"Who Let the Dogs In?". When Eduardo finds a puppy in the house, he must keep it a secret due to Mr. Herriman's strict rule of "No Dogs in the House." But when this one puppy becomes several puppies, the secret becomes almost impossible to keep.
"Berry Scary" Berry is the new Imaginary Friend in the house. And she has set her sights on Bloo. Now anything that keeps her away from Bloo must be removed - even if it's his best friend, Mac.
"Seeing Red". Terrence realizes that the only way to get Mac is to create an Imaginary Friend to beat up Bloo. So Terrence creates…Red. / "Phone Home". Bloo tries to "rescue" an Imaginary Friend, but it's really just a guy trapped in a cell phone costume.
"Adoptcalypse Now". Adopt-a-thought Saturday is a great day when Imaginary Friends try to get adopted by new families. But to Mac and Bloo, it is a dark day when their good friends are taken away from them. Determined to save their friends, Mac and Bloo turn to some drastic measures.
"Blooooo". After watching a scary movie on a dark and stormy night, Wilt and Eduardo are sure there is a ghost in the house. Little do they know that it's actually just Bloo who is now ghostly white and snot-ridden with a cold.
When Mac tries to stop Bloo’s secret party from happening, Bloo tempts Mac with his one weakness — sugar.
Mac drafts the Gang onto Madame Foster’s bowling team to help her beat her arch-rival Flo. But when Mac gets booted off his own team, he must learn the ways of the ball from a bowling guru.
“Where’s There’s a Wilt There’s a Way” All Wilt wants to do is watch his favorite basketball team on TV, but the House's ridiculous requests and Wilt's ridiculous inability to refuse them threaten to keep him from the big game. “Everyone Knows It’s Bendy” A new Imaginary Friend begins misbehaving all around the house and everyone else is taking the blame. That is, until Bloo comes up with his master plan.
"Sight for Sore Eyes" When a Seeing Eye Friend loses his blind kid, it's up to the Gang to find him before harm comes to his boy. "Bloo's Brothers" When Mac takes Bloo to school for Show & Tell, all the kids decide to create their own versions of Bloo. Soon, Foster’s Home in inundated with hundreds of Bloo clones, and Mac has to figure out who the real Bloo is!
When Foster's needs a new roof, Bloo bakes up a plan to sell Madame Foster's amazing cookies.
Mac and Bloo develop crushes on Frankie and compete for her love. But when Frankie suddenly starts professing her affection for an unnamed suitor, Mac and Bloo become jealous and try to thwart every guy she comes in contact with.
Keith Ferguson
Blooregard
Sean Marquette
Mac
Grey Griffin
Frankie/Duchess
Tommy Kenny
Eduardo
Phil LaMarr
Wilt