WMG / Kaeloo

Smileyland is a small purgatory for individuals with a rough childhood.

There are themes in the show about Hell and eternity, and Kaeloo seems awful hell-bent on keeping everyone there with her. The episode Goodbye, Mr. Cat's themes of growing up may actually just be symbolism manifested into "reality", with the "acne" merely being that Mr. Cat has made up for his lost childhood and was ready to move onto a higher plane of existence.

As for how the characters got there...

• Mr. Cat never ran away from home - he was beaten to death by his brothers. His transformations into random objects when beaten signify his perceived loss of personhood when bullied by his brothers.

• Stumpy jumped from a tall building to commit suicide after his 36 sisters were murdered. His fear of heights and penchant for necromancy probably stem from the way he died and his desire to bring his sisters back from the dead. His denial of even having sisters may be his way of coping with the loss.

• Quack-Quack died on the operating table as the scientists of the lab in which he was raised were trying to "upgrade" him. His current incarnation is what he imagines he would have been if the upgrades were successful.

• Pretty died of an allergic reaction to some cosmetic product. Having died with a swollen and ugly face, she wants to look beautiful forever.

• Eugly committed suicide after her sister, due to being bullied and having to cope with the loss of her sister. This explains her emotional vulnerability and acceptance of her sister's cruel treatment of her.

• Olaf died of starvation or cold after being kicked out by the other penguins.

• Kaeloo is a succubus taking on the form of a frog. Her transformations into Bad Kaeloo, and her penchant for role playing are hints at her trickster nature, which she uses to try and lure the boys away from crossing over so that they may keep her company.
• Jossed in Episode 92, which shows that they are very much alive. Also, in Episode 123, an episode about the afterlife, Smileyland isn't mentioned to be a place where dead people go.

It's the norm in Smileyland for plants to be sentient and animate, whilst animals are largely immobile and act as forces of nature.

Kaeloo and her friends are exceptions as they did not originally come from Smileyland.

Teenagers have no place in Smileyland, but can return once they are adults.

This may explain why Kaeloo isn't a tadpole and Mr. Cat sounds like puberty hit him like a truck.

Teens and adults are perfectly acceptable in Smileyland, it's just that Kaeloo is a huge troll.

Smileyland is a simulated habitat in a laboratory.

Possibly the one Quack-Quack was created in.

• This would explain why the bushes are made of cardboard, the trees are made of metal and the Sun is powered by a lightbulb.

The clones created in Let's Play Hide N' Hunt and Let's Play Detectives are still running around Smileyland.

Smileyland is a pound for superpowered animals awaiting adoption.

Smileyland is Earth, only in the future.

It's centuries into the future. All humans are dead and most inanimate objects have been mutated to become sentient. There are four animals that live in each country/vicinity/town, as all surviving animals (and there weren't many who did) act a little like humans and speak English/French.

As for television, it's either reruns from when humans were still alive, or some animals from some countries/vicinities/towns make TV shows to broadcast to their fellow animals.

The buddies were put on Smileyland to repopulate the local area with their mutant spawn.

Smileyland is a program in a Lotus-Eater Machine designed to torture troubled youths.

The buddies are in fact a group of difficult human youngsters chosen as the first test subjects to enter "Smileyland" and deal with each other. They are a complete idiot, a spoiled brat, an ugly but nice girl, a cruel and domineering young boy, a bullied boy-genius, a delinquent vagrant and a girl with a Jekyll & Hyde complex.

The buddies are all human pre-teens, and Smileyland is their dollhouse.

They have little animal version dolls of themselves and act out game scenes that they can't play in real life due to either prop unavailability or it's physically impossible to do so (such as fight zombies and the like). Kaeloo has two dolls of herself and alternates between dolls when she is unhappy with the way the game is going, or if Mr Cat is upsetting her. Objects used in certain situations are props from the room where the Smileyland Dollhouse is kept, such as the Gruel being a yellow or gold crayon they found, and the reoccurring car being a toy car Mr Cat brings over from his place. When it's a situation where Mr Cat shows up while the others are already playing, it's him walking on them with their dolls and Kaeloo pressuring him to get his doll out and join them.

Smileyland is in the Continuum.

Everyone there is a Q, which explains the Reality Warping that goes on there.

Kaeloo is fond of Quack-Quack because they were both lab animals.

Kaeloo is a White-Lipped Green Tree Frog.

Compare these◊ photographs◊ to her character◊ design◊. All we need to see is her climbing a smooth surface. Which she seems to be capable of, so she's very likely some kind of tree frog.

• Episode 121 confirms that Kaeloo is a tree frog.

For a week every month Kaeloo either gets mode locked into her Bad Kaeloo form, or the transformations just become significantly more frequent than they usually are.

Just because.

Kaeloo grew up in badly polluted water and this happened.

The now-female frog was traumatised by this experience and plunges herself into childish games of pretend to escape the harsh reality that puberty pulled a bait-and-switch and left her with an ambiguous voice, anger management issues and a set of female genitalia she wasn't born with.

• Alternatively, endocrine disruptors were taken to deliberately induce a sex change, making her the equivalent of a post-operative Transgender woman who, due to Bizarre Amphibian Biology, in fact does have a working female reproductive system. She may have received confirmation that the change was complete somewhere between the events of Prince Charming and Peace Man, likely by becoming gravid for the first time, which could explain why she suddenly wanted to kiss Mr. Cat when she'd been rejecting him previously - she no longer had a Bridget to drop.

Alternatively, Kaeloo is a Hermaphrodite.

Word of God has confirmed this.

Kaeloo may just be one of those frogs that changes sex depending on mate availability.

She's female because it's a sausage fest there and she's not going to be getting any from the plants.

• It's possible that during the events of Let's Play Hide N' Hunt, one of her clones had turned male due to the presence of the original and the other clone.
• Can we say Let's Play Canon-Ball◊? It's been confirmed!
• It's also hinted at in several other episodes.

Kaeloo can control her gender.

• This would explain a lot of things, such as for example her refusing to kiss Mr. Cat while dressed as a male character in "Let's Play Prince Charming" despite having shown attraction to him at other times - she was male at the time.

Kaeloo just plain doesn't know what sex she is, but her friends do.

They've given up trying to convince her.

Kaeloo is a young adult who cannot let go of her childhood.

It was implied in Let's Play Doctors And Nurses that she is post-pubescent, and in Let's Play Baby-Sitting that both she and Mr. Cat are able to reproduce. There's also the blindingly obvious fact she isn't a tadpole, and also seems to have a rather womanly figure.

• There's the possibility she simply doesn't know how old she is and assumes she's a child. She has been proven to be disgustingly unobservant.
• Her age keeps changing from episode to episode due to Negative Continuity.

One day, Kaeloo will become Mrs. Cat.

And she'll confuse the heck out of everyone who doesn't know her.

And their kid? Will look like THIS

• Nightmare Fuel
• Oh, yes. And if it transforms like its mother... Oh, Crap!.
• What's worse is that Kaeloo is a frog. Consider the amounts of eggs that are typically contained in frogspawn.

Her name is pronounced "KAY-loo", but she pronounces it "KAI-loo" because she thinks it sounds sexier.

She also thinks she's a hot piece of ass, when clearly, she isn't.

She leaves her diary open on her bedside table.

And it's so saucy it's a wonder it doesn't slip right off the table.

Her transformations are excruciatingly painful, they just happen very quickly.

Whenever cute little Kaeloo transforms into her big, bad alter-ego, her flesh tears and her bones break to allow for the rapid growth. When this happens in reverse, the process is too horrifying for words.

Kaeloo is not a frog, but a toad.

She finds it hideously embarrassing and goes so far as to even deny belonging to groups which aren't even mutually exclusive to being a frog just to place emphasis on being a frog.

The true guardian of Smileyland is a Puppeteer Parasite or some other Body Snatcher who takes on a new host every few years.

Kaeloo is its current host body. When the entity takes on a new host, the other inhabitants of Smileyland are quickly taken out of the picture somehow, and a new set of "buddies" lured over. Of these companions, a new host is eventually selected and so the cycle repeats itself.

Kaeloo's transformations into Bad Kaeloo are merely the conflict of the parasite-host interaction manifesting itself as a change in physical form to try to keep the entity in control without destroying the body completely and this mechanism works regardless of who the parasite/entity is possessing at the time. During these outbursts, traces of the host's own personality come through to the surface.

It is possible that prior to possession, Kaeloo may have been a brutal predator of questionable sentience that just happened to look cute.

Kaeloo had children in the past and lost them somehow.

The way she treats her friends makes it seem as if she's got a serious maternity complex.

• It's possible she ate her tadpoles, given the kind of animal she happens to be and how impulsive she is at times. That might have been the reason she was so adamant in Let's Play House not to let Mr. Cat leave her alone with the "children".

Kaeloo suffers from Histrionic Personality Disorder.

Her provocative behaviour, constant need to be the centre of attention and fleeting, overdramatic displays of emotion certainly point to this.

Rather than the above theory, she's a Narcissist.

Kaeloo tries to project an image of being the ultimate Purity Sue, when behind closed doors, she uses a multitude of Dirty Social Tricks to worm her way into the hearts of those she sees as a good source of narcissistic supply.

She is particularly fond of Quack-Quack, who she sees as her "Golden Child" - an angelic being who can do no wrong, and also an extension of herself. Conversely, she treats Stumpy with relative indifference unless there's some narcissistic supply in stock for her and she sees Mr. Cat as little more than a threat to her hold on the others.

She's power-hungry, and will grasp at any opportunity to be in charge no matter who gets hurt in the process. In fact, it's better for her that someone does get hurt - she could nurture them back to health and look like the wonderful little bundle of sweetness she pretends to be.

When her self-esteem, position of power, whim or her Golden Child is threatened, she goes into a narcissistic rage so extreme it transforms her physically. She hates this because this form reveals her true nature - a monster.

Her constant playfulness is genuine, however, but if anyone dares to question her rules or call her out on breaking them, she'll hit them with the brunt of her narcissistic rage, whether it be a Bad Kaeloo transformation or being just plain passive-aggressive as she does sometimes.

Kaeloo is actually an enchanted princess.

Smileyland was once a blossoming kingdom until the Sugar Apocalypse happened, after which Kaeloo's subjects became flowers, trees, rocks and forest monsters and the ruler turned into a little green frog. The only way to break the spell is to be kissed by another princess.

Kaeloo actually reads the Terms and Conditions when she signs up for things.

And she reads them out loud with a magnifying glass.

Due to the events of Let's Play Grown-Ups, Kaeloo will get help and prevent the eventual Split-Personality Takeover Bad Kaeloo has planned for her.

...And it'll end up being for the worst, as she'll grow up to be a Depraved Kids' Show Host.

• Supported in Season 2, with her seeing a psychologist to control her anger.

Kaeloo's behaviour is all her Father's fault.

Her mother died before she could remember and she was an only child. Her father had desperately wanted a boy and resented Kaeloo because she was female. He brought her up reprimanding her for being the sex she is, which led her to be ashamed of who she is, but at the same time, building up a grenade of rage towards him inside of her. Kaeloo's father would make her act like a boy as long as there wasn't anything to define what sex she was. So she put on a voice that would be suitable for either gender.But when she first started to develop (either period or other, you decide), her father was horrified and kicked her out. But she literally exploded with fury, that being her first "Bad Kaeloo" transformation. Then she ran away, convincing herself it was "alright" as long as she kept smiling.She met her friends at a later time, when she still wasn't completely developed. But as she went along, Mr Cat's hormones got the better of him, causing her to realise, "Holy crap, I really am a girl." This terrified her, knowing that her father really hated her because of this. And Mr Cat wasn't helping her situation.

Kaeloo's forms are of opposite sexes.

Mr. Cat doesn't seem to know this.

Coupled with the above theory, Bad Kaeloo is actually the true form.

Little Kaeloo is his equivalent of a Sexy Jutsu, and this form is held for long periods of time because she's more visually appealing and likeable. This is supported in Let's Play Spies.

Bad Kaeloo has already performed a Split-Personality Takeover, but can still take the physical form of little frog Kaeloo.

Kaeloo's manly voice may be due to the show's use of the Voices Are Mental trope, and Bad Kaeloo is attempting to affect little Kaeloo's original voice, which may or may not have actually sounded like a girl. Her bordering-on-provocative behavior and tendency to be a huge drama queen may be overcompensation on Bad Kaeloo's part to throw everyone off the scent that Hyde Plays Jekyll, if the theory that the two forms are of the opposite sex is to be believed.

In Let's Play Spies, Bad Kaeloo, after having been shot with the truth serum, admits that s/he transforms into little Kaeloo because "Everybody likes little Kaeloo". This, along with the "Bad Kaeloo ugly, not handsome" line hints at both the theory that the forms are of opposite sexes and that there is really nothing left of the jolly little she-frog but her pretty little physical form.

Kaeloo may have been molested or even raped as a child.

Now that it's written down, let's pretend nobody ever thought this for even a moment.

Kaeloo's species is protogynous.

Hence why the image drawn on the growing chamber in Let's Play Grown-Ups depicted a man rather than a woman. It also takes into account the mentioning of divorce - Kaeloo might be intending to divorce her partner before the upcoming sex change.

• Alternatively, the species might be protandrous, and s/he hasn't realised this nor the fact that s/he's already hit the change.

Kaeloo is the only inhabitant of Smileyland who doesn't have some form of invulnerability.

Notice that she isn't on the receiving end of nearly as much violence as her friends, although she is the one dishing out a lot of it. When she does get smacked around, her injuries are never as severe as the ones suffered by the others, who have Involuntary Shapeshifting, detached limbs, stabs, bullets, incineration and even decapitation on their record. Either she's just plain luckier than the others or she's actually unable to survive the same things they could.

Kaeloo isn't fat, she's gravid.

Or at least that's her excuse.

• Jossed in Episode 80, which proves that she really is fat.

Kaeloo grew up in extreme poverty and was likely homeless for a lot of her life.

It's kind of apparent in her disdain for wasting food, and how bad she is at handling money. She may have been rendered homeless by habitat destruction, which might be why she gets her knickers in a twist over pollution and destruction of nature.

Kaeloo's middle name is Priscilla.

She hates it.

The lisp is a species-wide thing.

It's because of her Overly-Long Tongue, which all frogs have.

Kaeloo's bossiness stems from an inferiority complex.

It's already been established that she sucks at almost everything she does, likely isn't able to survive having limbs hacked off as her friends do, is prone to emotional breakdowns and is an amphibian in a group of mammals and birds. It's really no wonder she gets defensive and attempts to exert her dominance every chance she gets.

Kaeloo is secretly a chain smoker.

And it's not just tobacco.

Kaeloo was in a coma throughout most of her development.

As a limbless tadpole, she had an accident involving several carp and a swan's foot. As in real life, her growth and development did not stop and so she metamorphosed from tadpole to froglet, then to a frog whilst still in a vegetative state. When she finally awakened, she believed she was still a young child and nobody had the heart to tell her otherwise.

This may give her line about "waking up one morning with legs" in Doctors and Nurses a darker meaning than intended.

Kaeloo is asexual.

Come on, you were all thinking it. She's probably got the same deal as Jacquimo in that she's a hopeless romantic, yet would rather not be getting any herself.

• Jossed in numerous episodes. She seems to be bisexual, since people she has fallen for include Mr. Cat, Eugly and a male Chippendale dancer.

Kaeloo has more than two split personalities.

Between her usual hamminess and rare periods of Dissonant Serenity, as well as the fact that her voice seems to raise or drop an octave depending on the episode, it's not difficult to imagine that Kaeloo and Bad Kaeloo aren't the only ones sharing head space.

Bad Kaeloo does have her own name.

Much like how Henry Jekyll and Edward Hyde have their own names, Kaeloo and Bad Kaeloo do as well. Bad Kaeloo probably just uses her other form's name for convenience. Bonus points if her name is something "pretty", like Rana or Lily. It might even be Priscilla.

Her mother looks a lot like Bad Kaeloo, whereas her father vaguely resembles a smaller version of her usual self.

Because that would be hilarious. Especially if her mother is considered highly attractive among frogs.

In-universe, Kaeloo really, really sucks at cross-dressing.

This is evident in some of the things her friends say/do when she's donning a moustache, such as Mr. Cat referring to her as "Little Lady" in Circuses, trying to kiss her in Prince Charming, and referring to her as "ma'am" instead of "sir" in Episode 107. The reasons she sucks so bad at it? She has a feminine physique and doesn't bother putting a dark patch under her chin to give the illusion of having a vocal sac.

• This is more bothersome as she probably actually does turn male to cross-dress.

Bad Kaeloo's poison glands have been put to use on several occasions.

In Trap-Trap, when Quack-Quack dug a spoon into the back of her head, he was pretty much doing the equivalent of Toad Licking and proceeded to hallucinate a pile of yoghurts. The reason such a high dose didn't kill him was... well, he's Quack-Quack.

Residual venom on the spoon might have affected Kaeloo once she turned back into her frog self, hence why she became unintelligible. On other occasions, already-secreted venom may have affected her in a mild way, such as causing the Laser-Guided Amnesia she sometimes suffers from after a transformation.

In-universe, Kaeloo is considered very attractive to both sexes.

And she milks it for all it's worth. Just look at how she bats her non-eyelashes at everyone.

• Inverted in Episode 54.

Kaeloo and Mr. Cat used to date.

They broke up over the discovery that she was a Hermaphrodite. She still isn't over him. Obviously, they never got to "that" stage of the relationship.

• Jossed in Episode 54; he has no idea whether she's a boy or a girl.

Stumpy suffers from amnesia.

His official bio states that he has 36 sisters, though in-show, he claims not to have any.

Stumpy's sisters are dead.

He just doesn't like talking about them and denies their existence because they died in particularly gruesome ways.

Stumpy is a ground squirrel.

While it does remove some of the irony of his fear of heights, there's no missing his cheek pouches.

Stumpy will grow up to be an actor, and his big break will be in a Mister Coolskin film.

Assuming the Let's Play Grown Ups depictions of the characters will be rendered inaccurate due to later life choices.

Stumpy will become an artist.

"Let's Play Art Class" shows that he's an amazing artist.

Stumpy is capable of body snatching.

In Let's Play Art Class, he blew his own head off with a bazooka, and was brought back with a stone head crafted by Quack-Quack. This hints he might have the ability to possess and animate objects and possibly individuals.

Stumpy has two mothers.

It'd be a nice touch.

• Jossed. He has a mom and a dad. His parents never married, though.

Stumpy's girlfriend, Ursula, is a bear.

He does seem to have a thing for taller girls.

• Jossed. She's a cat, though she does appear to be taller than the rest of the cast.

Ursula doesn't exist.

Stumpy made her up to look better in front of his friends. Alternatively, she could just be someone posing as a bear-girl on Fakebook.

• This is supported by his shock after Pretty says Ursula doesn't exist in Episode 83.
• Jossed! Ursula is real. She appears in Episode 116, though offscreen.

Stumpy thinks it's hilarious to constantly talk about his "nuts".

Given how immature he is.

Mr. Cat's first name is Lucifer.

His brothers called him "Lucy" as a joke.

• Supported in Let's Play Streetball.
• Jossed. His first name is Hector.

Mr. Cat is Compensating for Something.

Seriously, look at that bazooka he's always carrying around. If his strutting about like some kind of deranged rooster didn't set off a few red flags, that would.

• Possibly jossed at the end of "Let's Play at Reading Books".

Mr. Cat is actually the same age as Stumpy.

He just hit puberty really early.

• Jossed. Episode 122 shows that Mr. Cat and Kaeloo are definitely older than Stumpy and Quack Quack.

Expanding on the above theory, Mr. Cat has a sort of premature aging condition, much like Jack.

It's known that he was beaten by his brothers, but we don't know how long his "childhood" actually lasted. It may well have been a few weeks, and when he ran away from home in the expository comic, he appeared to be an adult cat complete with something resembling facial hair.

Mr. Cat is a Beta Test Baddie to Quack-Quack.

It's been shown in some episodes that he's able to survive having his limbs removed, and it's been mentioned that he has many "inventions" lying about. He's also an amazing athlete and a genius. Add to that his minor shapeshifting capabilities and Quack-Quack's ability to do the same and it's easy to see that he has similar abilities to Quack-Quack, only to a far lesser extent than the latter.

Mr. Cat is jealous of Quack-Quack's superior abilities and so seeks to destroy him - only he cannot, as the duck is indestructible.

Mr Cat and Quack-Quack are working together to screw with Kaeloo.

For years this has been going on, ever since the four met. Mr Cat, a demolitions expert of sorts, and Quack-Quack, a young academic, see Kaeloo as the monster doing battle with herself that she is. They want to see how damaged she is, so they team up and make up a story for her to "play along" with. Quack-Quack pretends to be bullied, orphaned and unable to speak, and Mr Cat pretends to be a brute, hurting Quack-Quack for the sake of it. But in reality, they both know this immensely pisses her off, and every time she transforms, they make notes of her Bad Kaeloo behavior.Over time, Mr Cat saw Kaeloo's dislike for him being "forward" towards her, and he takes this and runs with it, explaining why he's always chasing after her. When Quack-Quack gave this a try, it had a different outcome.

Working together, Mr Cat and Quack-Quack are running mental tests, making some notes, etc, all to break her down mentally. Once their job is done, they may even try to cure her of her Split Personality Disorder.

Mr. Cat's family are a Family.

His mother is the matriarch of the Cat Mafia, and rules with an iron claw. He and his older brothers were often left unattended while mama was off on "business", and so they got into a lot of trouble at home.

Mr. Cat's cruelty being directed mostly towards Quack-Quack is due to Fantastic Racism.

Quack-Quack is a duck, which is a bird. While Mr. Cat is still a terrible jerk to Stumpy, he does treat him marginally better than he treats Quack-Quack and Kaeloo due to being a mammal. Kaeloo may have been spared from Mr. Cat's worse behaviours purely because Mr. Cat finds her slightly attractive despite being an amphibian.

• He has blatantly stated that he hates ducks before...
• The "mammal" part was jossed in Episode 61, which showed that he hates Pretty, who is a mammal, even more than Quack Quack. Though that might be because she obsessively stalks him, invades his privacy and bullies his friends.

Mr Cat's first name is Nyan.

That's right. Mr Cat IS Nyan Cat.

Years after he has given up being happy. He has given up crapping rainbows and he has forgotten how to breathe in space, but some of his hovering abilities have stayed, explaining a few things. He has more or less "grown up", hating what he used to be. The "ran away from home" story is partially true. His brothers were Tac Nayn and others, and beat him up for being happy and playful. So he ran away, took away his first name and became cold and serious. Giving up having fun is part if the reason why he doesn't really like playing with the others that often.

• This would explain how he could easily imitate Nyan Cat in Episode 115.
• Jossed. His name is confirmed to be Hector in Episode 240.

Mr. Cat drugged the pond water with a serum combining endocrine disruptors and some sort of Applied Phlebotinum which transforms the taker into a hulking monster periodically.

When the friends first met, Mr. Cat fell for Kaeloo at first sight, and upon finding out what species of frog she is, decided to throw together a serum which would prevent her from ever turning male as long as she was under its effect, with the side effect of turning her into a monstrous toad whenever she's angry. He uses the transformations as a marker to ensure she's still being affected by the drugs, and hence is constantly trying to trigger them. The drug also had the unintended side effect of reducing her intelligence and messed with her immune system.

While Mr. Cat's initial motivation for doing this to her was loneliness, it's since evolved into a predatory, sick desire to psychologically break and have her as a possession. He plans to, by slowly chipping away at her psyche, turn her into his personal love toy, with the Bad Kaeloo form to serve as a bodyguard.

• Jossed; he does actually care for her and dislikes seeing her sad. Also, he has no idea whether she's a boy or a girl.

Mr. Cat likes lasagna.

Part of the reason Mr. Cat hates Pretty so much is the way she treats her sister.

Given the way he was treated at home, it's not too hard to imagine that he doesn't like seeing other people getting abused by their siblings.

Mr. Cat used to be nice to Kaeloo, Stumpy and Quack Quack.

• There must be a reason they still see him as a friend despite all the horrible things he's done to them; they're probably waiting for him to become nice again and get over the "mean" phase.

Quack-Quack has been Gaslighting Mr. Cat.

Quack-Quack is a flesh golem.

The duckling never survived the tests done on him in the lab, so instead they stitched his corpse up and reanimated it into what we now know as Quack-Quack.

Quack-Quack is planning on "upgrading" his friends into Do Anything Cyborgs like himself.

It's not too much of a stretch to assume that on top of everything else, he's got complete immortality and knows his friends will eventually kick the bucket. In an act of good will, he'll turn each of them into a stitched-up cyborg like himself.

He has already started the process with Mr. Cat and Stumpy, but is having trouble figuring out how to make it work with Kaeloo due to her drastic transformations.

• Jossed. In Episode 123, Kaeloo reveals that one day, Quack Quack will definitely die someday.

Quack-Quack's mechanical components run on yoghurt.

I think this has pretty much been established.

Quack-Quack is deaf.

He's just really good at lip reading. In Catch the Mailman, he didn't notice the letter behind him because to him, there was no proof that it had even been put there. When Stumpy screamed at him demanding if he was "deaf or what", that was when he checked, for fear that he had been found out. He really can talk, he only told Kaeloo that he couldn't so he wouldn't be made to, because he can't hear and doesn't know whether he sounds like he's a retard or not. He says "Quack" all the time because that's the only thing he's able to pronounce properly.

• This would explain why he kept ignoring Olaf's instructions in Episode 53; Olaf's Russian accent might have caused him to pronounce words differently, so Quack Quack couldn't lip read.

Pretty is Ursula.

She created a fake online profile so she could do stuff without anyone knowing it was her, so she could maintain her social image. She pretends to have a crush on Mr. Cat instead of Stumpy, since he's an ugly loser and being seen with him would cause her reputation to take a hit.

• Supported in Episode 83, where she tells Stumpy to his face that Ursula does not exist.
• And again in Episode 105: Stumpy decides to create a world where there is Ursula, and given his hatred of Pretty, why would she be there in his version of the world?
• Jossed. Ursula is another girl who the cast have never met before.

The "salmon" story from "Let's Play Baby-Sitting" was a lie Mr. Cat made up to get Kaeloo to stop talking.

He did put a lot of emphasis on her inability to talk being one of her "greatest qualities".

• Confirmed as of season 5.

Kaeloo was still angry at Mr. Cat during "Let's Play Courtroom Drama" because the of the events of "Let's Play Goodbye, Mr. Cat!", the previous episode.

She was unusually mean to him in this episode. She was probably just letting off steam for what he did to her in the previous episode.

Mr. Cat's alcoholism is because he wants to drown his sorrows.

Stumpy's sister is his own split personality.

• In Episode 71, he even states that he himself is his own sister, and he wears a wig and talks to himself.

Mr. Cat poisoned Pretty's food in Episode 64 on purpose.

Given the fact that he's a psychopath who won't think twice before killing someone and utterly despises the rabbit, it's possible the food poisoning was no accident.

The episodes take place in different universes.

• This theory would explain how come everyone can die and be fine in the next episode, and also why Smileyland keeps turning from a planet to a country on Earth to a country on a different planet. Episodes like "Let's Play Golf" and Episode 57 take place in the same universe, so the characters in that universe can recall the events of those episodes.

Mr. Cat hurts Quack Quack because he thinks Kaeloo likes Quack Quack better than him.

• He has mentioned quite a few times that he does it to get Kaeloo's attention, though he has given other reasons as well.

Mr. Cat picks on Quack Quack because Quack Quack is indestructible.

In some episodes, Mr. Cat comes across as a guy who, while sadistic, psychotic and jerkish, isn't actually ''that'' bad and he actually loves his friends, but he still wants someone who he can play out his sadistic fantasies on without actually hurting anyone. He usually doesn't try to physically harm Stumpy and Kaeloo because they can be killed. He even aknowledged in one episode that he can't actually kill Quack Quack.

Theory about the whole "Smileyland is a kids-only land... sometimes" thing.

Rules about who is accepted in Smileyland are kind of confusing, considering that Kaeloo thought that Mr. Cat would have to leave after entering puberty because Smileyland is only for children... even through Kaeloo herself is a frog instead of tadpole and one episode implied that she is post-pubescent.But maybe the rules for who is accepted in Smileyland are a bit more flexible than we think. That said, the conditions for it are:

• A) Be an actual child. That means you need to be less than 13. In this case, it doesn't matter how intelligent and mature you are, as long as you are not a teenager or an adult, you are good to go. But once you start to mature both physically and mentally, you will have to leave.
• B) Be a child at heart. You can be as old as you want to be, as long as you have personality traits of a child - that is to say, idealism, playfulness, imagination, cheerfulness and things like that.

So in other words, Kaeloo may be an adult, but because she is such a happy-go-lucky, idealistic and playful person, she passes for a child extremely well and is allowed in Smileyland thanks to that. On the flipside, Mr. Cat might be less than 13 but he sure as hell doesn't act like a child, which is why Kaeloo thought that he would have to leave after reaching puberty.

When Stumpy re-wrote the programming of Smileyland in Episode 105, he removed the "kids only" rule.

• He seemed considerably upset about losing Mr. Cat in Episode 34, and he does love his friends. It's likely that he would have taken measures to prevent them from losing each other in the future.

Pretty is mean to Kaeloo because Mr. Cat likes her.

• Most of Smileyland's inhabitants seem to have figured out the Unresolved Sexual Tension between Kaeloo and Mr. Cat, and it's likely that Pretty has too. It's also clear that Kaeloo tries to keep Pretty as far away from Mr. Cat as she can, so Pretty may possibly resent her for keeping her away from him.

Everyone in Smileyland is protected by some sort of Improbable Infant Survival.

Because seriously, leaving a bunch of underage children alone and allowing them to hold weapons and do drugs really wouldn't end well in real life. This means that residents of Smileyland can't die and will come back to life no matter how many times you do something that would kill them in real life. However, it's not quite clear if the characters know about it.

Mr. Cat Took a Level in Kindness in Season 3 as a result of him erasing his bad thoughts in Episode 105

Obviously, he didn't suddenly become a Nice Guy or anything, that's obvious, but Mr. Cat seems to be a bit nicer in Season 3 than in the first two seasons - in Episode 109 he tries to help Kaeloo out with her Hulking Out problem and in Episode 133, he comforts her. Well, in Episode 105, he tried to erase his negative throughts in order to save Smileyland. While the bad thoughts did return to him, maybe not all of them did...

Pretty's smartphone is made of rubber.

In Episode 82, when she throws it on the ground and stamps on it, it sort of compresses and returns to normal instead of breaking.

Mr. Cat's first name is Tom.

Because why the heck not?

• Jossed. His name is confirmed to be Hector in Episode 240.

Quack Quack's name isn't actually "Quack Quack".

When he tries to tell people his real name, it comes out as "Quack Quack" because of his being a Speech-Impaired Animal.

• Jossed. Kaeloo found him as an egg and decided to name him Quack-Quack.

The entire show is a game.

Specifically, it's played out by bunch of human children with animal plushies.

• The kid who uses Kaeloo in playtimes is a boy, which is why Kaeloo is voiced by a man. He often gets angry when his playtimes don't go according to plan, but tries to stay calm (just like Kaeloo herself). When his friends anger him enough, he claims that Kaeloo has transformed into a giant monster and beats their characters up.
  • And when he's absent, he gets replaced by a girl (ideally his twin sister). And that would explain Kaeloo's Ambiguous Gender. Plus, when someone asked her on Facebook if she was a boy or a girl, she said that "maybe [she is] kind of adaptable".
• The kid who uses Stumpy is a giant comic book and video game fan, which often rubs off on Stumpy. Reason why the character is named Stumpy is because the plushie used to have it's hands ripped off until someone (maybe his mom or grandma) sewed them back on. He loves making fun of himself, which is why Stumpy is so dumb. Also, the kid has actual Tourettes and his hands tend to shake a bit when he is playing, which is represented by Stumpy's neck spasms - he usually holds Stumpy by the neck.
• The kid behind Quack Quack is kind of shy and quiet, but he is pretty good at imitating animal sounds. Just like Stumpy, the Quack Quack plushie used to be ripped apart a bit, which explains the stitches. The kid is also an orphan who never knew his parents, which rubs off on Quack Quack.
• Mr. Cat is an example of Mean Character, Nice Actor - the kid who uses Mr. Cat may not be that bad, he just likes playing the bad guy because Evil Is Cool. He is probably the oldest member of this little club. Just like Mr. Cat, the kid who uses him comes from a rough household, which is why "Mr. Cat" knows a bit more than what a child should know (or maybe it's just that he really is older and should know bit more about stuff like guns, sex and alcohol than his friends), which explains all the adult jokes coming from him. Also, while the kid isn't evil, he does have bit of a twisted sense of humor and weird ideas about "fun". In "Let's Play Goodbye Mr. Cat", he was actually entering puberty and others were afraid that they couldn't be friends with him anymore, so they just went with the idea that he got some weird disease that makes you develop acne.
• As for Pretty, Eugly and Olaf, they became friends with the main four later on. Just like Mr. Cat, Pretty and Olaf are an example of Mean Character, Nice Actor. Meanwhile, Eugly is actually Pretty's twin... brother in real life. Just like Quack Quack, he is pretty shy and quiet.
• This may be why the show has Minimalist Cast - the kids only own a frog, squirrel, duck, cat, two bunnies and a penguin and the other toys they have cannot be used as characters, so if they need another character, they just have to pretend that that character is "off screen".
• As for the dirty jokes coming from characters other than Mr. Cat, well, kids know a bit more than we give them credit for - they know about drugs, they probably heard some swear words somewhere, through they usually don't realize the complete meaning behind everything.
• This could explain why the cars in the show are made out of cardboard...

Mr. Cat has PTSD.

Mr. Cat is the protagonist of Duck Hunt.

Think about it - the objective of that game is to shoot ducks.

Mister Cat's first name is Mister.

• Jossed. It's Hector.

Quack Quack's constant yogurt eating is a coping mechanism.

He has an absolutely horrific backstory.

Stumpy has the same fingerless gloves as Mr. Cat because he idolizes him.

Stumpy has stated several times that he thinks Mr. Cat is cool and wants to be just like him. It's possible he got the gloves to imitate Mr. Cat.

Stumpy has a crush on Mr. Cat.

Or at the very least, he feels a mild attraction towards him. After all, Stumpy does show signs of being a bisexual at times. Maybe that's why he idolizes him and wants to be just like him - he wants him to like him back. Also, in Episode 71, he, for some reason, came up with the image of Mr. Cat in a panther G-string thong...

Smileyland is a "safe haven" of sorts for kids with psychological issues.

Smileyland is Invisible to Adults.

One or both of Mr. Cat's parents is in prison.

• Jossed with Lola Felicia, though we don't know what happened to Al.

Mr. Cat comes from a German-speaking family, or at least a bilingual household where one of the languages was German.

He can speak fluent German and says "Gesundheit" instead of "Bless you".

Alternatively, Mr. Cat is Italian.

He does a pretty good Italian accent and claims to have worked in a circus in Rome, Italy at some point in time prior to the events of the show.

Ursula is the cat girl from the dirty magazine in "Let's Play at Reading Books".

Episode 116 revealed that Ursula is apparently really attractive. Episode 136 revealed that she has blonde hair and large breasts. And finally, Episode 134 revealed that she is a cat. Sound familiar?

The salmon who raised Mr. Cat was eaten by a duck.

This provides an explanation for a lot of things on the show: Mr. Cat's hatred of ducks, his line in the season one finale implying that one or possibly more people who were close to him died prior to the series, and why he almost cries when talking about her and only uses past tense to refer to her.

• Jossed. The fifth season reveals that the whole salmon story was a lie.

Stumpy wants to be like Mr. Cat because he has a crush on Pretty.

Well, Pretty has a huge crush on Mr. Cat and Stumpy, despite being in relationship with Ursula is shown flirting with Pretty several times and in one episode, he is happy that she kissed him.

The bunny twins are actually identical twins, not fraternal twins.

Pretty's eating disorder, diet and exercise routines just made her thinner than her sister, but stunted her growth so she's shorter as well. Kaeloo does mention once that they look similar.

One of the traumatic events in Mr. Cat's past involved dance routines.

His reactions to people performing dance routines include "Oh, no, not the dance!" and "HAVE MERCY!"

Cats are generally seen as an attractive species in Smileyland

Mr. Cat seems to be really attracted to the cat girl in the dirty magazine, Ursula is stated to be a cat and Stumpy, Mr. Cat and Kaeloo find her attractive and even Mr. Cat himself is apparently really handsome in-universe.

Stumpy is polyamorous

And Ursula is aware of that and okay with it, which means that if he develops a crush on another girl, he isn't actually cheating on her.

Mr. Cat has some sort of muscle-growth Fetish

He likes seeing the girl he has a crush on transform into a muscular toad, so it might be a possibility.

Ursula is a teenager.

She's taller than the rest of the cast, who are kids and preteens, and she doesn't seem to live in the same place as they do, so it's even possible she lives outside Smileyland.

Stumpy has a foot fetish.

He likes toe nail polish, shoes in general, and the smell of smelly shoes, and even once states that he "loves feet".

The bunny twins' parents showed a lot of Parental Favoritism.

You just have to look at the names they gave them to tell.

Mr. Cat's crush on Kaeloo is a part of his Oedipus Complex.

Kaeloo is the Team Mom of the main 4 and she has the tendency to yell at Mr. Cat, just like his real mother, and punish him whenever he does something wrong. And Mr. Cat has a massive crush on her. Seems oddly suspicious...

Quack Quack and Mr. Cat both graduated from school early.

Given their intelligence, it's fairly possible.

Stumpy is a closeted transgirl.

He secretly loves dressing up as a girl and in one of the comics, he even wished to be turned into a beautiful girl.

Alternatively, Stumpy is genderfluid.

Just before Mr. Cat arrived, Smileyland was hit by some sort of epidemic that turned people into morons.

As a result, Kaeloo, Stumpy and Quack Quack are dumber than Mr. Cat and the secondary characters, who showed up after the epidemic.

The name "Mr. Cat" is just an alias.

Mr. Cat is the son of a gangster. He probably wouldn't be going around telling people his real name. He also has fake ID to prove it, explaining how he obtains tobacco and alcohol.

Stumpy writes Kaelat fanfiction.

He ships Kaeloo and Mr. Cat really hard, so it wouldn't be a stretch to imagine that he writes fanfiction about them becoming a couple.

Mr. Cat has self-harming tendencies.

That may be why he wears gloves - to cover whatever scars he may have caused to himself - and also why he wants Bad Kaeloo to hurt him. Considering that he suffers from who knows how many severe mental issues, it wouldn't surprise me.

In the series finale, Kaeloo and Mr. Cat will have The Big Damn Kiss.

Kaeloo is unaware of her crush on Mr. Cat.

It's buried deep within her subconscious, which is why Bad Kaeloo, who according to Jean-Guillaume is an expression of Kaeloo's subconscious, has wanted to kiss and cuddle Mr. Cat while regular Kaeloo normally objects to it.

Smileyland has a deadly disease which is Only Fatal to Adults.

As soon as people mature, they must leave before they contract it and die.

After the events of "Let's Play Scaredy Cat", Stumpy was never un-zombified.

In Episode 53, there are worms inside his head, one of which crawls through his nose.

Mr. Cat was the first friend Kaeloo ever made.

Stumpy actually has at least average intelligence but the writers keep turning him into the stupid one.

Note: When I say "writers" I mean the writers as they are potrayed in the show, not the real life writers of Kaeloo. (Even if they are technically the same people)As revealed in Episode 105, the people who work on the show actually exist within the context of it and the characters can interact with them. And in several episodes, Stumpy tends to complain about how the episodes are written. Maybe he is actually fairly intelligent and is angry at the writers for making him so stupid in most episodes.

Kaeloo and Mr. Cat are both insecure love interests.

That's why they hide their crushes on each other in most episodes - Mr. Cat suffers from Inferiority Superiority Complex anyway and probably thinks that Kaeloo, someone so kind and friendly wouldn't like a Jerkass like him, especially since she tends to mistake his rare, but still genuine acts of kindness and expressions of love for simple jokes. As for why Kaeloo feels insecure, it's a more stereotypical reason - Mr. Cat is seen as cool by other characters and seems fairly popular among his peers, not to mention that he is apparently good-looking enough that a rich, famous and beautiful girl like Pretty has a crush on him too. Why should he care about someone so "lame and annoying" as Kaeloo if he can have someone like Pretty?

Mr. Cat works for a news agency.

He always reads the newspapers so that people who see him reading the news will become interested in it, as an advertising technique. He also knows how to run a TV news channel successfully and is knowledgeable about the content which viewers like to see.

Kaeloo created Smileyland.

Mr. Cat has a Stalker Shrine of Kaeloo.

He has multiple photographs of her, including one that she said was supposed to be "private", so it's not hard to imagine.

Mr. Cat's claws are black because he paints them black.

Cats' claws are usually white, and Mr. Cat has been shown to like certain aspects of goth culture, which would include black nailpolish.

Lola Felicia walked out on her family.

Mr. Cat merely states that he misses her, and never specifies if she is dead; given how unhappy she seemed to be with her family life, it's quite possible that she decided to leave.

Mr. Cat is Really 700 Years Old.

Mr. Cat really hates the French Cour des Miracles, which was around in the 17th century, for some reason. This theory could also explain why he calls Leonardo da Vinci "my buddy Leonardo"; given that Mr. Cat lived in Italy for a while prior to the show, he might have actually known him. Perhaps all those conflicting backstories he has are all canon, since he had been alive for a really long time.

Kaeloo and Mr. Cat are secretly dating.

He keeps flirting with her in public because he wants their relationship to go public, and she doesn't want anyone else to know.

Quack Quack's heart is in his stomach due to his Bizarre Cyborg Biology.

In "Let's Play Doctors and Nurses", Kaeloo tries using a stethoscope on his stomach instead of his chest.

Kaeloo has some form of separation anxiety with Mr. Cat.

She desires his constant attention, gave up on the idea of giving him the Silent Treatment in mere seconds, gets jealous of any other girl who even comes near him (including a girl in a magazine picture), and texts him whenever he's not physically present in the same place as her.

Mr. Cat has an anxiety disorder.

• One of his personified thoughts in Episode 105 just walks around saying "I'm doomed" over and over again with an expression of terror on his face.

Lola Felicia is an Education Mama.

This would explain Mr. Cat's unusual level of knowledge of science, math, and literature for someone his age, and his competitive nature.