History YMMV / Carl

** In the very first episode of ''Carl'', Miss Bishop introduces herself and states that she will be the homeroom teacher for the rest of the students' school lifes. This becomes rather funny given that three seasons later, she was PutOnABus after [=FreezeFlame22=] both lost interest in the character and was unnable to find a voice actress that could do a posh british accent at the time, with Carl even [[LampshadeHanging lampshading]] how they will never see her again.

** In "Looking Back" taking place 30 years ago, Principal Buckingham, Mr. Moore, and Mr. Morris encounter Calvin and his friends. As Morris tells Warren (Calvin's ex-best friend)to watch his mouth, he tells the others that he may be their teacher but they'll be seeing his name on the lights, 10 years from now which Calvin teasefully responds with "and I'll be a cop!" As they're in detention, Morris tells Bruce Evans that he is a disgrace to society and he's not going to amount anything in his life. 30 years later, Calvin does become a cop, Bruce does clean up his act after high school as he officially becomes the CEO of Pokey Papers and poor Mr. Morris is still the teacher of Toad Town High, much to his misery.

** Liam [[FreudianExcuse is the way he is]] because [[ParentalNeglect his parents have neglected him his entire life]], sometimes even forgetting that he exists, and all because he doesn't get the stellar results Roxanne gets in school no matter how hard he tries, therefore not giving his parents a reason to brag about him to other people. It's heavily speculated that he ended up in Gooper's GangOfBullies because it was the only place where he actually felt accepted for who he was.

** What little personality Emily had consisted of her being a judgemental {{Jerkass}} who badmouths people when they're out of earshot, but then there's her insulting and physically assaulting Kylie, the only one who was actually willing to stand for her, when Kylie confesses to having kissed Tucker at the Christmas party, not because of the cheating itself, but because Kylie, a bisexual woman, kissed a man while having a girlfriend. Emily hurt Kylie both physically and emotionally over a mistake she made.

** Liam became this after decking Gooper in the face in "Bad Roxanne (1/2)" once he learns that he was blackmailing Roxanne into dating him, even warning him to never try it again. He might be a jerk, [[PetTheDog but he still cares for his sister deep down]].

* HollywoodHomely: Mary-Lynn and her sisters are said to be rather ugly by the other students in ''Carl'', but the only real negative (physical) trait they have are their big foreheads. According to WordOfGod, Mary-Lynn and her sisters are not meant to be ugly, but rather average-looking, and the comments about them being ugly are just "teens being teens", as otherwise no teenage boy would even consider making out with the Hatchin sisters.

* JerksAreWorseThanVillains: Gooper is a horrendous bully who sees women as objects, Tyson is a power-thirsty psychopath who doesn't care who gets hurt as long as he is able to achieve his goal, Candy psychologically abused DK and almost made him lose his friends and job... [[LoveToHate but the way they are presented makes it difficult for the audience to entirely hate them]]. [[HateSink Hate Sinks]] without further characterization, such as Dominik Bones (who verbally abuses Dry Bones on a daily basis and is the reason why he developed an inferiority complex), and Emily (A FlatCharacter that what little personality she has consists of being a massive asshole) are much more hated by the fanbase.

* MemeticBadass: Roberto. Is not rare for fans to label him as one of the most god-like characters in the franchise.