The Grim Adventures of Billy and Mandy Wiki


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Mandy iTunes Clip HD
Alias Mandy, Lord Mandy
Classification Human
An Immortality giant worm (In the Future)
Brain eating meteor (She cannot transform but has the ability when a meteor sucks her brain)
Gender Female
Residence Endsville
Relatives Claire (Mother)
Phil (Father)
Nergal Jr. (boyfriend)
Pets Saliva (Permanent Pet)
Cerberus (Temporary Pet)
Affiliation Underfist
Occupation A Student at Endsville Elementary
Ruler of the world (In the Future as a giant worm)
The Supreme leader of the Kids Next Door (Temporarily)
A Napkin Collector (Only in the episode Dream Mutt)
Real world information
Appears in Grim & Evil
The Grim Adventures of Billy & Mandy
Underfist: Halloween Bash
The Grim Adventures of the Kids Next Door
First appearance “Billy and Mandy in Trepantation of the Skull and You” (Pilot)

Meet the Reaper” (Official)

Voice actor Grey DeLisle
File:Quote1.png Hey! You know Mandy never smiles! File:Quote2.png
--Billy to Grim

Mandy is perpetually a cynical, merciless girl from Endsville. She is the tritagonist of the show. Sometimes, she serves as a protagonist of the show. In stark contrast to her cheerful, talkative, uniquely stupid “friend” Billy, she is shown to be bitter, quiet, sensible, callous and intelligent.

After the theme song, Mandy is shown in front of a black screen, usually speaking to the viewers in a creepy, sarcastic way. This is similar to the couch gag opening of The Simpsons.


When Mandy was a baby, she was shown to have never smiled; she was even visibly unhappy in her mother’s womb. When she does smile, it throws off the natural order of the universe as seen in one episode, My Fair Mandy. Although, this does not apply in some earlier episodes, because she smiles only to her friends Billy and Grim. But she had to smile in front of everybody in the school auditorium when she sang Over the Rainbow as part of a pageant.

In the episode The Problem with Billy, she first met her best friend Billy when they were really young. Billy had rung her doorbell several times until she was annoyed enough to answer. And Billy stole her feeding bottle, put in his mouth and flushing like a toilet. When she did, he immediately pointed out that she had no nose and shoved an ice cream cone into her face after she had asked him if he was "some kinda idiot?". She punched him, called him a creep, and slammed the door in his face. He simply giggled in response to this, telling "she digs me", thinking that she liked him.

Years later, she and Billy had met Grim on the day of the tenth birthday of Billy’s pet hamster, Mr. Snuggles in the first episode of The Grim Adventures of Billy & Mandy, Meet the Reaper. Grim had appeared to reap the soul of the hamster as it was time for the hamster “to kick the bucket” as Mandy had said earlier in the episode, but neither the hamster nor the duo would give in. So, they made a bet. if Grim beat them in a game of limbo, he could reap the soul of Billy's hamster, but if the kids won, Grim had to be their friend/slave forever (or at least until they decide to set him free) However, Billy and Mandy had won –though not in a completely fair way—and Grim has been stuck with them since. In the episode Sickly Sweet, Mandy turns into a monster with the combination of Hippopotamus, Alligator, Bear and Iguana by "The Mask of Beast" for her cynical attitude with Billy and Grim.


Mandy is cold-hearted, bitter, cynical, merciless and behaves herself with far more superiority than many of the characters on the show. She aspires to dominate the planet with an iron fist and to stay as far away from Irwin as possible. Mandy’s antagonistic behavior has left  her parents in fear and they are often shown avoiding her. Her mother showers her with money despite her fears.

While Billy usually gets the trio into trouble, she is usually the one to get them out of it, along with Grim who--without her force--would not even bother trying to help. According to Billy and Grim, Mandy apparently has a fear of professional figure skaters--but she denies, claiming that she simply "doesn't trust the way they spin is all." Mandy also has an intelligence and strength not to be reckoned with. She has an almost superhuman force as she is able to battle monsters with ease as well as being able to understand complex theories of the world when referring to her intelligence, despite being a child. She also never misses a chance to exploit the stupid, which more or less justifies her attachment to Billy.

Mandy is the main antagonist of the crossover episode The Grim Adventures of the Kids Next Door as she took over the Kids Next Door’s Moonbase.

Mandy's greatest fear, as revealed in Big Boogey Adventure, is becoming an overweight, loving, and caring woman who spends time baking goods and has married Irwin.

Although she rarely smiles, she is shown to cynically smile in times when she wins. When she did try to force a smile in a beauty pageant, it caused a rip in the dimension that forced the cartoon to transition into the powerpuff girls due to the sheer awe of it being extraordinary.

Physical Appearance

Even though Mandy is controlling, manipulative, wrathful, even devilish at times, she seems like your average little girl wearing a pink dress with a yellow flower in the center, black maryjanes, and blonde hair accessorized with a black headband. Although she has thick, dark eyebrows that are almost always furrowed and a frown to match which gives her a scowling expression most of the time. And her hair is curved into a style resembling devil horns. In the show's regular art style, she has dark, black orbs of eyes and no visible nose, but small nostrils. However, on some occasions, she is shown to have blue eyes. Such as in My Peeps, after zapping Billy with his scythe, she and Grim are both seen in anime form revealing Mandy to have blue eyes and a small angular nose. In Underfist Mandy's eyebrows got thinner and her head got wider.


    Mandy (1)

    Mandy's intimidating demeanor combined with her wits allow her to manipulate or intimidate those of weaker resolve.

    Despite her lack of supernatural powers, Mandy primarily relies on using her intelligence and intimidating demeanor to get her way and resolve difficult challenges. She is capable of using her wits and boldness to exploit the mental and emotional weaknesses of certain individuals and then uses her intimidating appearance and personality to weaken their resolve and thus allow her to gain the upper hand over them or even seemingly control their minds due to the emotional scars she may cause them, however this usually does not work on individuals of equal intelligence to her or those who have a strong will.
    •  Being that she is still human, there are still several occasions in which Mandy is outwitted, imprisoned or about to be destroyed, at which point she relies on either her wits to think of a way out or on Grim and Billy to help her out or by manipulating them or someone else nearby. Considering that most of the other characters in the series tend to lack common sense, Mandy is able to figure out simple solutions that others were usually oblivious to.
  • MandyStrengthSkills

    Mandy using her martial arts skills and above average strength on a hoard of spiders.

    Mandy also has superior physical strength and martial arts skills which she can use to best most ordinary humans and even some large monsters, but her most notable ability is her intimidation and manipulation skills.
  • It appears that Mandy's behavior has some sort of relation to the natural order of the universe, as shown in the episode, "My Fair Mandy" where it is shown that if she smiles against her own will, the very fabric of the universe will unravel and warp itself into a completely new reality.
    The Delightful Reaper Mandy fused

    Mandy as the Delightful Reaper.

  • Like a few characters in the series, Mandy usually gains temporary powers via supernatural, technological or magical means, such as via Grim's Scythe, ancient artifacts or some sort of vehicle, weapon or robot. Her most notable power boosts were those she gained through artifacts such as the Chicken Ball and the Left Hand of Horror (in an alternate future in which she became The Lord of Horror), or when she fused with the Brain Eating Meteor and the Delightful Reaper. In an alternate future, she even found a way to make herself immortal by combining her body with worm DNA, after which she proceeded to conquer the planet.
  • When she tries to force a smile, it has the power to rip the dimension she is in demonstrated in the beauty pageant in the episode "My Fair Mandy" making a vortex to transition the cartoon into the Powerpuff Girls' world. This is due the disruption of balance in the world that she does not smile ever.



Her best friend since they were infants, she considers him more of an idiotic henchman to do her every bidding as she never misses the chance to benefit from his astonishingly low IQ of -5. He usually complies and does everything she demands of him, seeming to either not mind or even enjoy it at times. He rarely ever snaps at her for this, the only time he ever did shout at her as a result of her treatment of him was when she had told him "Thank you". The other time was when he grew tired of her controlling behavior when she and her parents are forced to stay at Billy's house while their own home is being fumigated. The one time Billy was physically trying to hurt her with Grim was when Grim didn't get his eyesight zapped right which infuriated Billy making him take the scythe and chased the two around the house to try to cut them, cutting multiple furniture they were hiding behind in the process. Billy may be responsible for making Mandy affair with Irwin in the episode Get Out of My Head!.

Despite her negative, cruel behavior towards him, Mandy has been shown to care for Billy--the feeling is also mutual--her feelings could be completely platonic since she mostly considers him nothing more than a servant. But, Billy is the only person who she allows to have physical contact with her, embracing her on numerous occasions, even kissing her a few times.Mandy has also been known to read Billy bedtime stories in the middle of the night when he couldn't sleep whether it be from eating nineteen boxes of cupcakes or other reasons. He has also suggested wanting to marry her at least three times. She also always helps Billy when he gets into trouble, that is until she becomes too bothered to continue and just stops or leaves the scene.

In Billy & Mandy's Big Boogey Adventure, when Billy is supposedly eaten by a giant sea creature, she becomes in denial of his death saying, "Billy's always fine." but when he's been missing for 6 hours, and Irwin becoming restless, she starts to worry. Looking into the waters from which the Kraken came from and snatched Billy, she appears teary-eyed and thinks of him. Until only moments later, Billy appears out of the water riding the Kraken laughing and screaming "I'm fine!"

When Mandy sees this she gasps in pleasant surprise, but immediately regrets ever being worried, since of course, Billy is always fine.

The Grim Reaper

As Billy and Mandy's best friend for all eternity (or at least until they decide to let him go), Grim loathes the pair. Mandy does not seem to care about his hatred and simply uses him for her own purposes. Despite his hatred, the two can come to an understanding on certain things, such as exploiting Billy's stupidity. Grim, like Billy, is more of a servant to Mandy. Unlike Billy, however, Grim spats back at Mandy. The reaper is shown to regularly fantasize about the duo's ultimate deaths, but, deep down, seems to genuinely care about them, an example being in Fiend is Like Friend Without the "R" when Nergal kidnapped Billy and Mandy for himself and Grim came to their rescue.


Mandy's sworn enemy, Mindy is an obnoxious, self-absorbed, stereotypical popular girl. She and Mandy always seem to be rivaling each other in almost every episode Mindy is actually in. It is revealed that Mindy once wanted to be Mandy's friend, but sore from rejection, she had grown to hate Mandy and sought revenge. Ever since then, the two have been arch rivals. In Wrath of the Spider Queen, Mindy is shown to be able to come to an alliance with Mandy if it means survival as she fights spiders alongside her nemesis.


Repulsed by his pursuits to win her affections, Mandy chooses to be as far away from Irwin as possible. Irwin being a close friend of Billy, however, makes it somewhat difficult as he appears in every other episode. Irwin had first fallen for Mandy while she was possessed by Billy in Get Out of My Head! when Billy [while possessing Mandy] had called him a "cutie" and flirted with him. Mandy's worst nightmare is to be fat, kind, and (worst of all) joined to Irwin in marriage.

In Scythe For Sale, Irwin uses Grim's scythe to cast a spell on Mandy that forced her to fall in love with him. She almost becomes his wife/queen in a forced wedding ceremony, but Billy manages to break the spell over Mandy, restoring her to normal.

When he goes through his power trips, Irwin has tried to make Mandy his queen on at least one or two occasions (Scythe For Sale, Boogey Adventure and King Tooten Pooten), but she always refuses in disgust. However, in the former, she almost becomes his queen through a forced wedding ceremony.


  • Mandy is the only character to officially not have a designated nose, (although Jack does not have a nose after his original head is cut off) though nostrils are present when in close-ups.
  • According to Dream Mutt, Mandy is a “Napkin” collector.
  • In the future of Billy’s wedding with Blandy, Mandy wears glasses and looks just like her teacher, Ms. Butterbean.
  • During the first few seasons of the show, some fans mistakenly thought that Billy and Mandy were brother and sister. This is made fun of in a later episode when Harold, Billy's dad, told Gladys, Billy's mom, that he thought Mandy was their daughter.
    • The show's description on Netflix has accidentally referred to Billy and Mandy as siblings a few times.
  • According to her father, a pack of wolves tried to raise her as one of their own when she was born.
  • Mandy likes playing a Hoss Delgado video game, President Evil that involves killing zombies.
  • Mandy is often interpreted as a "Goth" by fans, although it has never been confirmed and the connection is based purely on the stereotype of Goths being overtly cynical, merciless, ill-tempered and angry.
  • Although it has been stated the Mandy never smiles, earlier episodes depict her grinning mischievously after getting her way.
    • This has lead people to speculate why Mandy managed to through the universe off balance in "My Fair Mandy" when she smiled; many presume that this was because this wasn't a natural smile.
    • Mandy have some couple of Similarities to Gaz from the Nickelodeon Series Invader Zim.


Mandy my Mandy

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