The sixth season was confirmed on June 22, 2016 on Ben Bocquelet's Twitter. Unlike the first five seasons will have 44 episodes. The premiere date of this season was January 5, 2018.
Back in time to when Anais is a newborn baby, Gumball and Darwin are terrified of her sinister and evil nature of trying to get the boys in trouble and killed. They decide to ship her away, but her box ends up getting picked up by the garbage disposal, forcing the boys to go and rescue her.
Gumball and Darwin become suspicious of Richard's connection to a woman named Samantha who is always hanging out with a group of old ladies. When they realize that Richard and Samantha are one and the same, they set out to right a wrong.
Darwin ends up in detention with Julius Oppenheimer Jr. for trying to fix Julius' vandalism, and Julius cons Darwin into being part of his gang... but soon regrets it when everything Darwin does goes wrong.
Gumball and Darwin decide to spend the day by simply vegging out on the couch and watch TV. They attempt to ignore all the bizarre events happening around them, but are eventually forced to act when Nicole, Richard and Anais are left hanging in their car over a broken bridge.
Gumball is put off by Tobias' constant burns, despite the fact that he allows Darwin to do so and that he himself is self-deprecating. Realizing that Tobias wants to be his "best" friend, Gumball tries to let him down easily, but this convinces him to instead "wipe out the competition".
The kids try to help Richard bond with Frankie.
Gumball and Hot Dog Guy discover why they're so awkward with each other.
The kids convince Mr. Corneille to become a cage fighter and set up a fight against a fearsome Russian fighter.
Alan has lost faith in humanity and turned the world black and white. Gumball must get over his hatred of Alan to bring the color back by singing.
A group of kids get locked in the school after their parents have a charity gala. They appoint Gumball as leader to get them out but it leads to chaos.
When Clayton shapeshifts into people to take their detentions for money, he starts framing them for misdemeanors so Gumball and Darwin must track him down to stop him.
When Principal Brown has to take the bus, he and Gumball relate their grievances about their respective girlfriends (Miss Simian's bad morning breath and Penny's irritable laugh). They make a deal to tell each other's girlfriends about their issues, but Principal Brown backs out on his end, causing Gumball to pester him.
Gumball and Darwin try to find out the name of their neighbor, Antlers Guy, but accidentally blow his witness protection cover.
Sarah finds a notebook from the Awesome Store which magically makes what she draws happens. Unfortunately, she draws bizarre love stories throughout Elmore.
The Wattersons have to stop doing stupid things in order to prevent Anais from falling into a coma from facepalming too much.
After accidentally bumping into each other in the grocery aisle, Nicole and her parents have it out. The Wattersons discover why Nicole and her parents haven’t been on speaking terms for so long. The kids decide to bring about a reunion, in order to secure the backlog of birthday and holiday presents...
Richard creates chaos in the Chanax building when he is mistaken for the long lost CEO. Nicole and a disgruntled employee must save everyone from Richard's dangerous ideas.
Larry warns Gumball and Darwin that if they don't take their education seriously they’ll end up like him. To prove his point, Larry lets Gumball and Darwin work some of his many roles to make them appreciate the value of a good education!
Gumball and Darwin argue with the Internet and make him mad. So mad in fact that he seeks to wipe out humanity and, while doing so, malfunctions! The whole of Elmore is plunged into a time before technology. It's actually pretty nice. Will Gumball and Darwin decide to leave the internet unplugged?
Hector is unhappy with his height, so the kids try to use Mrs. Jötunheim's potions to shrink him, but it goes terribly wrong.
A sketch show about what "The Amazing World of Gumball" would be like if one replaced Gumball with someone else.
Penny's family argues about being in or out of their shells. Gumball unwillingly tells vague stories to help them settle their dispute.
There's a new kid at school but nobody can understand a thing he is saying. Gumball and Darwin try different ways to figure out what's going on.
The Wattersons turn their home into a BnB in an attempt to raise some extra cash.
It's Halloween in Elmore. As the kids go trick or treating we see what everyone in town is up to. The ghosts and ghouls are finding it increasingly difficult to scare children, and are only scaring part-time. Can Gumball and Darwin help them get their scare back?
Gumball decides to put Mr. Small's eco-friendly principles to the test but it doesn't quite go as planned. Mr. Small disappears after deciding to leave the modern world behind. But on the plus side they discover that the Great Stink-Ape of Elmore Woods is definitely not extinct.
Gumball tries to convince Leslie he's an expert on all things plant-related. However, when Leslie realizes Gumball hasn't got a clue what he's talking about, he decides to call his bluff. An escalation of dangerous dares and stunts ensue as they try to out-plant each other.
Richard doesn't answer the door in time and the jobsworth delivery guy will not let him have his package. His options are to pick his package up at the depot or pay for a redelivery. Richard doesn't like the sound of either option, so a battle of wills begins that can only end in the destruction of one or both of them.
Everyone assumes Darwin and Carrie's relationship is doomed as they're so different. That is, everyone except Darwin and Carrie. When Carrie's cool ghostly ex-boyfriend turns up, Gumball decides to get Darwin to confront what's really going on.
Anais and school psycho Jamie are accused of the same techno-crime. They are forced to team up to discover the real culprit in order to prove their innocence. After solving the case, they realize that they have more in common than they thought.
Richard Watterson seems supernaturally attached to his old refrigerator.
The Wattersons play a fantasy role-playing board game to resolve their differences.
Have Gumball and Darwin finally run out of things to say to each other?
Banana Joe's Mom can predict the future, but she can't predict her own disappearance.
Gumball and Darwin believe they've turned Miss Simian into a neck-cushion.
Gumball and Darwin save the day at the Rainbow Factory.
On a top secret school assignment Gumball acts like a certain suave British secret agent.
Gumball and Darwin give Nicole a crash course in computers.
Gumball and Darwin baby-sit, then baby-lose, Penny’s little sister.
Mr. Robinson tries and repeatedly fails to win back Gumball and Darwin’s friendship.
Darwin feels bad for the household objects in Elmore and encourages them to rise up.
Darwin has finally had enough of Gumball’s advice and seeks a new mentor.
When Gumball’s old BFF turns up, Darwin gets jealous.