| Fionna Campbell | |
|---|---|
| Adventure Time character | |
 Fionna, as seen in Adventure Time: Fionna and Cake | |
| First appearance |
|
| Created by | Natasha Allegri |
| Based on | Finn the Human |
| Voiced by | Madeleine Martin |
| In-universe information | |
| Nickname | Fionna the Human |
| Species | Human |
| Gender | Female |
Fionna Campbell, also called Fionna the Human, is a fictional character from the Adventure Time franchise. She was first introduced in the Adventure Time episode "Fionna and Cake" as a genderbent version of the show's lead character Finn the Human. She is the protagonist of the Max series Adventure Time: Fionna and Cake. The character is voiced by American actress Madeleine Martin.