Characters: Foster's Home for Imaginary Friends

Here be the Foster's Home for Imaginary Friends characters and the tropes they embody.

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Humans

    Mac 
Voiced by: Sean Marquette

A creative, smart, and very warm-hearted 8-year old. Bloo is his imaginary friend.
  • Absentee Actor: It is possible that his voice actor (Sean Marquette) was busy with something else during the making of the episode "Pranks for Nothing".
  • Adorably Precocious Child
  • Author Avatar: Creator Craig McCracken based Mac on himself as a child.
  • Adorkable
  • All-Loving Hero
  • Ax-Crazy: Mac's personality goes from a very Nice Guy to completely lunatic if he gets even the smallest amount of sugar.
  • Badass Adorable: He doesn't "fight" often, but when he does...
  • Berserk Button: He does not like having his secrets revealed to the world as shown in World Wide Wabbit.
  • Big Eater: Only when it comes to sugar.
  • Birthday Hater: With a twist; Bloo giving him surprise birthdays on almost any day except the actual day of his birthday (with one exception), he's grown something of a hatred towards them. It's mainly because he's put in embarrassing situations.
  • Break the Cutie: If Bloo is separated from him. Even if Bloo causes his most woobie-ish moments, he becomes an even bigger woobie.
  • Cheerful Child
  • Chivalrous Pervert: The pervert part is implied, the chivalrous part is clear-as-day.
    • Covert Pervert: Also, he was very curious of the "Adults Only" movies Frankie kept in her room. All the same it could be sort of excused, since it doesn't have to prove he's actually perverted; any child would be curious of what the adults are hiding from them.
  • The Conscience
  • The Cutie
  • G-Rated Drug: NEVER give Mac sugar. Seriously.
  • Disappeared Dad: Mac's father is never mentioned. He just has his mom and big brother.
  • Early Installment Weirdness: In season 1 episode "World Wide Wabbit", Mac is seen at one point eating cookies, but it's later revealed in season 2 that should he eat sugar, he becomes a crazy lunatic. Those cookies were maybe sugar-free, but still, makes you wonder...
  • Heroes Want Redheads: His crush on Frankie.
  • Incorruptible Pure Pureness: Best seen in "Affair Weather Friends". He would never act with selfish, greedy motives to sell his jerkass friend.
  • Masculine Girl, Feminine Boy: The Feminine Boy to Frankie's Masculine Girl.
  • Nice Guy
  • Not So Above It All: Loads of times. Many episodes, particularly as the show went on, are built around him doing something more childish with Bloo and not being the voice of reason - or ironically applying his reason and wisdom to something immature.
    • Imaginary friends appear to take up qualities of their creators, and he is the one who made Bloo in the first place. So in a way, it makes sense that he has a more chaotic part to his personality. He once got detention for shooting spitballs in class- a very Bloo-esque behavior- and when left in Foster's alone with Bloo, it's Mac who decides to go wild.
  • Only Sane Man: This trope, however, is wonderfully averted if he eats too much sugar.
  • Out-of-Character Moment/Jerkass Ball: When he gives Goo a mean "The Reason You Suck" Speech, which makes Goo cry. Thankfully, he makes it up with a heart-to-heart talk and apologizing.
    Mac: I don't like you! Not a person in this house likes you either! You're odd, talk in a weird way and really fast for that matter! Mr. Herriman is a rabbit, NOT a badger! Bloo's name isn't Chester, it's Bloo, bannanas don't contain protein you numbskull, nuts do! But you don't need anymore nuts since you're nuts! You're the place where they keep all the nuts! It's contagious! You spread the nuts to everyone in this house! Everybody thinks you're a nuisance and they all want you to just GO HOME!
    • My God, What Have I Done?: while Mac said that because he was so steamed, he looked in the present Goo was about to give him. Turns out she gave him a new backpack to replace the one that was rendered unusable at the start of the episode. Needless to say, Mac realized he shouldn't have snapped and apologized to Goo.
  • Out of Focus: Not in the show, but in the merchandise. Whenever merchandise of the series is released, expect Cheese to take his place (except for one shirt with both him and Cheese on it, and at least he did get a stuffed animal and figuriene of himself)
  • Ping-Pong Naïveté: Rarely, but the show does still remind us that he's eight sometimes. For example, in "Camp Keep A Good Mac Down" he's his usual Wise Beyond Their Years self, basically being the only thing keeping the crumbling camping trip afloat - except for the scene where Eduardo tells him a scary story and he starts freaking out like a kid his age normally would.
  • Precocious Crush: His crush on Frankie.
  • Puppy-Dog Eyes
  • The Protagonist: He's primarily the main character, though he switches between being the protagonist or deuteragonist with Bloo.
  • "The Reason You Suck" Speech: Delivers one to Goo in "Go Goo Go". Doubles as Out-of-Character Moment and results in My God, What Have I Done?
  • Red Oni, Blue Oni: The blue to Bloo's red.
  • Savvy Guy, Energetic Girl: Savvy Guy to Goo's Energetic Girl.
  • Sensitive Guy and Manly Man: The Sensitive Guy to Bloo's Manly Man.
  • She's Not My Girlfriend: Says this regarding Goo.
  • Ship Tease: With Goo. He once held her hand to lead her out of Foster's, and she asked him slyly why he was doing that, which led many residents of Foster's to believe they were going steady, which he denies.
  • Shrinking Violet
  • Squishy Wizard
  • Stepford Smiler: In "Go Goo Go" when he has to tolerate Goo's antics, until he finally snaps.
    • One could say he's Type A all the time, due to his depressive home life. However, it's not confirmed and it's debatable.
  • Sweet Tooth
  • Vitriolic Best Buds: With Bloo. Not in the pilot, but in the rest of the series.
  • Vocal Evolution: His voice gets lower and somewhat scratchy after a while, due to his voice actor hitting puberty. This is very noticeable, especially when on the DVD Commentary for "Store Wars", you can hear him (the DVD came out during season five) talk against his higher voice in season one.
  • Wise Beyond Their Years: Most of the time, though he can act his age and be as childish as the rest of them Depending on the Writer.
  • Your Size May Vary: In some episodes, he's as tall as Bloo, but in others, he's taller. Justified, as he's 8 years old and was probably going through a few growth spurts.

    Francis "Frankie" Foster 
Voiced by: Grey DeLisle

Granddaughter of Madame Foster; caretaker at the mansion.
  • Alliterative Name: Francis Foster. Also applies with her nickname.
  • Almighty Janitor: She has to answer to Mr. Herriman and Madame Foster, but she basically runs the entire house all by herself.
  • Balloon Belly: The end of "Cookie Dough". Apparently Frankie's grandmother's cookies are irresistable enough to turn her into a temporary Big Eater with a side of crazy.
  • Bare Your Midriff
  • Beware the Nice Ones: Frankie is an easygoing person, but you don't want to piss her off. Dylan finds this out after admitting his plans to imprison and enslave Frankie and is abusive to her friends.
  • Butt Monkey: In a few episodes, especially "Imposter's Home", which is a half hour long Humiliation Conga of Dude, Not Funny! moments that culminate in her being the only one to miss a concert she'd been dreaming of for months.
  • Cold Turkeys Are Everywhere: Don't let her know that Madame Foster made cookies.
  • Cool Big Sis: Takes this role wherever Mac is concerned. Also is this to a lot of the friends (especially Bloo, even though they drive each other crazy half the time, they also have fun working together to pull off zany schemes)
  • Deadpan Snarker
  • Dude Magnet: Mac, Bloo, Prince Charming, two geeks, a pizza delivery guy, and many more have fallen in love with her.
  • Fiery Redhead
  • G-Rated Drug: Her grandmother's cookies. Let's just say it's best that she never catches wind of them.
  • Green Eyes: Shown in "Destination Imagination" when she looks into the window of the dollhouse.
  • I Can't Believe It's Not Heroin: Her cookie obsession.
  • Masculine Girl, Feminine Boy: the Masculine Girl to Mac's Feminine Boy.
  • Nice Girl: But then again, even she has limits.
  • Not So Above It All: Shifts between being the voice of reason and being as immature and zany as most of the imaginary friends.
    • In World Wide Wabbit, she laughs along with everyone else and happily works with Bloo to merchandise Mr. Herriman's "Funny Bunny" routine until Mac makes her destroy the copies and explains that her job will be tougher if he finds out, she then panics and has a similar conversation with Bloo.
    • In Frankie My Dear, she handles Dylan's admission of being a faux nice guy who wants to turn Frankie into a slave by giving him a bloody nose and a wedgie, Moment of Awesome, yes, but still atypical for a 22 year old woman.
    • Rather than stop Bloo from mixing dangerous chemicals that nearly blows up the house, she simply makes a bet with him that it would be a bad idea in "Imposter's Home for Um... Make 'Em Up Pals". However immature you may find it, though, calling what happened afterwards Disproportionate Retribution would be the understatement of the millennium.
    • Most obvious when it comes to Madame Foster's cookies, which serve as a G-Rated Drug.
  • Only Sane Employee
  • Only Sane Woman: She plays the "Straight Man" role unless it's Mac's turn.
  • Psychopathic Womanchild: Whenever Madame Foster makes her famous chocolate chip cookies, Frankie will regress into this.
  • Reasonable Authority Figure
  • Redhead In Green
  • Servile Snarker: To Mr. Herriman.
  • She Cleans Up Nicely: Frankie can do hot. Oh yeah.
  • Significant Green-Eyed Redhead: Not shown due to the art style but her drivers license says she has green eyes.
  • Single Woman Seeks Good Man: Proves this when she went on her date with Dylan. She initially liked him because he appeared to be a gentleman, but was immediately disgusted when she found out that he only thought of her as a property.
  • Talking in Your Sleep: Frankie does this not once but twice in "Let Your Hare Down" when she has, err, fantasy dreams about action star Rod Tango.
  • Tomboyish Name: Frances "Frankie" Foster.
  • Tomboyish Ponytail
  • Trademark Favorite Food: Goes absolutely insane for Madame Foster's chocolate chip cookies.
  • Tsundere: Type B. Really, really nice, but frequently has her buttons pushed when she's under pressure, especially when it comes to Mr. Herriman's insufferable nagging.

    Madame Foster 
Voiced by: Candi Milo

Owner of the mansion; very lively for her age.

    Goo Goo Ga Ga 
Voiced by: Grey DeLisle

An extremely talkative girl who has imagined LOTS of friends.

    Terrence 
Voiced by: Tara Strong

Mac's evil 13-year old brother, and one of the antagonists of the series.

    Mac's Mom 
Voiced by: Grey Delisle

Mac's mother, who made him get rid of Bloo in the first place, but is unaware of his daily visits to Foster's. She works all day, and Mac hardly ever gets to see her.
  • Adults Are Useless: Zigzagged. Mac's Mom is usually too busy to see Mac or deal with Terrence's bullying but unlike most cartoon moms, she's not oblivious to the abuse that Mac goes through, and tries to stop it. But to her, the problem is Bloo, and the series kicks off with her forcing Mac to get rid of Bloo. And the rest of series, she is completely unaware of the fact that Mac visits Bloo at Foster's everyday.
    • The latter is more to do with the fact that Mac's afraid of how she'll react than anything else.
  • The Faceless: Her face is never shown.
  • Hartman Hips
  • Invisible Mom: While you get to see her back most of the time and hear her voice, you never actually get to see her face.
  • Male Gaze
  • Parental Neglect: She hardly ever gets to see Mac, because she works all day every day.

Imaginary Friends

    Blooregard "Bloo" Q. Kazoo 
Voiced by: Keith Ferguson

Mac's reckless, hyperactive imaginary friend. Mac's complete opposite; however without him, Mac would do everything Bloo says and does.

    Wilt 
Voiced by: Phil LaMarr

A one-armed imaginary friend desperate to be a nice person and gain acceptance.

    Coco 
Voiced by: Candi Milo

A palm-tree/aeroplane imaginary friend with a language based on her own name.
  • Balloon Belly
  • Bilingual Dialogue
  • Cargo Ship: In-universe; she's shown affection towards a lamp and a mop.
  • Cloud Cuckoolander
  • Dark and Troubled Past: While it's never stated in-universe, Word of God says that Coco was created by a little girl that was stranded on a desert island. This explains Coco's bizarre appearance (body = plane, face = palm tree, lips/beak = deflated raft), her insanity, and her willingness to protect others.
  • Happily Adopted: Her real creator is unknown, but she was found and took in by two guys who appreciated her bizarre nature.
  • Hidden Depths: Despite her weirdness, Coco seems to be the most resourceful and practical member of the clique, often coming up with the right solution in a pickle.
  • The Loonie
  • Murder Is the Best Solution: While we can't really be sure, there have been three instances when her suggestions against a problem involve something that Mac and Frankie said "would get them into jail" or "be illegal", respectively.
  • Out of Focus: Season 5
  • Pokémon Speak
  • Reality Warper: Sometimes. The only reason this case is noteworthy is the fact that she's the only imaginary friend who seems to do this.
  • The Unintelligible

    Eduardo 
Voiced by: Tom Kenny

An imaginary friend resembling a huge, hairy monster with a heart of gold.
  • Adorkable: Super friendly, and incredibly kooky.
  • Berserk Button: Just don't mess with his friends... (or former owner)
    • And while he may act like a crybaby, he does not like being treated like a baby.
  • Beware the Nice Ones: Cowardly and soft though he may be, when pushed, Eduardo makes it very clear that he's one of the strongest characters in the show.
  • Big Ol' Unibrow
  • Cloud Cuckoolander: He definitely has his "LOCOOOOOOOOOOOOO!!!!!!!!!!!" moments.
  • Cuddle Bug: Gives (nearly bone-crushing) hugs to people he's worried about.
  • Face of a Thug: He looks like a savage beast when he's anything but.
  • Gentle Giant: His owner, now a grown police officer, made him to not only have a playmate as well as protector from bullies, but to also have someone who was gentle enough to play with her baby brother.
    • Cowardly Lion: However, having a protector backfired. Instead of teasing her, the bullies started to attack Ed, who was too cowardly to defend himself, despite his looks.note  Ed's a natural cry-baby, and refuses to go into a situation unless someone's beside him or he's in a group, and even then he's not going to be happy.
  • Gratuitous Spanish
  • Never Trust a Trailer: A variation. On the show's slowly-growing character pages on Cartoon Network's site long before the pilot was aired, after the bright and colorful characters (Mac, Bloo, Wilt, and Coco) were trotting happily across the screen, Eduardo was seen running furiously toward the camera. At that moment, it actually seemed like he was the villain of this show! But when his character page on the site finally came around, it makes it clear he's anything but.
  • Papa Wolf. Don't hurt his friends or he'll attack.
  • Super Strength: He is capable of carrying a bus around as if it wasn't even there. Though considering his size...
  • Trademark Favorite Food: Potatoes, to the point that he curiously carries around a potato sack wherever he goes.

    Mr. "Funny Bunny" Herriman 
Voiced by: Tom Kane

Madame Foster's imaginary friend; a Victorian, upper-class rabbit obsessed with maintaining order.
  • Antiquated Linguistics
  • Berserk Button: Mr. Harriman does not like having his secrets revealed to the world as shown in World Wide Wabbit.
  • Blind Without 'Em
  • British Stuffiness
  • Cold Turkeys Are Everywhere: His addiction to carrots.
  • The Finicky One
  • Hero Antagonist
  • High-Class Glass: His monocle.
  • Jerk Ass
    • Jerk with a Heart of Gold: He genuinely loves Madame Foster and children in general. However, he prefers to keep it hidden behind a stuffy no-nonsense exterior, as evidenced in "World Wide Wabbit"
  • Literal-Minded: Enough to get the entire house locked outside of their new security system because he interpreted "enter a random number" on the PIN pad to mean "enter a random number every time".
  • Mean Boss: Poor Frankie.
  • Nice Hat: His top hat.
  • Rhymes on a Dime: His highly entertaining "Sweet Little Girl" routine.
  • They Changed It, Now It Sucks: After finding out that people genuinely enjoyed his Funny Bunny routine, he tries to update it for modern audiences, not understanding that what people found joy in was the charming and sweet (and funny) was the nursery-rhyme like feeling of the original. It's implied that afterwards the reaction was Ruined FOREVER as there are no further mentions from the public of "Funny Bunny" (or perhaps like all viral YouTube videos, it faded after a few months, either way it's implied that the hip hop update never caught on). Although in a later episode, they mention the original (reuploaded to YouTube) has over 12 million views, so perhaps the original Funny Bunny routine still was popular.
  • Well-Intentioned Extremist: Most of his strict rules revolve around not wasting resources (As it's a common plot that Fosters' budget is very tight) and simply trying to keep a semblance of order in a building filled with some rather wacky creations.
    • He has been shown to be a Reasonable Authority Figure at times, notably when Bloo accidentally knocked over a bust of Madame Foster and was terrified that Herriman would throw him out. Herriman instead calmly explained to him that he does not punish innocent mistakes, and that people have been knocking that bust over for years.
  • Why Did It Have To Be Dogs?: Has a fear of dogs in "Who Let The Dogs In?", due him to being based on a prey animal. So great is his fear that he even called out "Frankie" instead of "Ms. Francis".

    Cheese 
Voiced by: Candi Milo

A cheese-based imaginary friend with a childlike disposition; likes chocolate milk and cereal.

    Berry 
Voiced by: Grey DeLisle

A small, cute imaginary friend with a dangerously obsessive crush on Bloo.

    Duchess Diamond Persnickety 
Voiced by: Grey DeLisle

An ugly, snobbish and downright mean aristocratic imaginary friend.

    Jackie Khones 
Voiced by: Phil LaMarr

A small, green, furry imaginary friend with a deep voice, one eye, and a cool personality.

    Imaginary Man and Nemesister 
Voiced by: Daran Norris and Grey DeLisle

A superhero imaginary friend and his arch nemesis, a supervillainess imaginary friend. It turns out that they're actually siblings, created by siblings as a fun outlet for their sibling rivalry.

    World 

An imaginary friend connected to another dimension connected to a toy chest. He's terribly lonely and abducts Frankie to be his friend.