Tree Trunks

Tree Trunks is a yellow-green pygmy elephant who is a friend of Finn and Jake. She speaks with a gentle, Southern drawl and lives outside the Candy Kingdom, where she maintains an apple orchard.

Biography
In "Ring of Fire," a lot of information on Tree Trunks' past is revealed. It is revealed that she is from Tiny Mammal Kingdom. After graduating from high school she had plans of adventure, but her high school sweetheart, Randy, proposed to her. The two had a small wedding at a local courthouse. But right before they were going to leave for their honeymoon, Tree Trunks left Randy and went away to sea.

At sea, Tree Trunks became the captain of a pirate ship named La Femme du la Mer. She lost one of her eyes at some point, and covers it with an eyepatch. One day the ship came across an attractive boar named Danny and his disadvantaged "brother" Peanut, who claimed to have survived a shipwreck. Tree Trunks decided to leave the ship and be with Danny, and they quickly married on a nearby island. However, that night Tree Trunks found out that Peanut was a dummy and his sob story was completely fabricated, and realized that Danny had only married her with intentions of getting her away from the pirate ship so that Mr. Faidutti could take charge. So she divorced Danny and marooned him on the island. She blew up her old ship, presumably killing Mr. Faidutti.

With all of her treasure Tree Trunks became the owner of a shipping company, which may have had ties with MO Co. She begins wearing a glass eye. She had a secretary named Wyatt. She fell in love with him, and the two eventually married. Following their marriage, Tree Trunks sold the shipping company and gave all the money to the King of Ooo. Unlike her previous husbands whom she married within a short amount of time, she took time to know Wyatt. The two had a big wedding and were married for a long time. They moved into a house in an apple orchard.

In "Joshua and Margaret Investigations", Tree Trunks reported to Joshua and Margaret that a monster was stealing her apple pies. The monster turned out to be Wyatt, wearing snow shoes to disguise his footprints so he could steal the pies. In "Ring of Fire", Tree Trunks also reprimanded Wyatt for eating too much pie. His demanding appetite for pies led to the eventual deterioration of their marriage, and they ended up divorcing. According to Wyatt in "Apple Wedding", they divorced because he was stifling her spirit.

In "High Strangeness", it is revealed that Tree Trunks at some point entered a relationship with one or more aliens. They had five hybrid children together, who lived in space with the aliens.

By the time the show takes place, Tree Trunks is living on her own in the apple orchard. She is first seen in the Adventure Time opening sequence in the Candy Kingdom. She is officially introduced in "Slumber Party Panic" and "Evicted!" but only has very minor appearances.

Her first major appearance is the self-titled episode "Tree Trunks." After taking a bite out of the Crystal Gem Apple, she appears to mysteriously explode but is later seen laughing and walking happily. It is later revealed in "Crystals Have Power" that she had become the insane overlord of the Crystal Dimension and renamed herself Quartzion the Crystal Queen. She tries to make Finn rule with her, but Finn and Jake rescue her from her insanity by making her spit out the Crystal Gem Apple.

Tree Trunks is then later seen in "Apple Thief" when she assumes some ne'er-do-wells stole her apples, and it's up to Finn, Jake, and Tree Trunks herself to solve the mystery. This leads them on a wild goose chase around the Candy Kingdom's diamond black market. They rescue Mr. Pig from Jaybird and his gang, and he helps her discover that her apples were being stolen by birds and dropped down into her own wardrobe through a hole in the roof. Since Mr. Pig is homeless, he stays living with Tree Trunks. In "Dream of Love," Tree Trunks enters a romantic relationship with Mr. Pig. They are seen spending time together in episodes like "Holly Jolly Secrets Part II" and "Love Games". In "Apple Wedding", the two plan to get married by the King of Ooo. Their wedding is crashed by Princess Bubblegum in her attempts to find a reason to send the King of Ooo to jail. Princess Bubblegum ends up incarcerating all the attendees of the wedding. Tree Trunks and Mr. Pig get married in the jail cell, and Princess Bubblegum finds this so touching that she lets them all go.

In "Mystery Dungeon", Tree Trunks is forced to team up with Neptr, Shelby, and the Earl of Lemongrab to defeat the dungeon holding the Ancient Sleeping Magi of Life Giving so that Ice King can attempt to bring his Fionna and Cake Omnibus to life. Ice King's plan fails.

By "Escape from the Citadel", Tree Trunks has begun to grow tired of marriage again. She begins to suggest she and Mr. Pig get a "di—" when the doorbell rings. They open the door to find The Lich, now a giant baby, and Tree Trunks joyfully exclaims that this "changes everything." They name the baby "Sweet Pig-Trunks", or "Sweet P" for short, and adopt him as their own child.

In "Summer Showers" she has the part of Miranda Hobson in Lumpy Space Princess's play until she tells Mr. Pig that there is a kissing scene, which he is not happy about, so she loses the part.

In "High Strangeness", Tree Trunks joins the Veritas Brigade after she accuses Princess Bubblegum of being a fascist for accidentally firing rockets into her alien husband's spaceship. The rockets contained candy probes which were harming her hybrid children. Tree Trunks forgives Princess Bubblegum after she realizes her mistake, saying that while they will never be friends, they "can respect each other as mothers, and as fellow believers in the infinite promise of the cosmos above."

Tree Trunks is transformed into a candy version of herself during the events of "Elements", traumatising Sweet P, who is immune to the effects of the elemental spell. Like the rest of Ooo, she is cured by Lumpy Space Princess' anti-elemental power.