Fionna design2
Name Fionna
Sex Female
Age 14
Species Human
Occupation Heroine
Relatives Cake (Adoptive sister)
Introduced in Animated short
Voiced by Madeleine Martin

Fionna (full title: Fionna the Human, known as Fionna Mertens in the Farmworld timeline and formerly as Fiona in the original short) is the main protagonist of the series Adventure Time.


While usually appearing as black dots, her eyes are seen as blue when enlarged. She wears a rabbit-themed hat with exposed locks of blonde hair and also has teeth missing in a similar fashion to Finn. Unlike Finn, her neck and blonde hair are shown. When she is not wearing her hat, her hair goes down to between her knees and ankles. Her outfit includes a teal blue shirt with elbow-length sleeves, a dark blue skirt, and knee-high socks with two thin, light blue horizontal stripes at the top. Fionna is a heavier set than Finn (which Natasha referred to as "chubby cute"). She has a green backpack and Mary Jane shoes.

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