A Rock And Roll Band called Pizza Party formed by some Imaginary Friends annoy Bloo by not allowing him to be their lead singer, so he decides to form his own band with Wilt, Eduardo, and Coco called Taco Fiesta. Soon, they are challenged to a “Battle of the Bands”.

Terrence has an idea to make up a square friend named Red to beat Bloo up with so he can bully Mac to his heart’s content, but the friend he creates is friendly instead of being mean and violent.

Bloo is tired of Madam Foster getting all the glory for rescuing abandoned friends, so he sets up his own foster home – Bloo’s Foster’s Home for Imagainary Friends – in a cardboard box on the sidewalk.

Eduardo tells some little white lies to the nursery residents of Foster’s, and now has to cover his tracks so they cannot catch up to him.

Foster’s is finally able to get rid of Duchess when she is adopted. However, the family that adopted her turns out to be Mac’s neighbors and her complaining gets to be too much for Mac’s mother to handle. Terrence tells Mac that she is thinking about moving to Singapore (which Terrence thinks is in Wisconsin). […]

Mac drafts the gang onto Madame Foster’s bowling team to help her beat her arch-rival Jerkins, but when Mac gets booted off his own team, he must learn the ways of the ball from an imaginary bowling guru.

When various imaginary Santa Clauses are brought to Foster’s, Mac begins to lose his faith in Santa’s existence, so it is up to Bloo and the others to help restore Mac’s faith in the old St. Nick. Bloo sends Wilt on a sleigh ride around the world and tries to get Eduardo to slide down […]

In this Emmy Award-winning movie, Frankie is tired of working without being thanked. One day, a toy box is discovered at Foster’s front door. Frankie is ordered to take it to the attic and leave it alone, but she knows there is an imaginary friend trapped inside, and opens the box to find it. When […]

Bloo wakes up to find the house completely deserted. With no Herriman or Frankie there to enforce the house rules, Mac and Bloo set out to cram as much fun and mischief into one day as they possibly can.

Mr. Herriman’s carrot addiction leads him to blame Coco for stealing the carrots that were to be used for dinner that night, though it was him who hid them around the house. With no carrots left, the only thing left for dinner is to make “It,” a dish that Frankie has never been able to […]

Bloo has a reputation for being a funny imaginary friend, though his jokes sometimes offend people. When Bloo cracks a joke about an imaginary friend’s height, the “New Guy” challenges him to meet him outside at 4:00.

This episode tells the story of “The Big Cheese” through the eyes of a one-inch tall imaginary friend named Peas, detailing how he helped Frankie turn a negative into a positive.

Loading the player... In this double-length special, it is time for the Five Year Creator Reunion Picnic, where imaginary friends’ creators come to Foster’s to see their former friends. One friend’s creator, however, is missing: Wilt’s. Wilt, believing that his creator is still mad at him for a past let-down, sets off on a cross-country […]

When a thunderstorm knocks out the power at Foster’s, the gang organizes a game of pretend. Goo – who pretends to be an international pop star – gets upset when the boys do not want to play with her, so she make-believes a gang of villains that will force them to listen to her imaginary […]

Frankie is upset that she has to do paperwork when she wants to go out with her friends on Friday night, so Mac tells her he will file the paperwork for her. Overjoyed by this, Frankie calls him “the best” and kisses him on the cheek. After that, Mac develops a huge crush on Frankie, […]

Mac and Bloo ask Mr. Herriman to go camping. He refuses to let them go, but Madame Foster thinks it is a great idea. After they arrive, Bloo has eaten all the food. Mr. Herriman then sets off into the woods in search for more food, and then meets wild bunnies. Meanwhile, back at camp, […]

Bloo overhears Mac talking about his supposed wedding. Dismayed, Bloo finds help from a depressed imaginary friend, not wanting to lose Mac forever. Bloo observes some adults and mimics them to try to grow up for Mac.

Frankie and Madame Foster are leaving for the day, so Mr. Herriman is placed in charge of the house. However, Madame Foster inadvertently gives Bloo the idea to throw a wild party, and he plans to do so without Mr. Herriman’s consent. While they manage to come up with a method to distract Mr. Herriman, […]

Mac suspects that Bloo, along with the rest of the house, are planning him a surprise party. Mac, however, wants no part of it, since Bloo’s surprise parties always humiliate him in some way, and he is determined to foil Bloo’s plans by any means necessary.

Bloo, Frankie, and Madame Foster are tangled up in a chaotic series of events when Frankie wins tickets to the premiere of a new action movie starring Rod Tango.

After Eduardo finds a puppy when he was taking out the trash, he decides to keep it, despite the fact that dogs are not permitted inside the house due to Mr. Herriman suffering from a fear of dogs. However, despite Eduardo’s best efforts, the dog gets loose and starts causing problems that Eduardo takes the […]

When Ivan, a seeing eye friend, loses his blind kid, the friends try to find the boy before harm comes to him.

Bloo and the gang arrive at Mac’s apartment for a slumber party that Mac did not plan. Mac tries desperately to keep his friends quiet before they wake up his mom and brother with their shenanigans.

In this double-length special, it is time for the Five Year Creator Reunion Picnic, where imaginary friends’ creators come to Foster’s to see their former friends. One friend’s creator, however, is missing: Wilt’s. Wilt, believing that his creator is still mad at him for a past let-down, sets off on a cross-country journey to set […]

Mr. Herriman is not happy about Bloo not perfectly following the rules of the house. When he threatens to kick Bloo out, Bloo gets so stressed out that he accidentally breaks a bust of Madame Foster. Bloo tries to find a way to fix the broken bust before Mr. Herriman finds out.

Bloo entertains Mac with an action-packed story about a crystal “potato” of power. A little boy (Eduardo), an alien (Coco), a hermit (Wilt), a magical fairy (Frankie), and the Superdude (Bloo) attempt to protect the crystal potato from the evil Lord Snooty (Herriman), who is taking away all the fun in the land ruled by […]

Bloo notices after a trip to the grocery store that Frankie has left the keys in the bus and decides to take Mac for a joyride in the Foster’s bus. Wilt, Coco, and Goo promise to keep it a secret, much to Wilt’s disconcern.

Goofball John McGee comes to Foster’s and makes a total nuisance of himself. Frankie thinks he is a teenage kid passing himself off as an imaginary friend, who always needs help with homework and washing his jerseys, and eats all the food that Frankie buys from the store, but everyone else believes otherwise, leaving Frankie […]

When Foster’s needs a new roof, Bloo bakes up a plan to sell Madame Foster’s amazing cookies after his first attempt at selling lemonade in the middle of winter fails. When they finally get enough money to buy a new roof, Bloo sets himself up as the town’s cookie mogul.

Mac makes a home movie about Foster’s Home for his school project, but Bloo edits it into a humorous film with flatulent sound effects. This leads him to be entered in the state student film festival. With Bloo’s help, they make “T-Rexatron Alienwolf III, A Prequel in Time: The Unrelenting” but Edwardo tapes over Bloo’s […]

Bloo tries the old peanut brittle can filled with snakes trick, thinking it as the ultimate Halloween prank after strapping Mac to his bed, thus not allowing him to go trick-or-treating because of his regular sugar rushes. However, when Mr. Herriman tries it, Bloo thinks it has gone awry, and Herriman becomes a zombie, with […]

Mac wins a sweepstakes and receives tickets to Europe, but when the gang tries to pack at the last second, everyone has delays that make them later and later. Frankie is making sure that Madame Foster can take care of the house while everyone is gone, though all she wants to do is break the […]