Gumbaldia (location)

Gumbaldia is a Candy City built by Princess Bubblegum's Uncle Gumbald.

Background
800 years before the series, in "Bonnibel Bubblegum", Gumbald along with Lolly and Chicle were created by a lonely young Bonnibel Bubblegum. Gumbald talked to his niece about building a candy city. Bonnie not liking the idea, made a butterscotch lake, where Gumbald intended to build the city. After sending Bonnie away, Gumbald along with Bonnibel's other intelligent relative-creations, Lolly, and Chicle were discussing a plan to overthrow her and build a candy city. He formulated a "happy juice" that would make Bubblegum more docile and simple-minded. Gumbald tricked Lolly and Chicle into eating happy juice-induced cupcakes turning them into Manfried and Crunchy, forgetting their previous selves. Bonnibel caught this. Gumbald voiced that Bonnie tried to keep him in line but stated he was her equal as she denounced him as evil. Gumbald tried to make Bonnie have the juice, but t with the help of a peashooter, she shot the beaker with the happy juice while Gumbald was holding it. The happy-juice splashed onto Gumbald's face and turned him into the Punch Bowl and forgetting his previous self.

After Lumpy Space Princess's anti-elemental "lumps", reverted Ooo back to normal from the elemental spell. The Punch Bowl, Manfried, and Crunchy, were reverted back to their previous selves. The trio immediately resumed their plans from 800 years ago, getting revenge on their niece, and building the city. Th The city first appeared in "Gumbaldia", in which the name was revealed as Gumbaldia. It is based around a temple that Finn and Fern visited in "Three Buckets", which later revealed to be occupied by Gumbald.

Gumbaldia, is based around the renovated temple, and has it's own military of Candy People made by Gumbald. It is city made of candy and shares many similarities with the Candy Kingdom. Princess Bubblegum was declaring war on Gumbaldia, but Finn and Jake went to confront Gumbald, with hopes of calling off the war. After seemingly making peace, Gumbald, Lolly, and Chicle splashed Finn and Jake with some sort of liquid, but were told to give Bubblegum "a big hug." Princess Bubblegum was thrilled with peace treaty, but disliked the smell of Finn and Jake. Peppermint Butler wiped off the liquid, and was transformed into a stupid, baby-like peppermint. After this Princess Bubblegum realized that Finn and Jake were splashed with Gumbald's DumDum Juice, with hopes of transforming her. Following this, Princess Bubblegum once again declared war on Gumbaldia.