Flame Princess

Flame Princess (first name Phoebe and occasionally called FP) is the princess and ruler of the Fire Kingdom, as well as Finn's former love interest. She is the second most recurring princess after Princess Bubblegum. When Jake asks Flambo if he knows any princesses that are Finn's age so he can fix his broken heart, he introduces Jake to Flame Princess.

Flame Princess is a fire elemental and royalty within the Fire Kingdom, she is described as evil by her father Flame King and was locked in a lantern for much of her life. When Flame Princess was born she was too powerful and chaotic, and despite her innocence her father was fearful of her potential so ordered she be removed from his kingdom and left in the wilds of a forest to survive on her own

Flame Princess is the princess, (now queen), of the Fire Kingdom and was the former love interest of Finn. When Jake asks Flambo if he knows any princesses Finn's age, he responds that he knows "just the skirt... and she's WAY hot." Flame Princess is locked in a lamp in the main chamber of the Fire Palace when Jake first encounters her, so she merely spectates during most of Jake's visit. Flame Princess's role as a character is defined predominantly by her relationship with Finn, until they broke up in "Frost and Fire."

Designs and costumes.

Flame Princess (first name Phoebe[1] and occasionally called FP) is the current ruler of the Fire Kingdom as well as Finn's ex-girlfriend. When Jake asks Flambo if he knows any princesses that are Finn's age so he can fix his broken heart, he introduces Jake to Flame Princess.