Bloo becomes tired of always losing to Mac at everything, so one day at the Prize Hive, he challenges Mac to a thirty-mile race back to Foster’s.

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, […]

Richie Wildebrat, a kid at Mac’s school, keeps bragging about his imaginary friend, Blake Superior and how they will win the imaginary friend talent show pageant. Mac wants to beat him so it can end Richie’s bragging, so he asks Bloo to enter the pageant, but Bloo does not want to. Bloo gets the hiccups, […]

Coco escapes from Foster’s, and a chain of events has her on adventures all over the world.

An imaginary pen resembling Abraham Lincoln is confiscated by Mac’s teacher after she catches him helping his creator cheat on a history test. Mac hatches a plan to rescue the friend – along with his au pair Moose – from the classroom closet, but the imaginary Honest Abe does not quite live up to his […]

During the production of the home’s newspaper, Uncle Pockets, the most frequently adopted imaginary friend to come to Foster’s, returns yet again. Uncle Pockets’ charm drives all the other friends’ attentions to him, making Bloo jealous. Bloo then decides to try to expose Uncle Pockets as a fraud through the home’s newspaper.

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 […]

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 […]

A rich benefactor is considering giving money to a charity, and visits Foster’s to see if it is worthy. Mr. Herriman gets Mac and Bloo to keep Coco out of the way, but in the end, it is only when the benefactor mistakes Coco as Mr. Herriman’s wife that he considers Foster’s, and invites them […]

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.

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

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 […]

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.

Everyone in Fosters is sick of Herriman’s rules, so Frankie decides that she should run for president. Bloo also decides to run when it is stated that any resident of the house can be a candidate. After Bloo resigns, he helps Herriman by giving the house embarrassing and even untrue facts about Frankie. Frankie eventually […]

In the series finale, Mr. Herriman explains that Mac is moving, Bloo decides to give him the best day ever, though things do not go as he planned. Through the entire day, Mac does things with everyone but Bloo, making him angrier and more emotionally hurt after every disappointment. He also gets more pressured every […]

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 […]

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 […]

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.

All Wilt wants to do is watch a basketball game on TV, but the house’s ridiculous requests and Wilt’s inability to refuse them keep him from seeing the big game.

Bloo and Mac enjoy playing with each other in the mud, but when it is raining, they get sick. As Mac is taken home by Frankie, Bloo misses out on the scary movie the friends planned to watch that night. When Wilt, Eduardo, and Coco begin to believe that the ghost in the movie is […]

Bloo is sad about Eduardo getting adopted and holds auditions to get an alternate one; meanwhile, the residents get letters from those that were adopted in another Adopt-a-Thought Saturday.

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.

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 […]

When the whole house goes to a fair, Mac and Bloo compete to see who will throw up last on a ride called the Vomit Comet. Bloo ditches Mac to ride in Madame Foster’s Firebird, but a “quick” stop at the fabric store across the street from the fair suddenly turns into a nightmare for […]