the most strongest amazonian giantess in pride island and in the red timber woods, she is the older sister of finn, she and her brother grew up in the red woods, she's childhood friends with Wendy Corduroy, two of the were the strongest kids in red woods, as they grew older, wendy had moved to the other side of the island to train to be a brawler for her own tribe.

her brothers finn and jake moved out, leaving fiona to train her body and strength to become so strong to withstand any enemy threats.

she comes in contact with alejandro, she enjoyed hanging out and sparring with him. pretty soon she would start to date him, and they would become a couple.

fiona loves alejandro so much, she would protect him from anyone who would hurt him, she mostly loves having her barefeet rubbed and massaged by alejandro and enjoys stomping and trampling on him.

she carries swords by her side and swings her sword against tough opponents.
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Fiona © Adventure Time