The day of Madame Foster’s birthday comes around and Frankie has forgotten to buy streamers, so Mr. Herriman orders her to go get some. Mac, Bloo, Eduardo, Wilt, and Coco tag along, but wander off while in the mall and get into various scrapes, slowing Frankie down.

Eduardo runs away from the home to prove that he is not a coward. Meanwhile, Terrence is looking for an imaginary friend to compete in the Extreme-O-Saur Battle, and he comes across Eduardo. While Mac, Bloo, Wilt, and Coco search for Eduardo, Terrence uses him to fight against huge imaginary friends at the junkyard.

It is Adopt-A-Thought Saturday, an event that focuses on getting good friends adopted on the weekends when children are out of school. Mac and Bloo find out what Adopt-A-Thought Saturday is about after their good friend Jokey gets adopted. Not wanting to lose any more friends, they spend the day forcing everyone back into the […]

After appearing on local television news trying to outperform Eduardo, Bloo becomes a celebrity, doing commercials, television shows, movies and personal appearances. As time goes by, he discovers fame is not all it is cracked up to be.

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 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.

Mac seeks the aid of Jackie Khones to find out who stole his library card and used it to check out a now overdue book.

Bloo finds out about a door in the home that everyone is forbidden to open. He asks around about the door, but no one will tell him what is behind it. Finally Bloo snaps and opens the door, releasing hundreds of imaginary friends called scribbles, small friends created by babies. The scribbles are natural hard-workers […]

Bloo is convinced that Cheese is a spy working for an evil extraterrestrial organization to steal the brains of everyone on earth after seeing a sci-fi movie and reading a tabloid newspaper where it’s pictures is similar to him. Later on, Frankie and everyone else (including Bloo) is stuck in an out of control day […]

In the series premiere movie, Mac sends Bloo to live at Foster’s Home for Imaginary Friends after being told by his mother that he is too old to have an imaginary friend. There, they meet Mr. Herriman, Frankie, Wilt, Coco, and Eduardo, who all announce that eventually, Bloo will be adopted by another kid. Mac […]

On Adopt-A-Thought Saturday, Madam Foster renews a feud with her cranky old neighbor Old Man Rivers with disastrous consequences. Meanwhile, Bloo tries to settle a score of his own with Rivers’ irritating grandson, Young Man Rivers.

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.

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 […]

When rain forces them to cancel their trip to a water park called Monsoon Lagoon, the gang decide to have their own fun, by making videos and uploading them to ViewTube (a parody of YouTube), while Bloo is constantly sulking because of their canceled trip.

Foster’s is being put on the local news and Frankie wants everything perfect, but the only thing standing in her way is Cheese who keeps showing up at Foster’s uninvited. In an attempt to keep him out, Mr. Herriman installs a security system. Unfortunately, due to misreading the instructions, everyone gets locked out of the […]

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 […]

A little dare between Mac and Bloo turns into a huge daring competition between the house members once Madame Foster gets involved.

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.

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.

Mac takes Bloo to school for show-and-tell, and his classmates love Bloo so much that they imagine their own Bloo knock-offs. Hundreds of Bloos come to Foster’s the next day and Bloo dubs them his minions, but when Mac shows up to take Bloo to see the Ice Charades, he cannot figure out which Bloo […]

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 is jealous of Wilt getting special attention for the number of abandoned imaginary friends he brings to Foster’s, so he tries to rescue imaginary friends just like Wilt does. When Bloo finds a man in a cell-phone suit and thinks he is a friend, he takes him to Foster’s, thinking everyone will give him […]

In the series premiere movie, Mac sends Bloo to live at Foster’s Home for Imaginary Friends after being told by his mother that he is too old to have an imaginary friend. There, they meet Mr. Herriman, Frankie, Wilt, Coco, and Eduardo, who all announce that eventually, Bloo will be adopted by another kid. Mac […]

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 […]