You Will Need The Following Items
Fionna the Human is the fearless, gender-swapped counterpart of Finn from Adventure Time. Brave, adventurous, and full of heart, Fionna takes on the Land of Aaa with her trusty sword, best friend Cake the Cat, and boundless energy. Whether she’s battling monsters or exploring magical realms, she proves that courage and kindness make the perfect combination.
Additional tips
Group Costume Ideas
🗡️ Adventure Time Theme
Fionna the Human: Bunny hat, blue outfit, and sword-ready confidence.
Cake the Cat: Fuzzy white cat suit with tan patches.
Marshall Lee: Green flannel, fangs, and vampire flair.
Prince Gumball: Pink outfit with royal accessories.
Ice Queen: Blue gown, crown, and frosty energy.
🌈 Cartoon Heroes Theme
Fionna the Human (Adventure Time)
Star Butterfly (Star vs. The Forces of Evil): Pink dress, devil horns, and magic wand.
Kim Possible: Cargo pants, crop top, and spy gadgets.
Luz Noceda (The Owl House): Hoodie and adventurous attitude.
Dora the Explorer: Purple backpack and endless optimism.
Hair & Makeup
Hair: Long blonde wig with side-swept bangs, or natural blonde hair styled simply.
Makeup: Keep it light and cheerful — soft blush, natural eyes, and a hint of pink lip gloss. Fionna’s charm is in her youthful glow.
Personality & Pose
Fionna’s energy is pure optimism — she’s heroic, loyal, and never backs down from a challenge.
Pose: One hand on the hip, the other holding an imaginary sword high.
Expression: Big smile or determined grin.
Attitude: Fearless, friendly, and a little goofy — Fionna always leads with heart.
Tagline Ideas
“Who needs a prince when you have a sword?”
“Cake, let’s get this adventure started!”
“Adventure time is all the time!”
