There are so many Adventure Time characters, that we had to divide them all up into eight sections.
- Main Characters Click to Expand Finn, Jake, Princess Bubblegum, Lady Rainicorn, BMO, Lumpy Space Princess, Marceline the Vampire Queen, Ice King
- Secondary Characters Click to Expand Flame Princess, Earl of Lemongrab, The Grass Sword/Fern, Tree Trunks, Sweet P, Gunter, Peppermint Butler, Cinnamon Bun, Huntress Wizard, The Snail, Shelby, NEPTR, Billy, Martin Mertens, Betty Grof
- Antagonists and Enemies Click to Expand The Lich, King Worm, Ricardio, Magic Man, Hunson Abadeer, Scorcher, Ash, Me-Mow, Kee-Oth, Goliad, Oozers, Big Destiny, Maja, Bella Noche, King of Ooo, GOLB, Darren the Ancient Sleeper, Rats, AMO, Dr. Gross, The Vampire King, The Empress, The Fool, The Hierophant, The Moon, Gumbald
- Minor Characters Click to Expand Starchie, Mr. Cupcake, Manfried, Banana Guards, Gumball Guardians, Royal Tart Toter, Stormo, Princess Cookie, Braco, Root Beer Guy, Cherry Cream Soda, Rattleballs, James, Colonel Candy Corn, Crunchy, Neddy, Lemongrab 2, Lemonjon, Lemon Children, Lemonhope, Flambo, Flame King, Slime Princess, Blagertha, Breakfast Princess, Strudel Princess, The Duke of Nuts, The Duchess of Nuts, Grandmaster Wizard, Abracadaniel, Ron James, The Ancient Sleeping Magi of Life Giving, The Secret Society, Turtle Princess, Ghost/Warrior Princess, Wildberry Princess, Hot Dog Princess, Desert Princess, Old Lady Princess, Jake Jr., T.V., Kim Kil Whan, Viola, Charlie, Bronwyn, Joshua and Margaret, Jermaine, Mr. Pig, Kent, Tiffany, Choose Goose, Banana Man, Ancient Psychic Tandem War Elephant, Moe, Canyon, Breezy the Bee, Shoko, Urgence Evergreen, Gunther, Patience St. Pim, People of the Islands, Marceline's Mother, Jo, Susan Strong, Alva, Frieda, Minerva Campbell, Prismo, The Cosmic Owl, Abraham Lincoln, Grob Gob Glob Grod, Death, Life, The Catalyst Comet, The Multiverse, Cuber, Farmworld Finn/Ice Finn, The Shape-shifter/Warren Ampersand, Space Moth, Martin 2, Morty Rogers, James Baxter, Island Lady, The Water Nymphs, Johnnie, Phlannel Boxingday, Peace Master, Chips and Ice Cream, Blank-Eyed Girls, Penelope, Gata
- Fionna and Cake Characters Click to Expand Fionna, Cake, Prince Gumball, Marshall Lee, Lumpy Space Prince, Lord Monochromicorn, Ice Queen, Ice King, Gunter, Lady Lemongrabs, Dr. Prince, BMO, Flame Prince, Mr. Stumps, Butterscotch Butler, Turtle Prince, Flynn The Human Being, Jacques The Raccoon, Ice President, Lynn the Person, Janet the Fox