas, he soon befriends them, but Frankie and Mr. Herriman want to get rid of them.

Mac and the crew win a trip to Europe.

The house is filling up with imaginary friends, thanks to a girl named Goo.

Mr. Herriman tries to conceal his carrot addiction, which causes a lot of trouble at Foster’s.

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

Wilt wants to watch basketball on TV, but the others don’t. Then a new Imaginary Friend misbehaves at the house and everyone else gets blamed.

A suspicious imaginary friend shows up at the house, and Frankie is out to prove him a fraud.

The Duchess is adopted by Mac’s neighbors, and the Foster’s don’t want to take her back.

Mac tries to thwart Bloo’s plans for a party.

Bloo gets a nasty case of the hiccups and must get rid of them before the big Imaginary Friend Pageant.

A camping trip becomes a problem when Bloo eats all the food.

Mac gets the gang to join a bowling team, but ends up getting booted off.

Eduardo runs away from the Home to prove his bravery, but ends up over his head in a fight.